Eastern Mojave Vegetation	Field Notes (Continued)
	Tom Schweich

Topics in this Article:
1800s
1900s
1910s
1920s
1930s
1940s
1950s
1960s
1970s
1980s
1990
1991
1992
1993
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2008 Tour de Swertia albomarginata
Mono Lake, August 2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
Contents
Literature Cited

When I first read the field notes of Annie Alexander and Louise Kellogg, I was fascinated by the descriptions they wrote about the places they went and the plants and animals they found there. By publishing my field notes on the Internet I hope to follow a little bit in their tradition.

2025

January, 2025

Other articles:
• Golden Checklist Flora: Cottonwood Open Space;
• Welch Ditch: near boundary;

Locations: Cottonwood Natural Area.
View to southeast from Welch Ditch across Cottonwood Natural Area.

Thursday, 2 January 2025

Walked the Cottonwood Natural Area with several residents and members of Stewards of Golden Open Space.

View to the north across Cottonwood Natural Area.

View to the southeast, high school at left, surge pond in center, Lookout Mountain Youth Services at right.

Berries of a Lycium, either L. barbarum or L. chinense, in Kinney Run.

View to the south across the Cottonwood Natural Area.

Golden High School as seen from the end of the social trail through Cottonwood Natural Area.

Literature Cited:
- Sovell, John R., and Susan S. Panjabi, 2021.

Other articles:
• Kinney Run Trail: at end; near bridge; n. end of o. s.; along rck wall; at intersection;

Locations: Kinney Run South.

Friday, 3 January 2025

Kinney Run South

Continuation of Kinney Run Trail at the end of Tripp Drive.	Just the north side of the bridge.	Along the trail.	Coarse sediments over fine.	Winter scene in Kinney Run South.
Discarded desk chair in Kinney Run South.	Discarded bicycle in Kinney Run South open space.	Method of connecting a barbed-sire fence to the cliff.	View north through Golden Valley.	View south through Kinney Run South.

Other articles:
• Magpie Gulch Trail: at mtn bike trl;

Locations: New Loveland Mine Park.
The first few bicycle tracks visible on Monday, 3 February 2025

Monday, 3 February 2025

Other articles:
• Magpie Gulch Trail: at mtn bike trl;
• Field Notes: 19 Dec 2024; 23 Mar 2025;

Locations: New Loveland Mine Park.
Bicycle tracks on Wednesday, 5 February 2025

Wednesday, 5 February 2025

I made Fix-It report #32913

Planted the following seeds:

Asclepias incarnata
Arnica fugens
Helianthus pauciflora subrhomboidea
Senecio integerrimus
Erysimum capitatum
Astragalus drummondii
Monarda pectinata
Mentzelia muda
Leptodactylon pungens
Ipomopsis aggregata
Eriogonum effusum
Sphaeralcea coccinea
Mirabilis multiflora
Penstemon secundiflorus
Penstemon virens
Penstemon virgatus
Achnatherum hymenoides
Sporobolus cryptandrus

Thursday, 6 February 2025

Fix-It report 32943.

Someone has been riding their mountain bikes through the park and surrounding open space (creating new "social trails"). I think some simple signage, filling the hole, and blocking their current paths with simple "do not enter" held by a couple of wooden stakes tape would hopefully discourage further destruction of our park and open space.

Other articles:
• Magpie Gulch Trail: at mtn bike trl; at mtn bike trl;

Locations: New Loveland Mine Park.
Digging and piling up of dirt.

Friday, 7 February 2025

Mountain bike jump and trails in New Loveland Mine Park.

Fix-It Report #32971.

Someone has been riding their mountain bikes through the park and surrounding open space (creating new "social trails"). I think some simple signage, filling the hole, and blocking their current paths with simple "do not enter" held by a couple of wooden stakes tape would hopefully discourage further destruction of our park and open space.

The response on Fix-It was:

Thank you for your report. Two previous reports about this trail were already submitted to FixIt! so staff are aware. Staff will be adding signage to that entire area identifying it a s sensitive area and asking to people to stay out. The signs will be located in way that would deter use of this specific trail. It is likely that additional steps may be required but are working to get the signs in place ASAP. Specific to the jump, this afternoon staff worked to remove or replace the material. ~ Parks Staff

Downhill runout from mountain bike jump.

Mountain bike jump.

Mountain bike trails in New Loveland Mine Park.

Other articles:
• Field Notes: 19 Dec 2024; 5 Feb 2025;

Locations: New Loveland Mine Park.
Backhoe tracks through the natural area of New Loveland Mine Park.

Sunday, 23 March 2025

Filed Fix-It Report #33832

On Friday, March 21, 2025, a contractor installed the footings for public art in New Loveland Mine Park. While on my way to the Community Center, I observed them setting up, and then working on the footing for the northerly art piece, and observed them again later in the morning digging out the hole for the footing. It was pretty clear they had run their little backhoe down the concrete trail. Unfortunately, after digging out the southerly footing, the contractor used the social trail to return their backhoe to the parking lot. This is evident in the attached photo as there are two new tracks that span the social trail. The damaged width in the natural area of New Loveland Mine Park is now at least 8 feet wide. This is not the first time a piece of equipment has been driven up the social trail. See Fix-It Report #32059, in which one of our own Stormwater guys drove a Skid-Steer up the the same trail. I had understood in your response to Fix-It reports #32913, #32943, and #32971, that there would be some signage placed around the natural area that "identifying it as sensitive area and asking to people to stay out. The signs will be located in way that would deter use of this specific trail. It is likely that additional steps may be required but are working to get the signs in place ASAP." So far there is no signage, and no other obvious attempt to protect the natural area from unnecessary damage. Since the city's contractors dug a pretty big hole and placed forms around it, I assume that concrete will be poured into the holes. Please direct the contractor not to drive a cement truck through the natural area.

Other articles:
• Magpie Gulch Trail: social train down;

Locations: New Loveland Mine Park.
Rehabilitation of the social trail through New Loveland Mine Park.

Saturday, 29 March 2025

Walk through New Loveland Mine Park.

Signage at the mountain bike trail.

Other articles:
• Magpie Gulch Trail: at mtn bike trl; social trail Cyn Vw Dr;

Locations: New Loveland Mine Park.
Signage at south end of closed social trail.

Sunday, 30 March 2025

Signage at lower end of mountain bike trail.

Other articles:
• Interstate 70: 132610;

Locations: Green River.
View from Tamarisk Restaurant in Green River.

Monday, 31 March 2025

Golden, CO, to Richfield, UT

Other articles:
• Interstate 70: Richfield;

Locations: Richfield.
Five inches of snow overnight in Richfield, Utah.

Tuesday, 1 April 2025

Richfield, UT, to Pahrump, NV

Other articles:
• U. S. Highway 91: n. slope; 404700; at Mojave Desert Joshua Tree Rd;
View south on Old Highway 91 to Littlefield, Arizona.
View north to the Red Mountains and then the Pine Valley Mountains.

Old Highway 91

View south towards the pass through the Beaver Dam Mountains.

Joshua tree along Old Highway 91.

Other articles:
• Scenic Loop Drive: at visitor ctr; at Calico I; along road; at o'look;

Locations: Red Rock Canyon National Conservation Area.
View from the Visitor Center.

Red Rock Canyon

Cross-bedded sandstone at Calico I.	Blackbrush along the road.	Calico Basin seen from High Point Overlook.	“Mohave Yucca” — Yucca schidigera K. E. Ortiges in bloom at the High Point Overlook.	View south from High Point Overlook
Looking towards Red Rock Canyon from the High Point Overlook.

Other articles:
• Bell Vista Road: somewhere;
Red stems from last year's Eriogonum inflatum.

Wednesday, 2 April 2025

Pahrump, NV, to Bakersfield, CA.

Just out of Pahrump we drove west and through some small unnamed hills.

Other articles:
• California Highway 127: at Death Valley Junction;
• CA Hwy 190: Towne Pass; at sea level; at Zabriskie Point; at Gower Gulch;
• Dantes View Road: near top; at Dantes View;
• Furnace Creek Wash Road: at Billie Mine; 12000;
• Panamint Valley Road: near CA 190;
• Trona Wildrose Road: at Panamint Valley Road; at Pass;

Locations: Billie Mine. Dante's View. Death Valley. Death Valley Junction. Panamint Valley. Ryan. Towne Pass. Zabriskie Point.
The Amargosa Opera House at Death Valley Junction (2025).

Death Valley

Roads in Death Valley Junction.	Last part of the road to Dante's View.	Floor of Death Valley from Dante's View (2025).	Panamint Mountains across Death Valley (2025).	Billie Mine across Furnace Creek Wash.
Ryan.	Manley Beacon from Zabriskie Point.	Diversion of Furnace Creek Wash into Gower Gulch.	Sea Level.	Tucki Mountain from the Sea Level sign.
View south towards Furnace Creek from the Sea Level sign.	Towne Pass, elevation 4956 feet.	Landscape beside the road at Towne Pass.	Looking back across Panamint Valley in the direction of Towne Pass.	Telescope Peak from the floor of Panamint Valley.
Panamint Valley and Panamint Range (2025).

Other articles:
• Trona Road: Trona;

Locations: Trona.
Chemical plant in Trona.

Trona

Chemical plant in Trona.

Other articles:
• CA Hwy 178: just below Walker Pass;

Locations: Walker Pass.
Leptosyne bigelovii (A. Gray) A. Gray “Bigelow's tickseed” beside Highway 178.

Walker Pass

Woolgrowers Restaurant

Thursday, 3 April 2025

Bakersfield, CA, to San Luis Obispo, CA

Other articles:
• California Highway 33: s. edge McKittrick; out there somewhere;

Locations: McKittrick.
Oil fields between McKittrick and Taft.

Lost between McKittrick and Taft.

South side of McKittrick.

Carrizo Plain

Other articles:
• Shell Creek Road: n. of Shell Ck; at Shell Creek tree; along road;

Locations: Shell Creek.
The oak tree at Shell Creek, April 2025.

Shell Creek

North on Shell Creek Road, April 2025.	South on Shell Creek Road, April 2025.	Castilleja exserta (A.Heller) T.I.Chuang & Heckard “Purple Owl's-clover” along Shell Creek Road.	A field of Goldfields.	North on Shell Creek Road.
Baby Blue Eyes, Goldfields, and Tidy-Tips.

Other articles:
• Avila Beach Drive: at Avila Beach;

Locations: Port San Luis. San Luis Obispo Bay.
California Thrasher.

Friday, 4 April 2025

San Luis Obispo to Avila Beach, CA

Sea otter and baby by the Port San Luis Pier.

Sunset at San Luis Obispo Bay.

San Luis Obispo Bay in the morning.

Other articles:
• Halcyon Road: 15000;

Locations: Arroyo Grande Cemetery.
Headstone for Pat and Tom Rafferty.

Saturday, 5 April 2025

Avila Beach, CA

Headstone for Grammy & Grampy Halter

Headstone for Frank W. Halter

Headstone for Beverley Jane Halter.

Headstone for Lloyd Wilson Halter.

Other articles:
• Bishop Street: at Terrace Hill;

Locations: San Luis Obispo. Terrace Hill.
View west of San Luis Obispo from Terrace Hill.

Sunday, 6 April 2025

Avila Beach, San Luis Obispo, and Cambria, CA

Site of the former roundhouse at San Luis Obispo.

Interpretive panel for Terrace Hill.

View northeast from Terrace Hill.

Trail map for Terrace Hill.

City of San Luis Obispo, Open Space Rules.

Other articles:
• Santa Barbara Avenue: at rr mus.;
Pacific Coast Railway Boxcar #1200 Group
Pacific Coast Railway boxcar.

San Luis Obispo Railroad Museum

Arch bar trucks of the older boxcar.

California, San Luis Obispo County, California, San Luis Obispo County, San Luis Obispo Railroad Museum

Other articles:
• Windsor Boulevard: at Fiscalini Rch Pres;

Locations: Fiscalini Ranch Preserve.
View north along the cliffs from Fiscalini Ranch Preserve.

Fiscalini Ranch Preserve Bluff Trail

Taraxia ovata (Nutt. ex Torr. & A. Gray) Small in the Fiscalini Ranch Preserve.

Skunk doing some daytime hunting.

Other articles:
• Interstate 15: at Zzyzx Road;

Locations: Zzyzx.
The Zzyzx Road exit from Interstate 15.

Monday, 7 April 2025

Avila Beach, CA, to Las Vegas, NV

Other articles:
• Interstate 70: at rest area;
View southeast across Utahraptor Ridge to the La Sal Mountains.

Tuesday, 8 April 2025

Las Vegas, NV, to Grand Junction, CO

Wednesday, 9 April 2025

Grand Junction, CO, to Golden, CO

Saturday, 12 April 2025

New Loveland Mine Park

Other articles:
• 6th Avenue Trail: 31500;
• Golden Checklist Flora: Parfet Prehistoric Preserve;

Locations: Parfet Prehistoric Preserve.
South end of Parfet Prehistoric Preserve.

Wednesday, 30 April 2025

Parfet Prehistoric Preserve

Other articles:
• Golden Checklist Flora: Cerastium arvense strictum;
Cerastium arvense ssp. strictum in New Loveland Mine Park.

Walk through New Loveland Mine Park enroute to Coffee with a Councilor.

Locations: Coliseum Mine.

SMM, The Leading Metals Information Provider. May 6, 2025. https://news.metal.com/newscontent/103312571

DOI Grants Permit for Colossus Rare Earth Project Development
On April 8, the Department of the Interior (DOI) granted Dateline Resources a permit to continue developing the Colossus rare earth project. The project had been long delayed due to its location within the Mojave National Preserve in San Bernardino County. Australian mining company stated that the DOI confirmed their development rights under the Mining Law and the California Desert Protection Act. The DOI's approval has paved the way for the development of the second rare earth mine in the US. Currently, there is only one operational rare earth mine in the US, namely the eponymous rare earth mine of MP Materials, located just 10 kilometers away from the project.

Other articles:
• North and South Platte River Road: at W. Pine Ck. Rd.;
• County Route 96: South Platte;

Locations: South Platte.
Intersection of Pine Creek Road and Platte River Road.

Sunday, 11 May 2025

South Fork of the South Platte River

Recreation Information.

South Platte Hotel.

South Fork (left) and North Fork (right) of the South Platte.

Locations: Parfet Prehistoric Preserve.
Old industrial installation, probably related to the former clay mine.
Fossil Trace Golf Course from Parfet Prehistoric Preserve.

Monday, 12 May 2025

Walk-through of Parfet Prehistoric Preserve.

Old industrial installation, probably related to the former clay mine.

Coll. No. 3385, Agoseris glauca.

Coll. No. 3385, Agoseris parviflora.

3385

Agoseris, probably A. glauca.

Locations: North Table Mountain. North Table Mountain Park.

Friday, 16 May 2025

North Table Mountain.

Literature Cited:
- Beahm, Douglas L., et al., 2023.

Other articles:
• US Highway 191: at B113 Big Indian Rd;

Locations: Velvet Mine.

Utah leaders praise Trump’s fast-tracking of a ‘vital’ uranium mine. Environmentalists say the move ‘beggars belief.’
“There’s no reason permitting can’t be both timely and responsible — and we’re hopeful this project will prove just that," said Gov. Spencer Cox.
By Anastasia Hufham | May 16, 2025, 6:00 a.m. | Salt Lake Tribune
State leaders have nothing but praise for the Trump administration’s decision to significantly shorten the environmental review process of a southeastern Utah uranium project.
Earlier this week, the Department of the Interior announced it was fast-tracking the permitting process for Anfield Energy Inc.’s plans to reopen the Velvet-Wood uranium mine in San Juan County. The environmental assessment for the project must be completed by the Bureau of Land Management in just 14 days — as opposed to the prior timeline of months or years.
“We’re excited to see the Department of the Interior highlight a Utah project as one of the first to benefit from a faster, more efficient permitting process,” said Gov. Spencer Cox in a statement. “For years, we’ve called for commonsense reforms that make it easier to build without sacrificing environmental stewardship. There’s no reason permitting can’t be both timely and responsible — and we’re hopeful this project will prove just that.” freestar
President Donald Trump in January issued an executive order announcing a “national energy emergency,” which was followed by Interior Secretary Doug Burgum’s move to shorten environmental reviews.
The Velvet-Wood mine, near Utah’s Lisbon Valley, will produce both uranium and vanadium. The former can be processed into fuel for nuclear reactors, while the latter is commonly used in steel alloys.
The BLM reports the project will “result in only three acres of new surface disturbance given the underground mining plan and the existing surface disturbance from the old Velvet Mine.” The older mine shut down in the 1980s and produced 400,000 tons of ore between 1979 and 1984, according to Anfield Energy. The company said that the site currently boasts over 5 million pounds of uranium ore to be mined.
“As a past-producing uranium and vanadium mine with a small environmental footprint, Velvet-Wood is well-suited for this accelerated review,” said Anfield Energy CEO Corey Dias. “This marks a major milestone for Anfield as we look to play a meaningful role in rebuilding America’s domestic uranium and vanadium supply chain and reducing reliance on imports from Russia and China.”

“We’re deeply concerned about the use of a bogus ‘emergency’ authority to gut a searching environmental review of a uranium mining project, and are watching this one closely,” said Taylor McKinnon, southwest director for the nonprofit Center for Biological Diversity.
An environmental assessment, according to the BLM, “identifies environmental effects of a proposed action and determines their significance.” These assessments are mandated by the National Environmental Policy Act (NEPA) for certain projects. freestar
“The idea that you can do any NEPA review in 14 days is hard to believe,” said Aaron Weiss, deputy director for the environmental nonprofit Center for Western Priorities.
“The idea that you could do a NEPA review in 14 days for a uranium mine,” he added, “beggars belief.”
A group of 15 states sued the Trump administration last week over his emergency declaration, arguing the president is violating environmental laws by fast-tracking energy projects nationwide.
Sen. John Curtis said in a statement that “the amount of time spent on environmental reviews doesn’t automatically determine their quality or thoroughness. We can streamline permitting without cutting corners or undermining public trust.”
“The Velvet-Wood uranium mine is a vital project — one that will reduce America’s reliance on adversarial nations like Russia for uranium, strengthen our national security and bolster domestic energy production,” Curtis continued. “It will also help advance a cleaner energy future through expanded nuclear power.” freestar
The mine’s reopening comes as Utah’s leaders have increasingly touted nuclear power as a solution to soaring energy demands in the state and nationwide.
Last year, Cox proposed setting aside millions in funding for developing nuclear infrastructure as part of his “Operation Gigawatt.” Lawmakers also passed a sweeping bill aimed at preparing Utah for the construction of small modular reactors, which are still in development.
“Energy development is a national security issue, and I appreciate the Department of the Interior for acting responsibly and expeditiously to address one of the most significant challenges our country is facing,” Utah Senate President Stuart Adams said in a statement about the Velvet-Wood mine’s expedited permitting.
Emy Lesofski, director of the Utah Office of Energy Development, said “our citizens deserve adequate, reliable, affordable and clean energy, and nuclear helps us meet those goals.”
“If the United States is committed to securing its energy independence,” she continued, “the entire nuclear supply chain needs to be seriously considered.”
That supply chain starts with the mining of uranium ore. Then, the mined ore can be transported to a mill, which processes the rock into yellowcake, or “uranium concentrate.” The yellowcake is taken to other facilities for conversion into gas, which further concentrates the uranium, before it is enriched into a powder and compressed into the small pellets that power nuclear reactors.
Utah is home to the last conventional uranium mill in the U.S.: the White Mesa Mill just outside of Blanding, which is owned by Energy Fuels Inc. The company also owns uranium mines in Utah and Arizona.
Curtis Moore, Energy Fuels’ senior vice president of marketing and corporate development, said Anfield Energy has not reached out about processing ore at the mill.
“However, the White Mesa Mill is the only facility in the country able to safely process uranium ore into natural uranium concentrates, the first step in the production of fuel for clean, 24/7/365 nuclear energy,” Moore said. “When the time is right, we would be happy to discuss options for milling their ore to ensure that their operations adhere to the highest safety standards.”
Anfield Energy has plans to open its own mill, also in Utah, called the Shootaring Mill. That mill was built in 1980 and started producing yellowcake in 1982, but closed just six months later due to a sharp decline in the price of uranium.
The Shootaring Mill is not yet accepting or processing ore, Dias said, but Anfield Energy is working with the state to update the mill’s license. The company hopes to begin producing yellowcake there in 2027.

Other articles:
• North Table Mountain Trail: s. of watercourse;
Coll. No. 3386, Senecion integerrimus.
Coll. No. 3386, Senecio integerrimus.

3386

Senecio integerrimus

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado Asteraceae

Senecio integerrimus Nutt. Columbia Ragwort.

North Table Mountain Open Space (City of Golden), Jefferson County, Colorado. Along City of Golden North Table Mountain Trail in the northern part of the open space, very windy northwest slope, 2.35 km. north of the GNIS location of Golden. 39.77639°N, 105.22583°W. WGS 1984 With Artemisia dracunculus, A. ludoviciana, Alysum simplex, Lupinus argenteus, Prunus virginiana and Verbascum thapsus. This parcel was designated a City of Golden Open Space in 2025. Variety exaltatus if infraspecific names are to be applied.

Collected by permit: City of Golden, 2025, issued: Mar 14, 2025, to: Tom Schweich.

Tom Schweich 3386.

16-May-2025

3387

Agoseris parviflora.

Plants of Jefferson County Open Space
Jefferson County, Colorado Asteraceae

Agoseris parviflora (Nutt.) D. Dietr. Steppe Goat-Chicory.

North Table Mountain Park, Jefferson County, Colorado. Short grass prairie on nearly-bare basalt flow, near the corner of North Table Loop at its intersection with Golden Cliffs and Climbing Access Trails, 1.8 km. north of the GNIS location of Golden. 39.77176°N, 105.22096°W. WGS 1984 Elev. 1964 m. Flowers yellow, fading blue-ish. Collected nearby: Astragalus agrestis and Viola nuttallii.

Collected by permit: Jefferson County Open Space, 2025, issued: May 1, 2025, to: Tom Schweich.

Tom Schweich 3387.

16-May-2025

Locations: Tin Cup Ridge.
Balsamorhiza sagitatta “Arrow-leaf Balsamroot” on Tin Cup Ridge.
Penstemon virens at Tin Cup Ridge.

Wednesday, 21 May 2025

Tin Cup Ridge

Balsamorhiza sagitatta on Tin Cup Ridge.

3388

Very small Brassicaceae.

Plants of Jefferson County Open Space
Jefferson County, Colorado Brassicaceae

Thlaspi arvense L. Field Penny Cress.

Tin Cup Ridge, Jefferson County, Colorado. Lowest east-facing slope of a small ridge mapped as South Platte Formation adjacent to the Golden fault, 4.96 km. south southwest of the GNIS location of Golden. 39.7131°N, 105.20297°W. WGS 1984 Elev. 1884 m. Small glabrous annual, leaves sessile sagittate dentate, flowers white, silicle ovoid & notched. With Marubium vulgare, Cercocarpus montanus, and Rumex crispus. Very small examples of this common weed.

Collected by permit: Jefferson County Open Space, 2025, issued: May 1, 2025, to: Tom Schweich.

Tom Schweich 3388.

21-May-2025

3389

Plants of Jefferson County Open Space
Jefferson County, Colorado Boraginaceae

Lappula texana (Scheele) Britton. Flatspine Stickseed.

Tin Cup Ridge, Jefferson County, Colorado. Lowest east-facing slope of a small ridge mapped as South Platte Formation adjacent to the Golden fault, 4.96 km. south southwest of the GNIS location of Golden. 39.7131°N, 105.20298°W. WGS 1984 Elev. 1884 m. Small annual borage, nutlet prickles are joined at the base forming a low ring around the margin. With Thlaspi arvense, Marubium vulgare, Cercocarpus montanus, and Rumex crispus. Coordinates estimated from nearby collections.

Collected by permit: Jefferson County Open Space, 2025, issued: May 1, 2025, to: Tom Schweich.

Tom Schweich 3389.

21-May-2025

Coll. No. 3390 Rhus trilobata var. trilobata.

3390

Rhus trilobata trilobata

Plants of Jefferson County Open Space
Jefferson County, Colorado Anacardiaceae

Rhus trilobata Nutt. var. trilobata. Skunkbush Sumac.

Tin Cup Ridge, Jefferson County, Colorado. Mid-slope east side of Tin Cup Ridge, the northward extension of Dinosaur Ridge into Golden, 5.14 km. south southwest of the GNIS location of Golden. 39.71135°N, 105.20334°W. WGS 1984 Elev. 1905 m. In bloom, leaves juvenile. Coordinates estimated from numerically adjacent collections.

Collected by permit: Jefferson County Open Space, 2025, issued: May 1, 2025, to: Tom Schweich.

Tom Schweich 3390.

21-May-2025

Coll. No. 3391.1, Lappula texana.

3391.1

Lappula occidentalis

Plants of Jefferson County Open Space
Jefferson County, Colorado Boraginaceae

Lappula occidentalis (S. Watson) Greene var. cupulata (A. Gray) Higgins. Crowned Stickseed.

[ = Lappula texana (Scheele) Britton ]

Tin Cup Ridge, Jefferson County, Colorado. Along the top of Tin Cup Ridge, the northward extension of Dinosaur Ridge into Golden, in more open areas adjacent to ponderosa pines, 4.95 km. south of the GNIS location of Golden. 39.7128°N, 105.20487°W. WGS 1984 Elev. 1930 m. Bases of prickles confluent. Bare and sparsely vegetated soil with Pinus scopulorum, Crepis occidentalis, Helianthus pumilus, Gilia sp. and Potentilla recta

Collected by permit: Jefferson County Open Space, 2025, issued: May 1, 2025, to: Tom Schweich.

Tom Schweich 3391.1

21-May-2025

Coll. No. 3391.2, Gilia ophthalmoides.

3391.2

Gilia sp.

Plants of Jefferson County Open Space
Jefferson County, Colorado Polemoniaceae

Gilia ophthalmoides Brand. Pinyon Gilia.

Tin Cup Ridge, Jefferson County, Colorado. Along the top of Tin Cup Ridge, the northward extension of Dinosaur Ridge into Golden, in more open areas adjacent to ponderosa pines, 4.95 km. south of the GNIS location of Golden. 39.7128°N, 105.20487°W. WGS 1984 Elev. 1930 m. Annual, lower stem arachnose, cauline glands black dots, corolla throat yellow, petals abaxial purple, adaxial white. Edge of small grove of ponderosa pines, with Agoseris parviflora, Crepis occidentalis, Heterotheca villosa and Lappula texana (syn: L. occidentalis var. cupulata).

Collected by permit: Jefferson County Open Space, 2025, issued: May 1, 2025, to: Tom Schweich.

Tom Schweich 3391.2

21-May-2025

Coll. No. 3392, Agoseris glauca on Tin Cup Ridge.

Coll. No. 3392, Agoseris parviflora.

3392

Agoseris, likely A. parviflora

Plants of Jefferson County Open Space
Jefferson County, Colorado Asteraceae

Agoseris parviflora (Nutt.) D. Dietr. Steppe Goat-Chicory.

Tin Cup Ridge, Jefferson County, Colorado. Along the top of Tin Cup Ridge, the northward extension of Dinosaur Ridge into Golden, in more open areas adjacent to ponderosa pines, 4.95 km. south of the GNIS location of Golden. 39.71283°N, 105.20482°W. WGS 1984 Elev. 1932 m. Some leaves retrorsely dentate, flowers yellow fading bluish, beak length unknown. Edge of small grove of ponderosa pines, with Crepis occidentalis, Heterotheca villosa, Lappula texana (syn: L. occidentalis var. cupulata), and Gilia ophthalmoides. iNaturalist Observation 283400249.

Collected by permit: Jefferson County Open Space, 2025, issued: May 1, 2025, to: Tom Schweich.

Tom Schweich 3392.

21-May-2025

Coll. No. 3393, Crepis occidentalis ssp. costata on Tin Cup Ridge.

Coll. No. 3393, Crepis occidentalis ssp. costata

3393

Crepis occidentalis

Plants of Jefferson County Open Space
Jefferson County, Colorado Asteraceae

Crepis occidentalis Nutt. ssp. costata (A. Gray) Babcock & Stebbins. Largeflower Hawksbeard.

Tin Cup Ridge, Jefferson County, Colorado. Along the top of Tin Cup Ridge, the northward extension of Dinosaur Ridge into Golden, between rock outcrops and adjacent to ponderosa pines, 4.79 km. south of the GNIS location of Golden. 39.71417°N, 105.20583°W. WGS 1984 Elev. 1932 m. Phyllaries stipitate-glandular with black setae. Previously collected here: Heuchera parvifolia and Phlox multiflora.

Collected by permit: Jefferson County Open Space, 2025, issued: May 1, 2025, to: Tom Schweich.

Tom Schweich 3393.

21-May-2025

Wednesday, 28 May 2025

Golden, CO to Grand Island, NE

Other articles:
• US Highway 34: Yuma;

Locations: Yuma.
Phone booth in Yuma. Is it the last one?

Yuma, Colorado

Eastward on US Highway 34 in Yuma.

Westward on US Highway 34 in Yuma.

Other articles:
• US Highway 34: 28500;
Western boundary of Nebraska on US Highway 34.

Cross into Nebraska.

Other articles:
• Nebraska Highway 27: at state line;
Northern boundary of Kansas, southern boundary of Nebraska.
Info kiosk for Land and Sky Scenic Byway of Kansas.

South into Kansas on Highway 27.

Thursday, 29 May 2025

Grand Island, NE to Alliance, NE

Other articles:
• Nebraska Highway 22: in Scotia;

Locations: Scotia.
Interesting buildings in Scotia.

Scotia, Nebraska

Interesting buildings in Scotia.

Former church in Scotia.

Other articles:
• Nebraska Highway 11: at North Loup; near N. Loup;

Locations: North Loup.
Grain bins in North Loup.

North Loup

North Loup Popcorn Days.

Other articles:
• Glossary: demulcent;
• Nebraska Highway 11: at Elyria;

Locations: Fort Hartsuff.
Sign for Fort Hartsuff State Historical Park.

Fort Hartsuff State Historical Park

Commandant's House at Fort Hartsuff.

Package of Mullein in the Pharmacy at Fort Hartsuff.

More of the pharmacy at Fort Hartsuff.

Other articles:
• Nebraska Highway 91: bet. Dunning & Brewster;
Countryside between Brewster and Dunning, Nebraska.

Between Brewster and Dunning

Other articles:
• Nebraska Highway 2: 41120;

Locations: Seneca.
Post Office, Seneca, Nebraska

Seneca

City Jail, Seneca, NE

Two houses in Seneca, Nebraska.

Other articles:
• Nebraska Highway 2: at Gaston;

Locations: Middle Loup.
Westbound empty coal trail in the BNSF Sand Hills Subdivision.

Gaston Road, into the west side of the Nebraska National Forest.

Upstream view of the Middle Loup River.

Downstream view of Middle Loup River.

Rumex venosus by the Middle Loup River.

Other articles:
• Nebraska Highway 2: at fairgrounds;
Hyannis, NE, across Beem Lake.
Grant County Fairgrounds, near Hyannis, NE.

Stopped at the Grant County Fairgrounds near Hyannis.

Ranch across the highway from the fairgrounds.

Friday, 30 May 2025

Alliance, NE to Golden, CO

Other articles:
• 5 Rocks Road: at Country Club Rd;

Locations: Scotts Bluff.
Scotts Bluff from Country Club Drive.

We turned up Country Club Drive for a photo, much to the disgust of local residents.

Other articles:
• Old Oregon Trail: 70000;
Wagon display at Scotts Bluff National Monument.
Six ox-power military freight wagon.

Scotts Bluff National Monument.

View south of bluff.

Other articles:
• Old Oregon Trail: 70000;
View west from top of Scotts Bluff.

View from the top of Scotts Bluff

Other articles:
• Nebraska Highway 71: 69940;
Pumpkin Creek drainage, Banner County.

Other articles:
• State Highway 71: at NE 71;
• Nebraska Highway 71: at CO 71;
Welcome to Nebraska
Welcome to Colorful Colorado.

Other articles:
• U. S. Highway 6: at pkg;

Locations: Parfet Open Space (City of Golden).
Parasailer on final approach.

June, 2025

Sunday, 1 June 2025

Parfet Open Space.

Leaves of winter fat — Krascheninnikovia lanata.

Winter fat (Krascheninnikovia lanata) in Parfet Open Space.

Parasailer lands in Parfet Open Space.

3394

~~Senecio integerrimus~~ Ha!

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado Asteraceae

Arnica fulgens Pursh. Shining Leopardbane.

Parfet Open Space (City of Golden), Jefferson County, Colorado. Edge of the parasailer landing field along US Highway 6, below the Welch Ditch, near the northeast boundary of the open space, disturbed mixed-grass prairie, 930 m. southwest of the GNIS location of Golden. 39.75002°N, 105.22929°W. WGS 1984 Elev. 1766 m. Most plants in seed, a few still in flower, late in flower season for this plant. Also collected here: Juncus arcticus var. balticus. This parcel was designated a City of Golden Open Space in 2025.

Collected by permit: City of Golden, 2025, issued: Mar 14, 2025, to: Tom Schweich.

Tom Schweich 3394.

1-Jun-2025

This is the third unusual thing I have found in Parfet Open Space. The other two are Symphyotrichum fendleri and Kraschinnikovia lanata.

3395

Juncus, probably J. arcticus var. balticus.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado Juncaceae

Juncus arcticus (Willd.) Trautv. var. balticus (Willdenow) Trautvetter. Arctic Rush.

Parfet Open Space (City of Golden), Jefferson County, Colorado. Edge of the parasailer landing field along US Highway 6, below the Welch Ditch, near the northeast boundary of the open space, disturbed mixed-grass prairie, 930 m. southwest of the GNIS location of Golden. 39.74998°N, 105.22959°W. WGS 1984 Elev. 1766 m. Also collected here: Arnica fulgens. This parcel was designated a City of Golden Open Space in 2025.

Collected by permit: City of Golden, 2025, issued: Mar 14, 2025, to: Tom Schweich.

Tom Schweich 3395.

1-Jun-2025

Coll. No. 3396, Oenothera howardii.

3396

Oenothera howardii.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado Onagraceae

Oenothera howardii (A. Nels.) W. L. Wagner. Howard's Evening Primrose.

Parfet Open Space (City of Golden), Jefferson County, Colorado. West central part of the open space, above the Welch Ditch, above the social trail and getting close to the houses, 1.06 km. southwest of the GNIS location of Golden. 39.74894°N, 105.23011°W. WGS 1984 Elev. 1789 m. Flowers bright yellow, fading bronze. Mixed-grass prairie, with Ericameria nauseosa var. nauseosa, Gutierrezia sarothrae, Kraschinnikovia lanata, Allium textile, Andropogon gerardii, and Bouteloua curtipendula. This parcel was designated a City of Golden Open Space in 2025.

Collected by permit: City of Golden, 2025, issued: Mar 14, 2025, to: Tom Schweich.

Tom Schweich 3396.

1-Jun-2025

Coll. No. 3397, Hybanthus verticillatus.

3397

Hybanthus verticillatus.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado Violaceae

Hybanthus verticillatus (Ortega) Baill. Baby Slippers.

Parfet Open Space (City of Golden), Jefferson County, Colorado. East central portion of the open space, on the southwest end of a small ridge that appears to part of the pre-development topography, 970 m. southwest of the GNIS location of Golden. 39.74909°N, 105.22874°W. WGS 1984 Elev. 1796 M. Also seen or collected on this ridge: Artemisia campestris, Grindelia subalpina, Townsendia grandiflora, Xanthisma spinulosum, Mentzelia nuda, and Mirabilis linearis. This parcel was designated a City of Golden Open Space in 2025.

Collected by permit: City of Golden, 2025, issued: Mar 14, 2025, to: Tom Schweich.

Tom Schweich 3397.

1-Jun-2025

Other articles:
• North Table Loop: above social trail;
• North Table Mountain Trail: at watercourse;

Locations: North Table Mountain. North Table Mountain Park.
Watercourse with dense vegetation in the City of Golden North Table Mountain Open Space.

Sunday, 8 June 2025

Colorado Native Plant Society field trip to North Table Mountain.

Orobanche fasciculata on top of the mesa.

Head of landslide(?)

Other articles:
• North Table Loop: near Golden Cliffs Trl;
Rosa acicularis ssp. sayi on North Table Mountain.
Coll. No. 3398, Rosa acicularis ssp. sayi.

3398

Rosa acicularis ssp. sayi.

Plants of Jefferson County Open Space
Jefferson County, Colorado Rosaceae

Rosa acicularis Lindl. ssp. sayi (Schwein.) W. H. Lewis. Say's Acicular Rose.

North Table Mountain Park, Jefferson County, Colorado. In the bed of partially filled-in small reservoir, along the North Table Mountain Loop trail, about 140 m. east of its junction with the Golden Cliffs Trail, 815 m. south of Lichen Peak, and 1.78 km. north of the GNIS location of Golden. 39.77128°N, 105.21975°W. WGS 1984 Elev. 1954 m. Many fine, long prickles on new growth, 7 leaflets per leaf. Wet soil, with Artemisia ludoviciana, Senecio integerrimus, Lupinus argenteus, and Poa compressa. Coordinates estimated with GoogleEarth.

Collected by permit: Jefferson County Open Space, 2025, issued: May 1, 2025, to: Tom Schweich.

Tom Schweich, with Carol Cameron, Susan Gaines, Danielle Lehle, and Anna Wilson 3398.

1-Jun-2025

Locations: DeLong Park (City of Golden).

Tuesday, 10 June 2025

Weeding at DeLong Park.

Coll. No. 3399, Sonchus asper.

3399

Sonchus, maybe S. arvensis.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado Asteraceae

Sonchus asper (L.) Hill. Spiny Sowthistle.

DeLong Park (City of Golden), Jefferson County, Colorado. Northeast corner of the park, near 23rd Street. 39.749°N, 105.208°W. WGS 1984 Elev. 1763 m. Also here: Ambrosia psilostachya, Lepidium draba, Trifolium repens, Agropyron cristatum, Cenchrus longispinus, and Dactylis glomerata. DeLong Park was a private residence that was left fallow for a number of years, then converted to a city park in 2021-2022.

Collected by permit: City of Golden, 2025, issued: Mar 14, 2025, to: Tom Schweich.

Tom Schweich 3399.

10-Jun-2025

Locations: Ranson/Edwards Homestead Open Space Park.

Wednesday, 11 June 2025

Searching for Crassula aquatica at Ranson/Edwards.

Locations: Clear Creek Canyon Park.

Thursday, 12 June 2025

Wildflower walk for Golden Community Center Front Porch.

Other articles:
• Forest Road 211: at view point; at N Twin Ck; at Molly Gulch;

Locations: Molly Gulch. North Twin Creek. Twin Creek. Wigwam Creek.
Wigwam Creek drainage.

Wednesday, 18 June 2025

Collecting at Twin Creeks

Molly Gulch looking upstream.

Molly Gulch looking downstream.

Orobanche fasciculata along FR 211.

3400

Lithospermum multiflorum.

Plants of Colorado
East Slope of Tarryall Mountains, Jefferson County Boraginaceae

Lithospermum multiflorum Torrey ex A. Gray. Many Flowered Stoneseed.

Molly Gulch, Jefferson County, Colorado. Between Molly Gulch and the former Molly Gulch campground, about 8 miles west and south on F. R. 211 from County Road 126, then 200 m. east toward Goose Creek, 12.1 km. southwest of Deckers. 39.1942°N, 105.34389°W. WGS 1984 Elev. 2163 m. Steep slope above Goose Creek, open ponderosa pine and Douglas fir forest. Mature Douglas fir and ponderosa pines suggest the Hayman Fire (2002) may have burned with low intensity here.

Collected by permit: Pike San Isabel National Forest, 2025, issued: Mar 26, 2025, to: Tom Schweich.

Tom Schweich 3400.

18-Jun-2025

Locations: Twin Creek.
Twin Creek enters Goose Creek.
Coll. No. 3401, Cornus sericea ssp. sericea.

3401

“dogwood,” probably Cornus sericea ssp. sericea.

Plants of Colorado
East Slope of Tarryall Mountains, Jefferson County Cornaceae

Cornus sericea L. ssp. sericea. Creek Dogwood.

Collected by permit: Pike San Isabel National Forest, 2025, issued: Mar 26, 2025, to: Tom Schweich.

Tom Schweich 3401.

18-Jun-2025

Coll. No. 3402, Geum macrophyllum ver. perincisum.

3402

Geum, probably G. macrophyllum.

Plants of Colorado
East Slope of Tarryall Mountains, Jefferson County Rosaceae

Geum macrophyllum Willd. var. perincisum (Rydb.) Raup. Large-leaf Avens.

Twin Creek, Jefferson County, Colorado. On a terrace of the right bank of Twin Creek, near its mouth at Goose Creek, about 250 m. southeast of the Sheeprock Trailhead, 7.7 mi. west and south on F. R. 211 from County Road 126., 11.9 km. southwest of Deckers. 39.19495°N, 105.34209°W. WGS 1984 Elev. 2201 m. Epicalyx bractlets absent, styles hooked, styles have few hairs in some flowers, glands not seen. Ponderosa pine and Douglas fir forest with Cornus sericea, Ribes cereum, Anemonastrum canadense, Galium boreale and Carex inops ssp. heliophila. Mature Douglas fir and ponderosa pines suggest the Hayman Fire (2002) may have burned with low intensity here.

Collected by permit: Pike San Isabel National Forest, 2025, issued: Mar 26, 2025, to: Tom Schweich.

Tom Schweich 3402.

18-Jun-2025

Coll. No. 3403, Veronica americana.

3403

Veronica sp.

Plants of Colorado
East Slope of Tarryall Mountains, Jefferson County Plantaginaceae

Veronica americana (Raf.) Benth. American Speedwell.

Twin Creek, Jefferson County, Colorado. In running water and creek gravel on the right bank of Twin Creek, near its mouth at Goose Creek, about 250 m. southeast of the Sheeprock Trailhead, 7.7 mi. west and south on F. R. 211 from County Road 126., 11.9 km. southwest of Deckers. 39.19488°N, 105.34201°W. WGS 1984 Elev. 2219 m. Leaves petiolate; flowers in axillary racemes. Ponderosa pine and Douglas fir forest with Cornus sericea, Ribes cereum, Anemonastrum canadense, Geum macrophyllum var. perincisum, Galium boreale and Carex inops ssp. heliophila. Mature Douglas fir and ponderosa pines suggest the Hayman Fire (2002) may have burned with low intensity here.

Collected by permit: Pike San Isabel National Forest, 2025, issued: Mar 26, 2025, to: Tom Schweich.

Tom Schweich 3403.

18-Jun-2025

Serial number 3404 skipped accidently.

3405

Erigeron, probably E. flagillaris.

Plants of Colorado
East Slope of Tarryall Mountains, Jefferson County Asteraceae

Erigeron flagellaris A. Gray. Trailing Fleabane.

Twin Creek, Jefferson County, Colorado. On a terrace of the right bank of Twin Creek, near its mouth at Goose Creek, about 250 m. southeast of the Sheeprock Trailhead, 7.7 mi. west and south on F. R. 211 from County Road 126., 11.9 km. southwest of Deckers. 39.19492°N, 105.34213°W. WGS 1984 Elev. 2233 m. Peduncle hairs ascending to appressed. Ponderosa pine and Douglas fir forest with Cornus sericea, Ribes cereum, Anemonastrum canadense, Geum macrophyllum var. perincisum, Galium boreale and Carex inops ssp. heliophila. Mature Douglas fir and ponderosa pines suggest the Hayman Fire (2002) may have burned with low intensity here.

Collected by permit: Pike San Isabel National Forest, 2025, issued: Mar 26, 2025, to: Tom Schweich.

Tom Schweich 3405.

18-Jun-2025

Coll. No. 3505.1, Anemonastrum canadense.

3405.1

Something in the Ranunculaceae, maybe Anemonastrum canadense.

Plants of Colorado
East Slope of Tarryall Mountains, Jefferson County Ranunculaceae

Anemonastrum canadense (L.) Mosyakin. Candian Anemone.

Twin Creek, Jefferson County, Colorado. On a terrace of the right bank of Twin Creek, near its mouth at Goose Creek, about 250 m. southeast of the Sheeprock Trailhead, 7.7 mi. west and south on F. R. 211 from County Road 126., 11.9 km. southwest of Deckers. 39.19492°N, 105.34213°W. WGS 1984 Elev. 2233 m. Ponderosa pine and Douglas fir forest with Erigeron flagellaris, Cornus sericea, Ribes cereum, Geum macrophyllum var. perincisum, Galium boreale and Carex inops ssp. heliophila. Mature Douglas fir and ponderosa pines suggest the Hayman Fire (2002) may have burned with low intensity here.

Collected by permit: Pike San Isabel National Forest, 2025, issued: Mar 26, 2025, to: Tom Schweich.

Tom Schweich 3405.1

18-Jun-2025

3406

Cymopterus lemmonii.

Plants of Colorado
East Slope of Tarryall Mountains, Jefferson County Apiaceae

Cymopterus lemmonii (J. M. Coult. & Rose) Dorn. Alpine False Springparsley.

Twin Creek, Jefferson County, Colorado. On a shaded terrace of the right bank of Twin Creek, near its mouth at Goose Creek, about 250 m. southeast of the Sheeprock Trailhead, 7.7 mi. west and south on F. R. 211 from County Road 126., 11.9 km. southwest of Deckers. 39.19496°N, 105.34232°W. WGS 1984 Elev. 2252 m. Ponderosa pine and Douglas fir forest with Erigeron flagellaris, Cornus sericea, Ribes cereum, Anemonastrum canadense, Geum macrophyllum var. perincisum, Galium boreale and Carex inops ssp. heliophila. Mature Douglas fir and ponderosa pines suggest the Hayman Fire (2002) may have burned with low intensity here.

Collected by permit: Pike San Isabel National Forest, 2025, issued: Mar 26, 2025, to: Tom Schweich.

Tom Schweich 3406.

18-Jun-2025

3407

Carex inops ssp. heliophila.

Plants of Colorado
East Slope of Tarryall Mountains, Jefferson County Cyperaceae

Carex inops L.H. Bailey ssp. heliophila (Mack.) Crins. Sun Sedge.

Twin Creek, Jefferson County, Colorado. On a terrace of the right bank of Twin Creek, near its mouth at Goose Creek, about 250 m. southeast of the Sheeprock Trailhead, 7.7 mi. west and south on F. R. 211 from County Road 126., 11.9 km. southwest of Deckers. 39.19497°N, 105.34243°W. WGS 1984 Elev. 2261 m. Ponderosa pine and Douglas fir forest with Cymopterus lemmonii, Erigeron flagellaris, Cornus sericea, Ribes cereum, Anemonastrum canadense, Geum macrophyllum var. perincisum, and Galium boreale. Mature Douglas fir and ponderosa pines suggest the Hayman Fire (2002) may have burned with low intensity here.

Collected by permit: Pike San Isabel National Forest, 2025, issued: Mar 26, 2025, to: Tom Schweich.

Tom Schweich 3407.

18-Jun-2025

3407.1

Carex, different from above.

Plants of Colorado
East Slope of Tarryall Mountains, Jefferson County Cyperaceae

Carex occidentalis L. H. Bailey. Western Sedge.

Twin Creek, Jefferson County, Colorado. On a terrace of the right bank of Twin Creek, near its mouth at Goose Creek, about 250 m. southeast of the Sheeprock Trailhead, 7.7 mi. west and south on F. R. 211 from County Road 126., 11.9 km. southwest of Deckers. 39.19497°N, 105.34243°W. WGS 1984 Elev. 2261 m. Ponderosa pine and Douglas fir forest with Cymopterus lemmonii, Erigeron flagellaris, Cornus sericea, Ribes cereum, Anemonastrum canadense, Geum macrophyllum var. perincisum, Galium boreale and Carex inops var heliophila. Mature Douglas fir and ponderosa pines suggest the Hayman Fire (2002) may have burned with low intensity here.

Collected by permit: Pike San Isabel National Forest, 2025, issued: Mar 26, 2025, to: Tom Schweich.

Tom Schweich 3407.1

18-Jun-2025

3407.2

A rush of some sort.

3408

Galium boreale.

Plants of Colorado
East Slope of Tarryall Mountains, Jefferson County Rubiaceae

Galium boreale L. Bedstraw.

Twin Creek, Jefferson County, Colorado. On a terrace of the right bank of Twin Creek, near its mouth at Goose Creek, about 250 m. southeast of the Sheeprock Trailhead, 7.7 mi. west and south on F. R. 211 from County Road 126., 11.9 km. southwest of Deckers. 39.19502°N, 105.34241°W. WGS 1984 Elev. 2266 m. Ponderosa pine and Douglas fir forest with Cymopterus lemmonii, Erigeron flagellaris, Cornus sericea, Ribes cereum, Anemonastrum canadense, Geum macrophyllum var. perincisum, and Carex inops var heliophila. Mature Douglas fir and ponderosa pines suggest the Hayman Fire (2002) may have burned with low intensity here.

Collected by permit: Pike San Isabel National Forest, 2025, issued: Mar 26, 2025, to: Tom Schweich.

Tom Schweich 3408.

18-Jun-2025

3409

Hesperostipa comata.

Plants of Colorado
East Slope of Tarryall Mountains, Jefferson County Poaceae

Hesperostipa comata (Trin. & Rupr.) Barkworth. Needle and Thread.

Twin Creek, Jefferson County, Colorado. On a terrace of the right bank of Twin Creek, near its mouth at Goose Creek, about 250 m. southeast of the Sheeprock Trailhead, 7.7 mi. west and south on F. R. 211 from County Road 126., 11.9 km. southwest of Deckers. 39.19503°N, 105.34241°W. WGS 1984 Elev. 2266 m. Ponderosa pine and Douglas fir forest with Cymopterus lemmonii, Erigeron flagellaris, Cornus sericea, Ribes cereum, Anemonastrum canadense, Geum macrophyllum var. perincisum, Galium boreale, and Carex inops var heliophila. Mature Douglas fir and ponderosa pines suggest the Hayman Fire (2002) may have burned with low intensity here.

Collected by permit: Pike San Isabel National Forest, 2025, issued: Mar 26, 2025, to: Tom Schweich.

Tom Schweich 3409.

18-Jun-2025

Locations: Twin Creek.
Coll. No. 3410, Rosa arkansana.
Coll. No. 3410, Rosa arkansana.

3410

Rosa arkansana.

Plants of Colorado
East Slope of Tarryall Mountains, Jefferson County Rosaceae

Rosa arkansana Porter. Prairie Rose.

Twin Creek, Jefferson County, Colorado. On a terrace of the right bank of Twin Creek, near its mouth at Goose Creek, about 250 m. southeast of the Sheeprock Trailhead, 7.7 mi. west and south on F. R. 211 from County Road 126., 11.9 km. southwest of Deckers. 39.19516°N, 105.34247°W. WGS 1984 Elev. 2272 m. Small prickles on new growth, 7-9 leaflets per leaf, leaflets contiguous, terminal blade margins dentate. Ponderosa pine and Douglas fir forest with Cymopterus lemmonii, Erigeron flagellaris, Ribes cereum, Anemonastrum canadense, Geum macrophyllum var. perincisum, Galium boreale, Carex inops var heliophila and Hesperostipa comata. Mature Douglas fir and ponderosa pines suggest the Hayman Fire (2002) may have burned with low intensity here.

Collected by permit: Pike San Isabel National Forest, 2025, issued: Mar 26, 2025, to: Tom Schweich.

Tom Schweich 3410.

18-Jun-2025

Coll. No. 3411, Humulus neomexicanus.

3411

Humulus sp.

Plants of Colorado
East Slope of Tarryall Mountains, Jefferson County Cannabaceae

Humulus neomexicanus (A. Nelson & Cockerell) Rydb. New Mexican Hops.

Twin Creek, Jefferson County, Colorado. On the right bank of Twin Creek, 130 m. above its mouth at Goose Creek, about 180 m. east-southeast of the Sheeprock Trailhead, 7.7 mi. west and south on F. R. 211 from County Road 126., 11.9 km. southwest of Deckers. 39.19563°N, 105.34292°W. WGS 1984 Elev. 2282 m. Sterile, season too early for flowers or fruit. Jumbled down logs with shrubs and herbs including Artemisia frigida, Cirsium vulgare, Ribes idaeus, R. inerme, Thalictrum fendleri, Physocarpus monogynus, and Prunus virginiana. Mixed burned and live mature Douglas fir and ponderosa pines suggest the Hayman Fire (2002) may have burned with low to medium intensity here.

Collected by permit: Pike San Isabel National Forest, 2025, issued: Mar 26, 2025, to: Tom Schweich.

Tom Schweich 3411.

18-Jun-2025

Locations: Twin Creek.
Looking upstream.
Looking downstream toward Sheep Rock.

The midpoint of Twin Creek between Goose Creek and FR 211.

3412

Packera fendleri.

Plants of Colorado
East Slope of Tarryall Mountains, Jefferson County Asteraceae

Packera fendleri (A. Gray) W.A. Weber & Á. Löve. Fendler’s Ragwort.

Twin Creek, Jefferson County, Colorado. Above Twin Creek and Goose Creek, 100 m. southeast of the Sheeprock Trailhead, 7.7 mi. west and south on F. R. 211 from County Road 126., 11.9 km. southwest of Deckers. 39.19558°N, 105.34417°W. WGS 1984 Elev. 2310 m. Open Ponderosa pine forest floor almost devoid of understory, with small Cercocarpus montanus, and occasional Artemisia ludoviciana, Erysimum capitatum, Drymocallis fissa, and Potentilla hippiana. Hayman Fire (2002) mapped as moderate intensity here.

Collected by permit: Pike San Isabel National Forest, 2025, issued: Mar 26, 2025, to: Tom Schweich.

Tom Schweich 3412.

18-Jun-2025

Coll. No. 3413, Packera fendleri.

3413

Packera fendleri.

Plants of Colorado
East Slope of Tarryall Mountains, Jefferson County Asteraceae

Packera fendleri (A. Gray) W.A. Weber & Á. Löve. Fendler’s Ragwort.

Twin Creek, Jefferson County, Colorado. Above Twin Creek and Goose Creek, 90 m. south of the Sheeprock Trailhead, 7.7 mi. west and south on F. R. 211 from County Road 126., 11.9 km. southwest of Deckers. 39.19549°N, 105.34525°W. WGS 1984 Elev. 2313 m. Open Ponderosa pine forest floor almost devoid of understory, with small Cercocarpus montanus, and occasional Artemisia ludoviciana, Erysimum capitatum, Drymocallis fissa, and Potentilla hippiana. Hayman Fire (2002) mapped as moderate intensity here.

Collected by permit: Pike San Isabel National Forest, 2025, issued: Mar 26, 2025, to: Tom Schweich.

Tom Schweich 3413.

18-Jun-2025

Locations: North Twin Creek.

North Twin Creek

3414

Penstemon, probably P. virens.

Plants of Colorado
East Slope of Tarryall Mountains, Jefferson County Plantaginaceae

Penstemon virens Pennell ex Rydb. Front Range Beardtongue.

North Twin Creek, Jefferson County, Colorado. Beside a cow/horse trail along North Twin Creek, 60 m. northwest of the F. R. 211 crossing of North Twin Creek, 6.8 mi. west and south on F. R. 211 from its north end at County Road 126, 11.5 km. southwest of Deckers. 39.20843°N, 105.34566°W. WGS 1984 Elev. 2407 m. Open ponderosa pine and Douglas fir forest, Oxytropis lambertii also collected at this location. Mature trees suggest the Hayman Fire (2002) burned with low intensity here.

Collected by permit: Pike San Isabel National Forest, 2025, issued: Mar 26, 2025, to: Tom Schweich.

Tom Schweich 3414.

18-Jun-2025

Coll. No. 3415, Oxytropis lambertii.

3415

Oxytropis lambertii.

Plants of Colorado
East Slope of Tarryall Mountains, Jefferson County Fabaceae

Oxytropis lambertii Pursh. Purple Locoweed.

North Twin Creek, Jefferson County, Colorado. Beside a cow/horse trail along North Twin Creek, 60 m. northwest of the F. R. 211 crossing of North Twin Creek, 6.8 mi. west and south on F. R. 211 from its north end at County Road 126, 11.5 km. southwest of Deckers. 39.20844°N, 105.34566°W. WGS 1984 Elev. 2407 m. Flowers magenta, fading blue. Open ponderosa pine and Douglas fir forest, Penstemon virens also collected at this location. Mature trees suggest the Hayman Fire (2002) burned with low intensity here.

Collected by permit: Pike San Isabel National Forest, 2025, issued: Mar 26, 2025, to: Tom Schweich.

Tom Schweich 3415.

18-Jun-2025

3416

Sedum lanceolatum.

Plants of Colorado
East Slope of Tarryall Mountains, Jefferson County Crassulaceae

Sedum lanceolatum Torr. Spearleaf Stonecrop.

North Twin Creek, Jefferson County, Colorado. Above the left bank of North Twin Creek, 125 m. northwest of the F. R. 211 crossing of North Twin Creek, 6.8 mi. west and south on F. R. 211 from its north end at County Road 126, 11.5 km. southwest of Deckers. 39.20901°N, 105.34593°W. WGS 1984 Elev. 2414 m. In granite sand and gravel among outcrops of Pikes Peak granite with an open ponderosa pine and Douglas fir forest and Jamesia americana and Scutellaria brittonii. Mature trees suggest the Hayman Fire (2002) burned with low intensity here.

Collected by permit: Pike San Isabel National Forest, 2025, issued: Mar 26, 2025, to: Tom Schweich.

Tom Schweich 3416.

18-Jun-2025

3417

Scutellaria brittonii.

Plants of Colorado
East Slope of Tarryall Mountains, Jefferson County Lamiaceae

Scutellaria brittonii Porter. Britton's Skullcap.

North Twin Creek, Jefferson County, Colorado. Above the left bank of North Twin Creek, 125 m. northwest of the F. R. 211 crossing of North Twin Creek, 6.8 mi. west and south on F. R. 211 from its north end at County Road 126, 11.5 km. southwest of Deckers. 39.20909°N, 105.34595°W. WGS 1984 Elev. 2423 m. In granite sand and gravel among outcrops of Pikes Peak granite with an open ponderosa pine and Douglas fir forest and Jamesia americana and Sedum lanceolatum. Mature trees suggest the Hayman Fire (2002) burned with low intensity here.

Collected by permit: Pike San Isabel National Forest, 2025, issued: Mar 26, 2025, to: Tom Schweich.

Tom Schweich 3417.

18-Jun-2025

3418

Jamesia americana

Plants of Colorado
East Slope of Tarryall Mountains, Jefferson County Hydrangeaceae

Jamesia americana Torr. & A. Gray var. americana. Fivepetal Cliffbush.

North Twin Creek, Jefferson County, Colorado. Above the left bank of North Twin Creek, 125 m. northwest of the F. R. 211 crossing of North Twin Creek, 6.8 mi. west and south on F. R. 211 from its north end at County Road 126, 11.5 km. southwest of Deckers. 39.2091°N, 105.346°W. WGS 1984 Elev. 2424 m. In granite sand and gravel among outcrops of Pikes Peak granite with an open ponderosa pine and Douglas fir forest and Scutellaria brittonii and Sedum lanceolatum. Mature trees suggest the Hayman Fire (2002) burned with low intensity here.

Collected by permit: Pike San Isabel National Forest, 2025, issued: Mar 26, 2025, to: Tom Schweich.

Tom Schweich 3418.

18-Jun-2025

3419

Heuchera parvifolia.

Plants of Colorado
East Slope of Tarryall Mountains, Jefferson County Saxifragaceae

Heuchera parvifolia Nutt. ex Torr. & A. Gray. Littleleaf Alumroot.

North Twin Creek, Jefferson County, Colorado. Low ridge south of North Twin Creek, 120 m. west northwest of the F. R. 211 crossing of North Twin Creek. 6.8 mi. west and south on F. R. 211 from its north end at County Road 126, 11.5 km. southwest of Deckers. 39.2084°N, 105.34646°W. WGS 1984 Elev. 2420 m. Gentle northeast slope, open ponderosa pine and Douglas fir woodland, also collected here: Eremogone fendleri and Synthyris plantaginea. Burned by the Hayman Fire (2002), though mapped as low intensity in this location.

Collected by permit: Pike San Isabel National Forest, 2025, issued: Mar 26, 2025, to: Tom Schweich.

Tom Schweich 3419.

18-Jun-2025

Coll. No. 3420, Synthyris plantaginea.

3420

Synthyris plantaginea.

Plants of Colorado
East Slope of Tarryall Mountains, Jefferson County Plantaginaceae

Synthyris plantaginea (James) Benth. White River Kittentails.

North Twin Creek, Jefferson County, Colorado. Low ridge south of North Twin Creek, 120 m. west northwest of the F. R. 211 crossing of North Twin Creek. 6.8 mi. west and south on F. R. 211 from its north end at County Road 126, 11.5 km. southwest of Deckers. 39.20841°N, 105.34648°W. WGS 1984 Elev. 2416 m. Gentle northeast slope, open ponderosa pine and Douglas fir woodland, also collected here: Eremogone fendleri and Heuchera parvifolia. Burned by the Hayman Fire (2002), though mapped as low intensity in this location.

Collected by permit: Pike San Isabel National Forest, 2025, issued: Mar 26, 2025, to: Tom Schweich.

Tom Schweich 3420.

18-Jun-2025

Coll. No. 3421, Geranium caespitosum.

3421

Geranium, probably G. caespitosum.

Plants of Colorado
East Slope of Tarryall Mountains, Jefferson County Geraniaceae

Geranium caespitosum James. Pineywoods Geranium.

North Twin Creek, Jefferson County, Colorado. Near top of a low ridge south of North Twin Creek, 140 m. west of the F. R. 211 crossing of North Twin Creek. 6.8 mi. west and south on F. R. 211 from its north end at County Road 126, 11.5 km. southwest of Deckers. 39.208°N, 105.3467°W. WGS 1984 Elev. 2424 m. Petals pink, magenta guides. sticky. Gentle northeast slope, open ponderosa pine and Douglas fir woodland, also collected here: Castilleja integra and Ceanothus fendleri. Burned by the Hayman Fire (2002), though mapped as low intensity in this location.

Collected by permit: Pike San Isabel National Forest, 2025, issued: Mar 26, 2025, to: Tom Schweich.

Tom Schweich 3421.

18-Jun-2025

Inflorescence of Coll. No. 3422, Castilleja integra.

Coll. No. 3422, Castilleja integra.

3422

Castilleja integra.

Plants of Colorado Orobanchaceae

Castilleja integra A. Gray. Wholeleaf Indian Paintbrush.

North Twin Creek, Jefferson County, Colorado. Near top of a low ridge south of North Twin Creek, 140 m. west of the F. R. 211 crossing of North Twin Creek. 6.8 mi. west and south on F. R. 211 from its north end at County Road 126, 11.5 km. southwest of Deckers. 39.20792°N, 105.34668°W. WGS 1984 Elev. 2425 m. Gentle northeast slope, open ponderosa pine and Douglas fir woodland, also collected here: Geranium caespitosum and Ceanothus fendleri. Burned by the Hayman Fire (2002), though mapped as low intensity in this location.

Collected by permit: Pike San Isabel National Forest, 2025, issued: Mar 26, 2025, to: Tom Schweich.

Tom Schweich 3422.

18-Jun-2025

Other articles:
• Social Trail: along trail;

Locations: North Table Mountain Open Space (City of Golden).
Head scarp of an ancient land slide.

Monday, 23 June 2025

North Table Mountain Open Space.

3423

Lupinus argenteus.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado Fabaceae

Lupinus argenteus Pursh var. argenteus. Loosely Flowered Silver Lupine.

North Table Mountain Open Space (City of Golden), Jefferson County, Colorado. Southwest slope of North Table Mountain, northern part of the open space, along a social trail, in an area of hummocky ground suggesting an ancient landslide, 2.34 km. north of the GNIS location of Golden. 39.77636°N, 105.22552°W. WGS 1984 Elev. 1905 m. Basal leaves withered, very small spur. Low shrubs, forbs, and grasses, with Grindelia subalpina, Heterotheca villosa, Monarda fistulosa, Carex inops var. heliophila, and Bromus japonicus.

Collected by permit: City of Golden, 2025, issued: Mar 14, 2025, to: Tom Schweich.

Tom Schweich 3423.

23-Jun-2025

3424

Bromus japonicus.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado Poaceae

Bromus japonicus Thunb. Japanese Cheat Grass.

North Table Mountain Open Space (City of Golden), Jefferson County, Colorado. Southwest slope of North Table Mountain, northern part of the open space, along a social trail, in an area of hummocky ground suggesting an ancient landslide, 2.34 km. north of the GNIS location of Golden. 39.77639°N, 105.22547°W. WGS 1984 Elev. 1905 m. Low shrubs, forbs, and grasses, with Grindelia subalpina, Heterotheca villosa, Lupinus argenteus var. argenteus, Monarda fistulosa, and Carex inops var. heliophila.

Collected by permit: City of Golden, 2025, issued: Mar 14, 2025, to: Tom Schweich.

Tom Schweich 3424.

23-Jun-2025

3425

Monarda fistulosa

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado Lamiaceae

Monarda fistulosa L. Wild Bergamot.

North Table Mountain Open Space (City of Golden), Jefferson County, Colorado. Southwest slope of North Table Mountain, northern part of the open space, along a social trail, in an area of hummocky ground suggesting an ancient landslide, 2.34 km. north of the GNIS location of Golden. 39.7763°N, 105.22547°W. WGS 1984 Elev. 1905 m. Low shrubs, forbs, and grasses, with Grindelia subalpina, Heterotheca villosa, Lupinus argenteus var. argenteus, Carex inops var. heliophila, and Bromus japonicus.

Collected by permit: City of Golden, 2025, issued: Mar 14, 2025, to: Tom Schweich.

Tom Schweich 3425.

23-Jun-2025

3426

Heterotheca villosa

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado Asteraceae

Heterotheca villosa (Pursh) Shinners var. minor (Hook.) Semple. Hairy False Goldenaster.

North Table Mountain Open Space (City of Golden), Jefferson County, Colorado. Southwest slope of North Table Mountain, northern part of the open space, along a social trail, in an area of hummocky ground suggesting an ancient landslide, 2.34 km. north of the GNIS location of Golden. 39.7764°N, 105.22549°W. WGS 1984 Elev. 1905 m. Low shrubs, forbs, and grasses, with Grindelia subalpina, Lupinus argenteus var. argenteus, Monarda fistulosa, Carex inops var. heliophila, and Bromus japonicus. Designated a City of Golden Open Space in 2025.

Collected by permit: City of Golden, 2025, issued: Mar 14, 2025, to: Tom Schweich.

Tom Schweich 3426.

23-Jun-2025

Maybe should be Heterotheca hirsutissima (Greene) G. L. Nesom.

3427

Achillea millefolium.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado Asteraceae

Achillea millefolium L. Common Yarrow.

North Table Mountain Open Space (City of Golden), Jefferson County, Colorado. Southwest slope of North Table Mountain, northern part of the open space, along a social trail, in an area of hummocky ground suggesting an ancient landslide, 2.39 km. north of the GNIS location of Golden. 39.77688°N, 105.22495°W. WGS 1984 Elev. 1904 m. Low shrubs, forbs, and grasses, with Ligusticum porteri, Artemisia ludoviciana, Carduus nutans, Gutierrezia sarothrae, Turritis glabra, and Toxicoscordion paniculatum. Designated a City of Golden Open Space in 2025.

Collected by permit: City of Golden, 2025, issued: Mar 14, 2025, to: Tom Schweich.

Tom Schweich 3427.

23-Jun-2025

Other articles:
• Social Trail: at Coll. No. 3428;
Coll. No. 3428, Ligusticum porteri.
Dried basal leaf of Coll. No. 3428, Ligusticum porteri.

3428

Ligusticum porteri

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado Apiaceae

Ligusticum porteri J.M. Coult. & Rose. Porter's Licorice-Root.

North Table Mountain Open Space (City of Golden), Jefferson County, Colorado. Along a social trail in the northern part of the North Table Mountain Open Space, beside one of the larger watercourses coming down from the top of the mesa, 2.4 km. north of the GNIS location of Golden. 39.77721°N, 105.22487°W. WGS 1984 Elev. 1903 m. Basal leaves reddish at base. Seen or collected narby: Ericameria nauseosa var. graveolens, Campanula rotundifolia, Prunus americana, P. virginiana, Acer glabrum, and Bromus inermis.

Collected by permit: City of Golden, 2025, issued: Mar 14, 2025, to: Tom Schweich.

Tom Schweich 3428.

23-Jun-2025

Dried inflorescence of Coll. No. 3428, Ligusticum porteri.

Coll. No. 3428, Ligusticum porteri.

3429

Acer glabrum

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado Sapindaceae

Acer glabrum Torr. Rocky Mountain Maple.

North Table Mountain Open Space (City of Golden), Jefferson County, Colorado. Along a social trail in the northern part of the North Table Mountain Open Space, beside one of the larger watercourses coming down from the top of the mesa, 2.42 km. north of the GNIS location of Golden. 39.77718°N, 105.22481°W. WGS 1984 Elev. 1903 m. Seen or collected nearby: Ericameria nauseosa var. graveolens, Campanula rotundifolia, Prunus americana, P. virginiana, Galium boreale, and Bromus inermis. One of several quintessential Jefferson County taxa, as the type was collected in Platte Canyon by Dr. Edwin James of the Major Stephen H. Long expedition of 1820.

Collected by permit: City of Golden, 2025, issued: Mar 14, 2025, to: Tom Schweich.

Tom Schweich 3429.

23-Jun-2025

Galium boreale.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado Rubiaceae

Galium boreale L. Bedstraw.

North Table Mountain Open Space (City of Golden), Jefferson County, Colorado. Along a social trail in the northern part of the North Table Mountain Open Space, beside one of the larger watercourses coming down from the top of the mesa, 2.42 km. north of the GNIS location of Golden. 39.77718°N, 105.22482°W. WGS 1984 Elev. 1903 m. Seen or collected nearby: Ericameria nauseosa var. graveolens, Campanula rotundifolia, Prunus americana, P. virginiana, Acer glabrum, and Bromus inermis. Designated as a City of Golden Open Space in 2025.

Collected by permit: City of Golden, 2025, issued: Mar 14, 2025, to: Tom Schweich.

Tom Schweich 3429.1

23-Jun-2025

Locations: North Table Mountain Open Space (City of Golden).
Head scarp of an ancient land slide.

Friday, 27 June 2025

North Table Mountain Open Space.

Other articles:
• County Route 126.: at ranch; at FR 528G;

Locations: North Twin Creek.
North Fork between Pine Valley and Buffalo Creek.

Wednesday, July 2, 2025

North Twin Creek

Target-shooting range.

Forest Road 528G

Other articles:
• Notes on Colorado Flora: Heracleum maximum;
Coll. No. 3430, Heracleum maximum.
Coll. No. 3430, Heracleum maximum.

3430

Heracleum maximum.

Plants of Colorado
East Slope of Tarryall Mountains, Jefferson County Apiaceae

Heracleum maximum Bartr. Common Cow Parsnip.

North Twin Creek, Jefferson County, Colorado. Left bank of North Twin Creek, 185 m. northwest of the F. R. 211 crossing of North Twin Creek. 6.8 mi. west and south on F. R. 211 from its north end at County Road 126, 11.6 km. southwest of Deckers. 39.20888°N, 105.34703°W. WGS 1984 Elev. 2407 m. Leaves ternate, large lobes, flowers white. Streamside mature ponderosa pine and Douglas fir forest, also collected here: Monarda fistulosa, Rubis idaeus, and Verbascum thapsus. Within the perimeter of the Hayman Fire (2002), though this area mapped as low intensity.

Collected by permit: Pike San Isabel National Forest, 2025, issued: Mar 26, 2025, to: Tom Schweich.

Tom Schweich 3430.

2-Jul-2025

3431

Rudbeckia laciniata.

Plants of Colorado
East Slope of Tarryall Mountains, Jefferson County Asteraceae

Rudbeckia laciniata L. var. ampla (A. Nelson) Cronquist. Cut-Leaf Coneflower..

North Twin Creek, Jefferson County, Colorado. Left bank of North Twin Creek, 205 m. northwest of the F. R. 211 crossing of North Twin Creek. 6.8 mi. west and south on F. R. 211 from its north end at County Road 126, 11.6 km. southwest of Deckers. 39.20892°N, 105.34727°W. WGS 1984 Elev. 2411 m. Streamside among aspen and water birch near creek in mature ponderosa pine and Douglas fir forest, also collected here: Betula occidentalis, Monarda fistulosa, Rosa acicularis ssp. sayi, Rubis idaeus, and Verbascum thapsus. Within the perimeter of the Hayman Fire (2002), though this area mapped as low intensity.

Collected by permit: Pike San Isabel National Forest, 2025, issued: Mar 26, 2025, to: Tom Schweich.

Tom Schweich 3431.

2-Jul-2025

3432

“Shooting Stars”

Plants of Colorado
East Slope of Tarryall Mountains, Jefferson County Primulaceae

Primula pauciflora (Durand) A. R. Mast & Reveal var. pauciflora. Darkthroat Shooting Star.

North Twin Creek, Jefferson County, Colorado. Left bank of North Twin Creek, 205 m. northwest of the F. R. 211 crossing of North Twin Creek. 6.8 mi. west and south on F. R. 211 from its north end at County Road 126, 11.6 km. southwest of Deckers. 39.20889°N, 105.34728°W. WGS 1984 Elev. 2412 m. Streamside among aspen and water birch near creek in mature ponderosa pine and Douglas fir forest, also collected here: Betula occidentalis, Monarda fistulosa, Rosa acicularis ssp. sayi, Rubis idaeus, and Verbascum thapsus. Within the perimeter of the Hayman Fire (2002), though this area mapped as low intensity.

Collected by permit: Pike San Isabel National Forest, 2025, issued: Mar 26, 2025, to: Tom Schweich.

Tom Schweich 3432.

2-Jul-2025

3432.1

“Enchanter's Nightshade”

Plants of Colorado
East Slope of Tarryall Mountains, Jefferson County Onagraceae

Circaea alpina L. Small Enchanter's Nightshade.

North Twin Creek, Jefferson County, Colorado. Left bank of North Twin Creek, 205 m. northwest of the F. R. 211 crossing of North Twin Creek. 6.8 mi. west and south on F. R. 211 from its north end at County Road 126, 11.6 km. southwest of Deckers. 39.20889°N, 105.34729°W. WGS 1984 Elev. 2412 m. Streamside among aspen and water birch near creek in mature ponderosa pine and Douglas fir forest, also collected here: Betula occidentalis, Monarda fistulosa, Primula pauciflora, Rosa acicularis ssp. sayi, and Rubis idaeus. Within the perimeter of the Hayman Fire (2002), though this area mapped as low intensity.

Collected by permit: Pike San Isabel National Forest, 2025, issued: Mar 26, 2025, to: Tom Schweich.

Tom Schweich 3432.1

2-Jul-2025

The roses here have few narrow prickles on new growth, and 7 (9) leaflets, but they are not in bloom. They are probably R. acicularis var. sayi.

Coll. No. 3433, Rudbeckia hirta var. pulchellum

Coll. No. 3433, Rudbeckia hirta var. pulcherrima.

3433

Rudbeckia hirta var. pulcherrima.

Plants of Colorado
East Slope of Tarryall Mountains, Jefferson County Asteraceae

Rudbeckia hirta L. var. pulcherrima Farw. Black-Eyed Susan.

North Twin Creek, Jefferson County, Colorado. Left bank of North Twin Creek, 215 m. northwest of the F. R. 211 crossing of North Twin Creek, 6.8 mi. west and south on F. R. 211 from its north end at County Road 126, 11.6 km. southwest of Deckers. 39.20894°N, 105.34732°W. WGS 1984 Elev. 2417 m. Solitary plants to clumps of 12 stems. Yellow rays, pappus absent, hirsute. Streamside among aspen and water birch near creek in mature ponderosa pine and Douglas fir forest, also collected here: Betula occidentalis, Monarda fistulosa, Primula pauciflora, Rosa acicularis ssp. sayi, and Rubus idaeus. Within the perimeter of the Hayman Fire (2002), though this area mapped as low intensity.

Collected by permit: Pike San Isabel National Forest, 2025, issued: Mar 26, 2025, to: Tom Schweich.

Tom Schweich 3433.

2-Jul-2025

Coll. No. 3434, Geranium richardsonii.

3434

Geranium with plain white petals, maybe G. richardson.

Plants of Colorado
East Slope of Tarryall Mountains, Jefferson County Geraniaceae

Geranium richardsonii Fisch. & Trautv. Richardson's Geranium.

North Twin Creek, Jefferson County, Colorado. Left bank of North Twin Creek, 210 m. northwest of the F. R. 211 crossing of North Twin Creek, 6.8 mi. west and south on F. R. 211 from its north end at County Road 126, 11.6 km. southwest of Deckers. 39.20899°N, 105.34747°W. WGS 1984 Elev. 2413 m. Cauline leaf lobes acute; pedicels glandular, some purple-tipped; petals white without purple guidelines. Mature ponderosa pine and Douglas fir forest away from creek, also here: Rudbeckia hirta var. pulcherrima, G. caespitosum, Monarda fistulosa, Primula pauciflora, Rosa acicularis ssp. sayi, and Rubus idaeus. Within the perimeter of the Hayman Fire (2002), though this area mapped as low intensity.

Collected by permit: Pike San Isabel National Forest, 2025, issued: Mar 26, 2025, to: Tom Schweich.

Tom Schweich 3434.

2-Jul-2025

Coll. No. 3435, Betula occidentalis.

3435

Betula occidentalis.

Plants of Colorado
East Slope of Tarryall Mountains, Jefferson County Betulaceae

Betula occidentalis Hook. Water Birch.

North Twin Creek, Jefferson County, Colorado. Left bank of North Twin Creek, 230 m. northwest of the F. R. 211 crossing of North Twin Creek, 6.8 mi. west and south on F. R. 211 from its north end at County Road 126, 11.6 km. southwest of Deckers. 39.20894°N, 105.34755°W. WGS 1984 Elev. 2413 m. Streamside with aspen in mature ponderosa pine and Douglas fir forest, also collected here: Monarda fistulosa, Circaea alpina, Primula pauciflora var. pauciflora, Rosa acicularis ssp. sayi, and Rubus idaeus. Within the perimeter of the Hayman Fire (2002), though this area mapped as low intensity.

Collected by permit: Pike San Isabel National Forest, 2025, issued: Mar 26, 2025, to: Tom Schweich.

Tom Schweich 3435.

2-Jul-2025

Other articles:
• Glossary: pseudoscape;

3436

Cymopterus lemmonii.

Plants of Colorado
East Slope of Tarryall Mountains, Jefferson County Apiaceae

Cymopterus lemmonii (J. M. Coult. & Rose) Dorn. Alpine False Springparsley.

North Twin Creek, Jefferson County, Colorado. Left bank of North Twin Creek, 275 m. northwest of the F. R. 211 crossing of North Twin Creek, 6.8 mi. west and south on F. R. 211 from its north end at County Road 126, 11.6 km. southwest of Deckers. 39.20935°N, 105.34776°W. WGS 1984 Elev. 2419 m. Finished flowering, in fruit. Open Douglas fir and ponderosa pine forest floor, away from the creek, without middlestory, also here: Nassella viridula. Within the perimeter of the Hayman Fire (2002), though this area mapped as low intensity.

Collected by permit: Pike San Isabel National Forest, 2025, issued: Mar 26, 2025, to: Tom Schweich.

Tom Schweich 3436.

2-Jul-2025

Does not have a pseudoscape. Some taxa within Cymopterus have a pseudoscape and some do not.

Coll. No. 3437, Platanthera?

Coll. No. 3437, Platanthera aquilonis.

3437

Orchid, looks like a Platanthera.

Plants of Colorado
East Slope of Tarryall Mountains, Jefferson County Orchidaceae

Platanthera aquilonis Sheviak. Northern Green Orchid.

North Twin Creek, Jefferson County, Colorado. On a right branch of North Twin Creek, 870 m. upstream of the F. R. 211 crossing of North Twin Creek, 6.8 mi. west and south on F. R. 211 from its north end at County Road 126, 11.6 km. southwest of Deckers. 39.21422°N, 105.35131°W. WGS 1984 Elev. 2467 m. Bank of creek among willows, with Mertensia sp., Dasiphora fruticosa, Carex stipata, and Juncus sp. Within the perimeter of the Hayman Fire (2002), though this area mapped as low intensity; vegetated only on the creek, forest not re-established away from creek.

Collected by permit: Pike San Isabel National Forest, 2025, issued: Mar 26, 2025, to: Tom Schweich.

Tom Schweich 3437.

2-Jul-2025

3437.1

Mertensia.

Plants of Colorado
East Slope of Tarryall Mountains, Jefferson County Boraginaceae

Mertensia ciliata (Torr.) G. Don var. ciliata. Tall Fringed Bluebells.

North Twin Creek, Jefferson County, Colorado. On a right branch of North Twin Creek, 870 m. upstream of the F. R. 211 crossing of North Twin Creek, 6.8 mi. west and south on F. R. 211 from its north end at County Road 126, 11.6 km. southwest of Deckers. 39.21422°N, 105.35132°W. WGS 1984 Elev. 2467 m. Bank of creek among willows, with Dasiphora fruticosa, Platanthera aquilonis, Carex stipata, and Juncus sp. Within the perimeter of the Hayman Fire (2002), though this area mapped as low intensity; vegetated only on the creek, forest not re-established away from creek.

Collected by permit: Pike San Isabel National Forest, 2025, issued: Mar 26, 2025, to: Tom Schweich.

Tom Schweich 3437.1

2-Jul-2025

Leaves
- cauline, with evident lateral veins (more than 1 pair).
- Adaxial surface, not strigose, pustulate bases that a good imagination would suggest hairs — i.e., papillae (per W&W).
Calyx
- not tubular
- cleft >: half way

Variety ciliata accepted in Colorado beginning with Ackerfield (2022).

Small wetland around creek below burned slopes.

3438

Dasiphora fruticosa.

Plants of Colorado
East Slope of Tarryall Mountains, Jefferson County Rosaceae

Dasiphora fruticosa (L.) Rydb. Shrubby Cinquefoil, Golden Hardtack.

North Twin Creek, Jefferson County, Colorado. On a right branch of North Twin Creek, 870 m. upstream of the F. R. 211 crossing of North Twin Creek, 6.8 mi. west and south on F. R. 211 from its north end at County Road 126, 11.6 km. southwest of Deckers. 39.21448°N, 105.35141°W. WGS 1984 Elev. 2468 m. Bank of creek among aspen and river birch, with Mertensia ciliata, Platanthera aquilonis, Carex stipata, and Juncus sp. Within the perimeter of the Hayman Fire (2002), though this area mapped as low intensity; vegetated only on the creek, forest not re-established away from creek.

Collected by permit: Pike San Isabel National Forest, 2025, issued: Mar 26, 2025, to: Tom Schweich.

Tom Schweich 3438.

2-Jul-2025

3439

Carex sp., probably C. stipata.

Plants of Colorado
East Slope of Tarryall Mountains, Jefferson County Cyperaceae

Carex stipata Muhl. ex Willd. Saw Beaked Sedge.

North Twin Creek, Jefferson County, Colorado. On a right branch of North Twin Creek, about 900 m. upstream of the F. R. 211 crossing of North Twin Creek, 6.8 mi. west and south on F. R. 211 from its north end at County Road 126, 11.6 km. southwest of Deckers. 39.21448°N, 105.35142°W. WGS 1984 Elev. 2469 m. Sheath fronts faintly cross rugulose. Bank of creek among aspen and river birch, with Mertensia ciliata, Dasiphora fruticosa, Platanthera aquilonis, and Juncus sp. Within the perimeter of the Hayman Fire (2002), though this area mapped as low intensity; vegetated only on the creek, forest not re-established away from creek.

Collected by permit: Pike San Isabel National Forest, 2025, issued: Mar 26, 2025, to: Tom Schweich.

Tom Schweich 3439.

2-Jul-2025

Coll. No. 3439.1, Juncus ensifolius.

3439.1

Juncus sp.

Plants of Colorado
East Slope of Tarryall Mountains, Jefferson County Juncaceae

Juncus ensifolius Wikstr. Sword-Leaf Rush.

North Twin Creek, Jefferson County, Colorado. On a right branch of North Twin Creek, about 900 m. upstream of the F. R. 211 crossing of North Twin Creek, 6.8 mi. west and south on F. R. 211 from its north end at County Road 126, 11.6 km. southwest of Deckers. 39.21448°N, 105.35142°W. WGS 1984 Elev. 2469 m. Leaf blades equitant. Bank of creek among aspen and river birch, with Mertensia ciliata, Dasiphora fruticosa, Platanthera aquilonis, and Carex stipata. Within the perimeter of the Hayman Fire (2002), though this area mapped as low intensity; vegetated only on the creek, forest not re-established away from creek.

Collected by permit: Pike San Isabel National Forest, 2025, issued: Mar 26, 2025, to: Tom Schweich.

Tom Schweich 3439.1

2-Jul-2025

Coll. No. 3439.2, Carex interior.

Inflorescence of Coll. No. 3439.2, Carex interior.

3439.2

Juncus sp.

Plants of Colorado
East Slope of Tarryall Mountains, Jefferson County Cyperaceae

Carex interior L. H. Bailey. Inland Sedge.

North Twin Creek, Jefferson County, Colorado. On a right branch of North Twin Creek, about 900 m. upstream of the F. R. 211 crossing of North Twin Creek, 6.8 mi. west and south on F. R. 211 from its north end at County Road 126, 11.6 km. southwest of Deckers. 39.2145°N, 105.35142°W. WGS 1984 Elev. 2471 m. Stellate with a short beak. Bank of creek among aspen and river birch, with Mertensia ciliata, Dasiphora fruticosa, Platanthera aquilonis, Juncus ensifolius, and Carex stipata. Within the perimeter of the Hayman Fire (2002), though this area mapped as low intensity; vegetated only on the creek, forest not re-established away from creek.

Collected by permit: Pike San Isabel National Forest, 2025, issued: Mar 26, 2025, to: Tom Schweich.

Tom Schweich 3439.2

2-Jul-2025

Coll. No. 3439.3, Carex leptalea.

3439.3

Plants of Colorado
East Slope of Tarryall Mountains, Jefferson County Cyperaceae

Carex leptalea Wahlenberg. Bristly-stalked Sedge.

North Twin Creek, Jefferson County, Colorado. On a right branch of North Twin Creek, about 900 m. upstream of the F. R. 211 crossing of North Twin Creek, 6.8 mi. west and south on F. R. 211 from its north end at County Road 126, 11.6 km. southwest of Deckers. 39.2145°N, 105.35142°W. WGS 1984 Elev. 2471 m. Accidental collection with #3439.2. A tiny little piece that probably does not deserve a voucher. Bank of creek among aspen and river birch, with Mertensia ciliata, Dasiphora fruticosa, Platanthera aquilonis, Juncus ensifolius, and Carex stipata. Within the perimeter of the Hayman Fire (2002), though this area mapped as low intensity; vegetated only on the creek, forest not re-established away from creek.

Collected by permit: Pike San Isabel National Forest, 2025, issued: Mar 26, 2025, to: Tom Schweich.

Tom Schweich 3439.3

2-Jul-2025

3440

Potentilla, maybe P. hippiana.

Plants of Colorado
East Slope of Tarryall Mountains, Jefferson County Rosaceae

Potentilla hippiana Lehm. var. hippiana. Wooly Cinquefoil.

North Twin Creek, Jefferson County, Colorado. Along horse/cow trail above the left bank of the creek, about 520 m. upstream of the F. R. 211 crossing of North Twin Creek, 6.8 mi. west and south on F. R. 211 from its north end at County Road 126, 11.6 km. southwest of Deckers. 39.21099°N, 105.34981°W. WGS 1984 Elev. 2437 m. Leaves pinnate, tomentose both sides. Mature Douglas fir and ponderosa pine forest, with Achillea millefolium, Erigeron speciosa, Gaillardia aristata, Monarda fistulosa, Rubus idaeus, Verbascum thapsus, and Corallorhiza maculata. Within the perimeter of the Hayman Fire (2002), though this area mapped as unburned.

Collected by permit: Pike San Isabel National Forest, 2025, issued: Mar 26, 2025, to: Tom Schweich.

Tom Schweich 3440.

2-Jul-2025

Coll. No. 3441, Linaria vulgaris.

3441

Linaria vulgaris.

Plants of Colorado
East Slope of Tarryall Mountains, Jefferson County Plantaginaceae

Linaria vulgaris Mill. Butter and Eggs.

North Twin Creek, Jefferson County, Colorado. Along horse/cow trail above the left bank of the creek, about 350 m. upstream of the F. R. 211 crossing of North Twin Creek, 6.8 mi. west and south on F. R. 211 from its north end at County Road 126, 11.6 km. southwest of Deckers. 39.21006°N, 105.34835°W. WGS 1984 Elev. 2430 m. Small colony of 20 plants. Mixed down and mature live Douglas fir and ponderosa pine, with Cryptantha virgata, Oenothera villosa, and Ipomopsis aggregata. Within the perimeter of the Hayman Fire (2002), While this area is mapped as unburned, there are burned trees and down logs here.

Collected by permit: Pike San Isabel National Forest, 2025, issued: Mar 26, 2025, to: Tom Schweich.

Tom Schweich 3441.

2-Jul-2025

3442

Ipomopsis aggregata.

Plants of Colorado
East Slope of Tarryall Mountains, Jefferson County Polemoniaceae

Ipomopsis aggregata (Pursh) V.E. Grant ssp. collina (Greene) Wilken & Allard. Scarlet Gilia.

North Twin Creek, Jefferson County, Colorado. Along horse/cow trail above the left bank of the creek, about 325 m. upstream of the F. R. 211 crossing of North Twin Creek, 6.8 mi. west and south on F. R. 211 from its north end at County Road 126, 11.6 km. southwest of Deckers. 39.20979°N, 105.34825°W. WGS 1984 Elev. 2426 m. Mixed down and mature live Douglas fir and ponderosa pine, with Cryptantha virgata, Oenothera villosa, and Linaria vulgaris. Within the perimeter of the Hayman Fire (2002), While this area is mapped as unburned, there are burned trees and down logs here.

Collected by permit: Pike San Isabel National Forest, 2025, issued: Mar 26, 2025, to: Tom Schweich.

Tom Schweich 3442.

2-Jul-2025

Coll. No. 3443, Oenothera coronopifolia.

3443

Oenothera coronopfolia.

Plants of Colorado
East Slope of Tarryall Mountains, Jefferson County Onagraceae

Oenothera coronopifolia Torr. & A. Gray. Crownleaf Evening Primrose. Hierba de San Juan..

North Twin Creek, Jefferson County, Colorado. Along horse/cow trail above the left bank of the creek, about 100 m. upstream of the F. R. 211 crossing of North Twin Creek, 6.8 mi. west and south on F. R. 211 from its north end at County Road 126, 11.6 km. southwest of Deckers. 39.20875°N, 105.3459°W. WGS 1984 Elev. 2410 m. Flowers white, fading pink. Mature Douglas fir and ponderosa pine forest, with Oxytropis lambertii and Penstemon virens nearby. Within the perimeter of the Hayman Fire (2002); this area is mapped as low intensity.

Collected by permit: Pike San Isabel National Forest, 2025, issued: Mar 26, 2025, to: Tom Schweich.

Tom Schweich 3443.

2-Jul-2025

Friday, July 4th

Other articles:
• Golden Checklist Flora: Avena fatua;
Obs. No. 4231, Avena fatua.
Obs. No. 4231, Avena fatua.

3444

Avena fatua.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado Poaceae

Avena fatua L. Wild Oat.

Golden, Jefferson County, Colorado. Parkway native garden at 420 Arapahoe, Golden, about 920 m. northwest of the GNIS location of Golden. 39.76135°N, 105.22865°W. WGS 1984 Callus bearded. First seen in 2025 in an established native garden that was about 10 years in age. Nearest other Jefferson County collections: Kipling/38th, Rocky Flats. iNaturalist Observation 295156093.

Collected by permit: City of Golden, 2025, issued: Mar 14, 2025, to: Tom Schweich.

Tom Schweich 3444.

4-Jul-2025

Monday, 7 July 2025

Tucker Gulch, Welch Ditch, Kinney Run, Parfet Open Space.

Locations: Tucker Gulch (lower).
Coll. No. 3445, Tanacetum parthenium.
Coll. No. 3445, Tanacetum parthenium.

3445

Tanacetum parthenium.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado Asteraceae

Tanacetum parthenium (L.) Sch.Bip. Feverfew.

Tucker Gulch (lower), Jefferson County, Colorado. Right bank of Tucker Gulch in Norman D. Park, just upstream of North Ford Street,1.92 km. north northwest of the GNIS location of Golden. 39.77103°N, 105.23131°W. WGS 1984 Elev. 1787 m. Naturalized. In an opening between trees lining the south side of the creek: Populus deltoides ssp. monilifera, Acer negundo, and Ulmus pumilus. EDDMapS Record ID 13517275.

Collected by permit: City of Golden, 2025, issued: Mar 14, 2025, to: Tom Schweich.

Tom Schweich 3445.

7-Jul-2025

Locations: Cottonwood Natural Area.
Coll. No. 3446, Solanum dulcamara.

3446

Solanum dulcamara.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado Solanaceae

Solanum dulcamara L. Climbing Nightshade.

Cottonwood Open Space (City of Golden), Jefferson County, Colorado. Right bank of the Welch Ditch in the western corner of Cottonwood Open Space, 1.63 km. south of the GNIS location of Golden. 39.74203°N, 105.21373°W. WGS 1984 Elev. 1764 m. Several patches on the overgrown bank of ditch. Cottonwood Open Space, formerly named Cottonwood Natural Area, was designated by the City of Golden in July 2025.

Collected by permit: City of Golden, 2025, issued: Mar 14, 2025, to: Tom Schweich.

Tom Schweich 3446.

7-Jul-2025

Locations: Parfet Open Space (City of Golden).

3447

Krascheninnikovia lanata.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado Chenopodiaceae

Krascheninnikovia lanata (Pursh) A. D. J. Meeuse & Smit. Winter Fat.

Parfet Open Space (City of Golden), Jefferson County, Colorado. Western part of open space above the Welch Ditch, 1.09 km. southwest of the GNIS location of Golden. 39.74886°N, 105.23036°W. WGS 1984 Elev. 1782 m. Mostly staminate plants here. Mixed-grass prairie with Ericameria nauseosa varieties nauseosa and graveolens. Designated a City of Golden open space in July 2025.

Collected by permit: City of Golden, 2025, issued: Mar 14, 2025, to: Tom Schweich.

Tom Schweich 3447.

7-Jul-2025

Locations: Parfet Open Space (City of Golden).
Observation No. 4232, Ericameria nauseosa var. nauseosa.

Ericameria nauseosa var. nauseosa.

Locations: South Table Mountain Park.

Thursday, 10 July 2025

South Table Mountain

Coll. No. 3448, Solanum elaeagnifolium.

3448

Solanum elaeagnifolium.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado Solanaceae

Solanum elaeagnifolium Cav. Silverleaf Nightshade.

South Table Mountain, Jefferson County, Colorado. Berm just to the southeast of the City of Golden water tank above Rimrock Drive, southwest corner of South Table Mountain, 2.16 km. southeast of the GNIS location of Golden. 39.74523°N, 105.19977°W. WGS 1984 Elev. 1822 m. Fruit persistent. With Rhus trilobata, Ambrosia psilostachya, Ericameria nauseosa, vars. nauseosa and graveolens, Alyssum simplex, Physalis hederifolia, Opuntia macrorhiza, Agropyron cristatum, and Bromus tectorum, Located per Loraine Yeatts' iNaturalist observation no. 258416989.

Collected by permit: City of Golden, 2025, issued: Mar 14, 2025, to: Tom Schweich.

Tom Schweich 3448.

10-Jul-2025

3449

Physalis hederifolia.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado Solanaceae

Physalis hederifolia A. Gray. Ivy-Leaved Ground Cherry.

South Table Mountain, Jefferson County, Colorado. Berm just to the southeast of the City of Golden water tank above Rimrock Drive, southwest corner of South Table Mountain, 2.16 km. southeast of the GNIS location of Golden. 39.74522°N, 105.19983°W. WGS 1984 Elev. 1821 m.. With Rhus trilobata, Ambrosia psilostachya, Ericameria nauseosa, vars. nauseosa and graveolens, Alyssum simplex, Solanum elaeagnifolium, Opuntia macrorhiza, Agropyron cristatum, and Bromus tectorum.

Collected by permit: City of Golden, 2025, issued: Mar 14, 2025, to: Tom Schweich.

Tom Schweich 3449.

10-Jul-2025

Ringed milkweed beetle on Asclepias speciosa.
Ringed milkweed beetle on Asclepias speciosa.

Tuesday, 15 July 2025

Weeding at DeLong Park and Milkweed Beetles.

Locations: Parfet Open Space (City of Golden).
Spring in Parfet Open Space.
Spring in Parfet Open Space.

Wednesday, 16 July 2025

View of Parfet Open Space.

3450

Agrostis sp.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado Poaceae

Agrostis stolonifera L. Creeping Bentgrass.

Parfet Open Space (City of Golden), Jefferson County, Colorado. Western side of Parfet Open Space, about mid-slope between Welch Ditch and the houses, 1.15 km. southwest of the GNIS location of Golden. 39.74848°N, 105.23087°W. WGS 1984 Elev. 1789 m.. Small swale, with Ambrosia psilostachya, Linum sp., Bromus inermis, and Festuca sp. Designated a City of Golden Open Space in July 2025.

Collected by permit: City of Golden, 2025, issued: Mar 14, 2025, to: Tom Schweich.

Tom Schweich 3450.

16-Jul-2025

Coll. No. 3451, Juncus torreyi with gall in inflorescence.

Coll. No. 3451, Juncus torreyi.

3451

Juncus torreyi with some inflorescences containing galls caused by Livia.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado Juncaceae

Juncus torreyi Coville. Torrey's Rush.

Parfet Open Space (City of Golden), Jefferson County, Colorado. Western edge of Parfet Open Space, in still water just below a spring, 1.16 km. southwest of the GNIS location of Golden. 39.74858°N, 105.23116°W. WGS 1984 Elev. 1779 m. Normal appearing inflorescence on about half of the stems; the other half greatly deformed, likely a gall caused by Livia sp. Also collected here: Clematis ligusticifolia. Designated a City of Golden Open Space in July 2025. iNaturalist Observation 298436857.

Collected by permit: City of Golden, 2025, issued: Mar 14, 2025, to: Tom Schweich.

Tom Schweich 3451.

16-Jul-2025

Coll. No. 3451, Juncus torreyi without gall in inflorescence.

3452

Clematis ligusticifolia.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado Ranunculaceae

Clematis ligusticifolia Nutt. Western White Clematis.

Parfet Open Space (City of Golden), Jefferson County, Colorado. Western edge of Parfet Open Space, growing around a small perennial spring, 1.16 km. southwest of the GNIS location of Golden. 39.74858°N, 105.23115°W. WGS 1984 Elev. 1779 m. Also collected here: Juncus torreyi. Designated a City of Golden Open Space in July 2025.

Collected by permit: City of Golden, 2025, issued: Mar 14, 2025, to: Tom Schweich.

Tom Schweich 3452.

16-Jul-2025

Locations: North Golden Hogback Open Space (City of Golden).

Sunday, 20 July 2025

North Golden Hogback

3453

Berteroa incana.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado Brassicaceae

Berteroa incana (L.) DC. Hoary Alyssum.

North Golden Hogback Open Space (City of Golden), Jefferson County, Colorado. In the bottom of the dry wash (Cressman Gulch) that runs along the southwest side of the open space, 3.23 km. northwest of the GNIS location of Golden. 39.78134°N, 105.23851°W. WGS 1984 Elev. 1861 m. This parcel designated the North Golden Hogback Open Space in July 2025.

Collected by permit: City of Golden, 2025, issued: Mar 14, 2025, to: Tom Schweich.

Tom Schweich 3453.

20-Jul-2025

Coll. No. 3454, Poa compressa.

3454

Poa compressa.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado Poaceae

Poa compressa L. Canada Bluegrass.

North Golden Hogback Open Space (City of Golden), Jefferson County, Colorado. In the bottom of the dry wash (Cressman Gulch) that runs along the southwest side of the open space, 3.27 km. northwest of the GNIS location of Golden. 39.78164°N, 105.23873°W. WGS 1984 Elev. 1863 m. Damp soil, just below storm drain outfall, with Bouteloua gracilis and Bromus japonicus. This parcel designated the North Golden Hogback Open Space in July 2025.

Collected by permit: City of Golden, 2025, issued: Mar 14, 2025, to: Tom Schweich.

Tom Schweich 3454.

20-Jul-2025

3455

Solidago, likely S. missouriensis.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado Asteraceae

Solidago missouriensis Nutt. Missouri Goldenrod.

North Golden Hogback Open Space (City of Golden), Jefferson County, Colorado. On the lowest stream terrace of a dry wash (Cressman Gulch) that runs along the southwest side of the open space, 3.30 km. northwest of the GNIS location of Golden. 39.7819°N, 105.23888°W. WGS 1984 Elev. 1864 m. With an Opuntia (non-native), Euphorbia esula, Pediomelum tenuiflorum, Rumex crispus, and Bromus inermis. This parcel designated the North Golden Hogback Open Space in July 2025.

Collected by permit: City of Golden, 2025, issued: Mar 14, 2025, to: Tom Schweich.

Tom Schweich 3455.

20-Jul-2025

Stems, glabrous, an occasional hair here and there.
Leaves, basal withered.
- glabrous
- ciliate, otherwise entire.
- veins, #3, then reticulate.
Phyllaries
- Veins, #1

Coll. No. 3456, Salix irrorata.

3456

Salix sp.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado Salicaceae

Salix irrorata Andersson. Dewystem Willow.

North Golden Hogback Open Space (City of Golden), Jefferson County, Colorado. On the lowest stream terrace of a dry wash (Cressman Gulch) that runs along the southwest side of the open space, 3.35 km. northwest of the GNIS location of Golden. 39.78229°N, 105.23925°W. WGS 1984 Elev. 1866 m. Multi-trunk, bark light gray; pruinose twigs on previous years' growth and not on current year's growth. This parcel designated the North Golden Hogback Open Space in July 2025.

Collected by permit: City of Golden, 2025, issued: Mar 14, 2025, to: Tom Schweich.

Tom Schweich 3456.

20-Jul-2025

3457

Thelespermum megapotamicum.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado Asteraceae

Thelesperma megapotamicum (Spreng.) Kuntze. Hopi Tea Greenthread.

North Golden Hogback Open Space (City of Golden), Jefferson County, Colorado. On an upper stream terrace of a dry wash (Cressman Gulch) that runs along the southwest side of the open space, 3.35 km. northwest of the GNIS location of Golden. 39.78231°N, 105.23923°W. WGS 1984 Elev. 1868 m. With Artemisia frigida, Lupinus argenteus, and Pediomelum tenuiflorum. This parcel designated the North Golden Hogback Open Space in July 2025.

Collected by permit: City of Golden, 2025, issued: Mar 14, 2025, to: Tom Schweich.

Tom Schweich 3457.

20-Jul-2025

Other articles:
• Forest Road 211: along road;

Locations: North Twin Creek.
Syntheris plantaginea along the trail, shoulder of ridge south of North Twin Creek.

Monday, 21 July 2025

North Twin Creek

Cut-Leaf Coneflower in the creek.

Forest glade just above the forks of North Twin Creek.

View uphill on closed F. R. 541.

View downhill on closed F. R. 541.

View of location where there was Mentzelia speciosa.

3458

Koeleria macrantha.

Plants of Colorado
East Slope of Tarryall Mountains, Jefferson County Poaceae

Koeleria macrantha (Ledeb.) Schult. Prairie Junegrass.

North Twin Creek, Jefferson County, Colorado. Along a horse/cow trail on the low ridge southwest of North Twin Creek, 315 m. northwest of the crossing of North Twin Creek by F. R. 211, 6.8 mi. west and south on F. R. 211 from its north end at County Road 126, 11.6 km. southwest of Deckers. 39.20914°N, 105.34852°W. WGS 1984 Elev. 2436 m. Open forest with Pinus ponderosa, Pseudotsuga douglasii, Antennaria sp., Artemisia frigida, and Arctostaphylos uva-ursi

Collected by permit: Pike San Isabel National Forest, 2025, issued: Mar 26, 2025, to: Tom Schweich.

Tom Schweich 3458.

21-Jul-2025

Coll. No. 3458.1, Pseudoroegneria spicata.

3458.1

Rhizomatous grass.

Plants of Colorado
East Slope of Tarryall Mountains, Jefferson County Poaceae

Pseudoroegneria spicata (Pursh) A. Löve. Bluebunch Wheat Grass.

North Twin Creek, Jefferson County, Colorado. Along a horse/cow trail on the low ridge southwest of North Twin Creek, 315 m. northwest of the crossing of North Twin Creek by F. R. 211, 6.8 mi. west and south on F. R. 211 from its north end at County Road 126, 11.6 km. southwest of Deckers. 39.20914°N, 105.34852°W. WGS 1984 Elev. 2436 m. Rhizomatous, 2-sided spike, 1 spikelet per node, little overlap, lemma awn divergent when dry. Open forest with Pinus ponderosa, Pseudotsuga menziesii, Antennaria sp., Artemisia frigida, Arctostaphylos uva-ursi, and Koeleria macrantha.

Collected by permit: Pike San Isabel National Forest, 2025, issued: Mar 26, 2025, to: Tom Schweich.

Tom Schweich 3458.1

21-Jul-2025

Coll. No. 3458.1, 21 July 2025, characters observed: Perennial grass, to 40 cm., rhizomatous, glabrous throughout; Inflorescence, 2-sided spike; Spikelets, 1 per node, flatside to rachis, sessile, overlap 28%; Disarticulation, above the glumes; Glumes, lanceolate, rolled, lower glume, 8 mm., veins 3 (not symmetric), short tip, upper glume, 9 mm., veins 4 (visible, not symmetric) awn 1 mm.; Lemma 10 mm., veins 5, awn 10 mm. divergent when dry; Palea, 9 mm.

3459

Allium cernuum.

Plants of Colorado
East Slope of Tarryall Mountains, Jefferson County Alliaceae

Allium cernuum Roth. Nodding Onion.

North Twin Creek, Jefferson County, Colorado. Along a fading horse/cow trail on the ridge southwest of North Twin Creek, about 375 m. northwest of the crossing of North Twin Creek by F. R. 211, 6.8 mi. west and south on F. R. 211 from its north end at County Road 126, 11.6 km. southwest of Deckers. 39.20954°N, 105.34902°W. WGS 1984 Elev. 2438 m. Openings in Douglas fir and ponderosa pine woodland. Within the perimeter of the Hayman Fire (2002). This area mapped as unburned though there are some charred stumps and down logs.

Collected by permit: Pike San Isabel National Forest, 2025, issued: Mar 26, 2025, to: Tom Schweich.

Tom Schweich 3459.

21-Jul-2025

3460

Achillea millefolium.

Plants of Colorado
East Slope of Tarryall Mountains, Jefferson County Asteraceae

Achillea millefolium L. Common Yarrow.

North Twin Creek, Jefferson County, Colorado. Along a fading horse/cow trail on the ridge southwest of North Twin Creek, about 435 m. northwest of the crossing of North Twin Creek by F. R. 211, 6.8 mi. west and south on F. R. 211 from its north end at County Road 126, 11.6 km. southwest of Deckers. 39.20991°N, 105.34959°W. WGS 1984 Elev. 2444 m. Open ponderosa pine and Douglas fir forest, with Juniperus communis, Apocynum androsaemifolium, Achillea millefolium, Arctostaphylos uva-ursi and Elymus elymoides. Within the perimeter of the Hayman Fire (2002). This area mapped as unburned though there are some charred stumps and down logs.

Collected by permit: Pike San Isabel National Forest, 2025, issued: Mar 26, 2025, to: Tom Schweich.

Tom Schweich 3460.

21-Jul-2025

3461

Arctostaphylos uva-ursi.

Plants of Colorado
East Slope of Tarryall Mountains, Jefferson County Ericaceae

Arctostaphylos uva-ursi (L.) Sprengel. Bearberry.

North Twin Creek, Jefferson County, Colorado. Along a fading horse/cow trail on the ridge southwest of North Twin Creek, about 435 m. northwest of the crossing of North Twin Creek by F. R. 211, 6.8 mi. west and south on F. R. 211 from its north end at County Road 126, 11.6 km. southwest of Deckers. 39.20987°N, 105.34965°W. WGS 1984 Elev. 2447 m. At the base of small Douglas fir in open ponderosa pine and Douglas fir forest, with Juniperus communis, Achillea millefolium, Apocynum androsaemifolium, Achillea millefolium, and Elymus elymoides. Within the perimeter of the Hayman Fire (2002). This area mapped as unburned though there are some charred stumps and down logs.

Collected by permit: Pike San Isabel National Forest, 2025, issued: Mar 26, 2025, to: Tom Schweich.

Tom Schweich 3461.

21-Jul-2025

3461.1

Androsace sp.

Plants of Colorado
East Slope of Tarryall Mountains, Jefferson County Primulaceae

Androsace septentrionalis L. Pygmyflower Rockjasmine.

North Twin Creek, Jefferson County, Colorado. Along a fading horse/cow trail on the ridge southwest of North Twin Creek, about 435 m. northwest of the crossing of North Twin Creek by F. R. 211, 6.8 mi. west and south on F. R. 211 from its north end at County Road 126, 11.6 km. southwest of Deckers. 39.20987°N, 105.34965°W. WGS 1984 Elev. 2447 m. At the base of small Douglas fir in open ponderosa pine and Douglas fir forest, with Juniperus communis, Achillea millefolium, Apocynum androsaemifolium, Achillea millefolium, and Elymus elymoides. Within the perimeter of the Hayman Fire (2002). This area mapped as unburned though there are some charred stumps and down logs.

Collected by permit: Pike San Isabel National Forest, 2025, issued: Mar 26, 2025, to: Tom Schweich.

Tom Schweich 3461.1

21-Jul-2025

Coll. No. 3462, Apocynum androsaemifolium.

3462

Apocynum sp., probably A. androsaemifolium.

Plants of Colorado
East Slope of Tarryall Mountains, Jefferson County Apocynaceae

Apocynum androsaemifolium L. Bitter Dogbane.

North Twin Creek, Jefferson County, Colorado. Along a fading horse/cow trail on the ridge southwest of North Twin Creek, about 435 m. northwest of the crossing of North Twin Creek by F. R. 211, 6.8 mi. west and south on F. R. 211 from its north end at County Road 126, 11.6 km. southwest of Deckers. 39.20989°N, 105.34963°W. WGS 1984 Elev. 2444 m. Leaves drooping. Many small plants here, but very few with flowers. Open ponderosa pine and Douglas fir forest, with Juniperus communis, Achillea millefolium, Arctostaphylos uva-ursi, Androsace septentrionalis, and Elymus elymoides. Within the perimeter of the Hayman Fire (2002). This area mapped as unburned though there are some charred stumps and down logs.

Collected by permit: Pike San Isabel National Forest, 2025, issued: Mar 26, 2025, to: Tom Schweich.

Tom Schweich 3462.

21-Jul-2015

3463

Elymus elymoides.

Plants of Colorado
East Slope of Tarryall Mountains, Jefferson County Poaceae

Elymus elymoides (Raf.) Swezey. Squirreltail Grass.

North Twin Creek, Jefferson County, Colorado. Along a fading horse/cow trail on the ridge southwest of North Twin Creek, about 435 m. northwest of the crossing of North Twin Creek by F. R. 211, 6.8 mi. west and south on F. R. 211 from its north end at County Road 126, 11.6 km. southwest of Deckers. 39.20993°N, 105.34966°W. WGS 1984 Elev. 2444 m. Open ponderosa pine and Douglas fir forest, with Juniperus communis, Achillea millefolium, Arctostaphylos uva-ursi, Androsace septentrionalis, and Apocynum androsaemifolium. Within the perimeter of the Hayman Fire (2002). This area mapped as unburned though there are some charred stumps and down logs.

Collected by permit: Pike San Isabel National Forest, 2025, issued: Mar 26, 2025, to: Tom Schweich.

Tom Schweich 3463.

21-Jul-2025

3464

Rubus idaeus.

Plants of Colorado
East Slope of Tarryall Mountains, Jefferson County Rosaceae

Rubus idaeus L. var. strigosus (Michx.) Maxim. American Red Raspberry.

North Twin Creek, Jefferson County, Colorado. In a forest glade where two branches join North Twin Creek, about 610 m. northwest of the crossing of North Twin Creek by F. R. 211, 6.8 mi. west and south on F. R. 211 from its north end at County Road 126, 11.7 km. southwest of Deckers. 39.21136°N, 105.3508°W. WGS 1984 Elev. 2453 m. Small patch in mature Douglas fir and ponderosa pine forest, with Achillea millefolium, Cirsium arvense, Erigeron speciosus, Gaillardia aristata, Monarda fistulosa, Verbascum thapsus, and Bromus porteri. This area mapped as unburned within the perimeter of the Hayman Fire (2002).

Collected by permit: Pike San Isabel National Forest, 2025, issued: Mar 26, 2025, to: Tom Schweich.

Tom Schweich 3464.

21-Jul-2025

Perennial
- without stolons
- slender prickles
- stipitate glandular
Leaves
- compound, ternate
- adaxial, green
- abaxial, gray
- margins, serrate
Flowers
- without bracteoles
Petals -- unknown

3465

Plants of Colorado
East Slope of Tarryall Mountains, Jefferson County Asteraceae

Erigeron subtrinervis Rydb. ex Porter & Britton. Threenerve Daisy.

North Twin Creek, Jefferson County, Colorado. In a forest glade where two branches join North Twin Creek, about 610 m. northwest of the crossing of North Twin Creek by F. R. 211, 6.8 mi. west and south on F. R. 211 from its north end at County Road 126, 11.7 km. southwest of Deckers. 39.21144°N, 105.3508°W. WGS 1984 Elev. 2451 m. Small patch in mature Douglas fir and ponderosa pine forest, with Achillea millefolium, Cirsium arvense, Erigeron speciosus, Gaillardia aristata, Monarda fistulosa, Verbascum thapsus, and Bromus porteri. This area mapped as unburned within the perimeter of the Hayman Fire (2002).

Collected by permit: Pike San Isabel National Forest, 2025, issued: Mar 26, 2025, to: Tom Schweich.

Tom Schweich 3465.

21-Jul-2025

Coll. No. 3465 21 July 2025, characters observed: Perennial, to 40 cm.; Stem strigose, distally stipitate-glandular; Leaves, basal withered, cauline, alternate, sessile, bases auriculate, 56 mm. × 16 mm. wide, length 3.5× width, strigose, eglandular, margins ciliate, tips acute, not spinulose; Involucre, 5 mm. × 10 mm. wide; Phyllaries, in 3 series, ±equal, 5 mm. × 0.8 mm. wide, outer green, inner chartaceous, outer hairy and minutely stipitate glandular; Receptacle, epaleate; Rays, tube 3 mm. + blade 8 mm. × 0.8 mm. wide, blue; Disk flowers, many, tube 3 mm. + lobes 0.3 mm., yellow; Pappus, 2 series, outer low crown 0.2 mm., inner bristles 2.5 mm.;

3466

Heterotheca foliolosa.

Plants of Colorado
East Slope of Tarryall Mountains, Jefferson County Asteraceae

Heterotheca foliosa (Nutt.) Shinners. Hairy False Goldenaster.

North Twin Creek, Jefferson County, Colorado. In a forest glade where two branches join North Twin Creek, about 670 m. northwest of the crossing of North Twin Creek by F. R. 211, 6.8 mi. west and south on F. R. 211 from its north end at County Road 126, 11.7 km. southwest of Deckers. 39.21208°N, 105.3509°W. WGS 1984 Elev. 2449 m. Forest floor, tall ponderosa pine and Douglas fir that appear to have survived the Hayman Fire (2002)

Collected by permit: Pike San Isabel National Forest, 2025, issued: Mar 26, 2025, to: Tom Schweich.

Tom Schweich 3466.

21-Jul-2025

3467

Bromus, nodding inflorescence, soft hairy spikelets.

Plants of Colorado
East Slope of Tarryall Mountains, Jefferson County Poaceae

Bromus porteri (J.M. Coult.) Nash. Nodding Brome.

North Twin Creek, Jefferson County, Colorado. In a forest glade where two branches join North Twin Creek, about 700 m. northwest of the crossing of North Twin Creek by F. R. 211, 6.8 mi. west and south on F. R. 211 from its north end at County Road 126, 11.7 km. southwest of Deckers. 39.2124°N, 105.35108°W. WGS 1984 Elev. 2447 m. Forest floor among tall conifers, mostly ponderosa pine, with Bromus tectorum. Within the perimeter of the Hayman Fire (2002), fire intensity mapped as low at this location.

Collected by permit: Pike San Isabel National Forest, 2025, issued: Mar 26, 2025, to: Tom Schweich.

Tom Schweich 3467.

21-Jul-2025

3468

Anticlea elegans.

Plants of Colorado
East Slope of Tarryall Mountains, Jefferson County Melanthiaceae

Anticlea elegans (Pursh) Rydb. Mountain Death Camas.

North Twin Creek, Jefferson County, Colorado. In a forest glade where two branches join North Twin Creek, about 700 m. northwest of the crossing of North Twin Creek by F. R. 211, 6.8 mi. west and south on F. R. 211 from its north end at County Road 126, 11.7 km. southwest of Deckers. 39.21297°N, 105.35207°W. WGS 1984 Elev. 2460 m. Shaded forest of mostly mature Douglas fir, forest floor with aspen, roses, and geranium; also collected here: Heracleum maximum. Within the perimeter of the Hayman Fire (2002), with fire intensity mapped as low at this location.

Collected by permit: Pike San Isabel National Forest, 2025, issued: Mar 26, 2025, to: Tom Schweich.

Tom Schweich 3468.

21-Jul-2025

3469

Heracleum maximum.

Plants of Colorado
East Slope of Tarryall Mountains, Jefferson County Apiaceae

Heracleum maximum Bartr. Common Cow Parsnip.

North Twin Creek, Jefferson County, Colorado. In a forest glade where two branches join North Twin Creek, about 700 m. northwest of the crossing of North Twin Creek by F. R. 211, 6.8 mi. west and south on F. R. 211 from its north end at County Road 126, 11.7 km. southwest of Deckers. 39.21296°N, 105.35214°W. WGS 1984 Elev. 2464 m. Shaded forest of mostly mature Douglas fir, forest floor with aspen, roses, and geraniums; also collected here: Anticlea elegans. Within the perimeter of the Hayman Fire (2002), with fire intensity mapped as low at this location.

Collected by permit: Pike San Isabel National Forest, 2025, issued: Mar 26, 2025, to: Tom Schweich.

Tom Schweich 3469.

21-Jul-2025

View across North Twin Creek just above the forks.

Coll. No. 3470, Holodiscus discolor var. microphyllus.

3470

Holodiscus sp.

Plants of Colorado
East Slope of Tarryall Mountains, Jefferson County Rosaceae

Holodiscus discolor (Pursh) Maxim. var. microphyllus (Rydb.) Jeps. Ocean Spray.

North Twin Creek, Jefferson County, Colorado. Base of boulder near where two branches join North Twin Creek, about 860 m. northwest of the crossing of North Twin Creek by F. R. 211, 6.8 mi. west and south on F. R. 211 from its north end at County Road 126, 11.7 km. southwest of Deckers. 39.21292°N, 105.35295°W. WGS 1984 Elev. 2472 m. Late in bloom. Mature, burned stumps and down trunks, and immature ponderosa pine and Douglas fir, with some aspens. Within the perimeter of the Hayman Fire (2002), mapping shows this location on the boundary between unburned and low intensity fire. Coordinates estimated from nearby collections. Determination per Ackerfield (2022).

Collected by permit: Pike San Isabel National Forest, 2025, issued: Mar 26, 2025, to: Tom Schweich.

Tom Schweich 3470.

21-Jul-2025

3471

Solidago sp.

Plants of Colorado
East Slope of Tarryall Mountains, Jefferson County Asteraceae

Solidago missouriensis Nutt. Missouri Goldenrod.

North Twin Creek, Jefferson County, Colorado. Beside boulder near where two branches join North Twin Creek, about 860 m. northwest of the crossing of North Twin Creek by F. R. 211, 6.8 mi. west and south on F. R. 211 from its north end at County Road 126, 11.7 km. southwest of Deckers. 39.21293°N, 105.35296°W. WGS 1984 Elev. 2472 m. Mature, burned stumps and down trunks, and immature ponderosa pine and Douglas fir, with some aspens. Within the perimeter of the Hayman Fire (2002), mapping shows this location on the boundary between unburned and low intensity fire.

Collected by permit: Pike San Isabel National Forest, 2025, issued: Mar 26, 2025, to: Tom Schweich.

Tom Schweich 3471.

31-Jul-2025

3472

Arctostaphylos uva-ursi.

Plants of Colorado
East Slope of Tarryall Mountains, Jefferson County Ericaceae

Arctostaphylos uva-ursi (L.) Sprengel. Bearberry.

North Twin Creek, Jefferson County, Colorado. Slope south of North Twin Creek, about 815 m. northwest of the crossing of North Twin Creek by F. R. 211, 6.8 mi. west and south on F. R. 211 from its north end at County Road 126, 11.7 km. southwest of Deckers. 39.21217°N, 105.353°W. WGS 1984 Elev. 2483 m. Small trees in an open ponderosa pine forest. This area mapped as unburned within the perimeter of the Hayman Fire (2002).

Collected by permit: Pike San Isabel National Forest, 2025, issued: Mar 26, 2025, to: Tom Schweich.

Tom Schweich 3472.

21-Jul-2025

Locations: Grampsas North Open Space (City of Golden).
View of Grampsas North Open Space from the south end.
View of Grampsas North Open Space from the north end.

Friday, 25 July 2025

Coll. No. 3473, Juniperis scopulorum.

3473

Juniperus scopulorum ?

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado Cupressaceae

Juniperus scopulorum Sarg. Rocky Mountain Juniper.

Grampsas North Open Space (City of Golden), Jefferson County, Colorado. Northern portion of the Tony Grampsas Memorial Sports Complex, northeast slope of small alluvial hill, southeast side of North Table Mountain, 4.02 km. (geodesic) northeast of the GNIS location of Golden. 39.78112°N, 105.18784°W. WGS 1984 Elev. 1743 m. Sole shrub on north slope, with Artemisia dracunculus, Mirabilis linearis, Eriogonum alatum, and Elymus elymoides. This area was designated a City of Golden open space in 2025.

Collected by permit: City of Golden, 2025, issued: Mar 14, 2025, to: Tom Schweich.

Tom Schweich 3473.

25-Jul-2025

Coll. No. 3473, characters observed: Small tree, 1.5 m., ±upright, with whip-like branches, Leaves, 2 kinds, overlap, very little <¼, margins, entire, gland < distance to apex; Cones, terminal, all of one size (implies cones maturing in one year).

The alternative would be J. virginiana or perhaps J. scopulorum × virginiana.

Coll. No. 3474, Physalis longifolia.

3474

Solanum longifolia.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado Solanaceae

Physalis longifolia Nutt. Longleaf Groundcherry.

Grampsas North Open Space (City of Golden), Jefferson County, Colorado. Northern portion of the Tony Grampsas Memorial Sports Complex, against the north fence, 4.23 km. northeast of the GNIS location of Golden. 39.78355°N, 105.18764°W. WGS 1984 Elev. 1731 m. Also here or nearby: Cirsium arvense, Onopordum acanthium, Symphyotrichum ericoides, Nepeta cataria, Elaeagnus angustifolia, Ailanthus altissima, and Bromus inermis. This area was designated a City of Golden open space in 2025.

Collected by permit: City of Golden, 2025, issued: Mar 14, 2025, to: Tom Schweich.

Tom Schweich 3474.

25-Jul-2025

Coll. No. 3475, Physalis hederifolia.

3475

Physalis hederifolia.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado Solanaceae

Physalis hederifolia A. Gray. Ivy-Leaved Ground Cherry.

Grampsas North Open Space (City of Golden), Jefferson County, Colorado. Approximate center of the open space, northern portion of the Tony Grampsas Memorial Sports Complex, 4.11 km. (geodesic) northeast of the GNIS location of Golden. 39.78215°N, 105.18775°W. WGS 1984 Elev. 1733 m. With Ambrosia psilostachya, many Ericameria nauseosa var. graveolens, Chenopodium album, and Bromus japonicus. This area was designated a City of Golden open space in 2025.

Collected by permit: City of Golden, 2025, issued: Mar 14, 2025, to: Tom Schweich.

Tom Schweich 3475.

25-Jul-2025

Locations: Grampsas North Open Space (City of Golden).
Obs. No. 4302, Juglans nigra fruit.
Obs. No. 4302, Juglans nigra leaf.

~~Xanthoceras sorbifolium~~ Juglans nigra “Black Walnut”

Obs. No. 4302, Juglans nigra in Grampsas North Open Space.

Obs. No. 4312, Cylindropuntia imbricata.

Cylindropuntia imbricata.

Locations: Coal Creek. Coal Creek Canyon Study Area, Lacey Parcel.
Coal Creek flow in late July.

Monday, 28 July 2025

Coll. No. 3476, Eriogonum arcuatum var. arcuatum.

3476

Eriogonum arcuatum.

Plants of the Coal Creek Canyon Study Area
Jefferson County Open Space, Colorado, USA Polygonaceae

Eriogonum arcuatum Greene, Pittonia. 4: 319. 1901. var. arcuatum. Baker's Buckwheat.

Coal Creek Canyon Study Area, Lacey Parcel, Jefferson County, Colorado. North side of Coal Creek, south-facing bank between Colorado State Highway 72 “Coal Creek Canyon Road” and the creek, 1.47 km. northwest of Coal Creek Fire Station #3, 1.51 km. north northwest of Golden. 39.87943°N, 105.29285°W. WGS 1984 Elev. 2065 m. Openings in Pinus ponderosa woodland, with Artemisia ludoviciana, Lactuca sp., Penstemon virens, Cercocarpus montanus, Acer glabrum, Bouteloua gracilis, and Koeleria macrantha,

Collected by permit: Jefferson County Open Space, 2025, issued: May 1, 2025, to: Tom Schweich.

Tom Schweich 3476.

28-Jul-2025

3477

Bouteloua gracilis.

Plants of the Coal Creek Canyon Study Area
Jefferson County Open Space, Colorado, USA Poaceae

Bouteloua gracilis (Kunth) Lag. ex Griffiths. Blue Grama.

Coal Creek Canyon Study Area, Lacey Parcel, Jefferson County, Colorado. North side of Coal Creek, south-facing bank between Colorado State Highway 72 “Coal Creek Canyon Road” and the creek, 1.47 km. northwest of Coal Creek Fire Station #3, 1.51 km. north northwest of Golden. 39.87945°N, 105.29283°W. WGS 1984 Elev. 2065 m. Openings in Pinus ponderosa woodland, with Artemisia ludoviciana, Lactuca sp., Penstemon virens, Eriogonum arcuatum, Cercocarpus montanus, Acer glabrum,, and Koeleria macrantha,

Collected by permit: Jefferson County Open Space, 2025, issued: May 1, 2025, to: Tom Schweich.

Tom Schweich 3477.

28-Jul-2025

Coll. No. 3478, Lactuca serriola.

3478

Lactuca sp., maybe L. ludoviciana.

Plants of the Coal Creek Canyon Study Area
Jefferson County Open Space, Colorado, USA Asteraceae

Lactuca serriola L. Prickly Lettuce.

Coal Creek Canyon Study Area, Lacey Parcel, Jefferson County, Colorado. North side of Coal Creek, south-facing bank between Colorado State Highway 72 “Coal Creek Canyon Road” and the creek, 1.47 km. northwest of Coal Creek Fire Station #3, 1.51 km. north northwest of Golden. 39.87947°N, 105.29293°W. WGS 1984 Elev. 2060 m. Leaf margin and abaxial midrib prickly; flowers yellow, cypselae 4-6 nerves per face. Openings in Pinus ponderosa woodland, with Artemisia ludoviciana, Penstemon virens, Eriogonum arcuatum, Cercocarpus montanus, Acer glabrum, Bouteloua gracilis, and Koeleria macrantha,

Collected by permit: Jefferson County Open Space, 2025, issued: May 1, 2025, to: Tom Schweich.

Tom Schweich 3478.

28-Jul-2025

3479

Anaphalis margaritacea as a WAG.

Plants of the Coal Creek Canyon Study Area
Jefferson County Open Space, Colorado, USA Asteraceae

Pseudognaphalium macounii (Greene) Kartesz. Macoun’s Rabbit-Tobacco.

Coal Creek Canyon Study Area, Lacey Parcel, Jefferson County, Colorado. North side of Coal Creek, stream terrace between Colorado State Highway 72 “Coal Creek Canyon Road” and the creek, 1.77 km. northwest of Coal Creek Fire Station #3, 15.1 km. north northwest of Golden. 39.87982°N, 105.29384°W. WGS 1984 Elev. 2058 m. Ponderosa pine forest floor.

Collected by permit: Jefferson County Open Space, 2025, issued: May 1, 2025, to: Tom Schweich.

Tom Schweich 3479.

28-Jul-2025

3480

Lysimachia ciliata.

Plants of the Coal Creek Canyon Study Area
Jefferson County Open Space, Colorado, USA Primulaceae

Lysimachia ciliata L. Fringed Loosestrife.

Coal Creek Canyon Study Area, Lacey Parcel, Jefferson County, Colorado. Right bank of Coal Creek, below Highway 72 “Coal Creek Canyon Road” 1.60 km. northwest of Coal Creek Fire Station #3, 15.2 km. north northwest of Golden. 39.87998°N, 105.29417°W. WGS 1984 Elev. 2061 m. Flowers yellow. Base of willow on bank of creek.

Collected by permit: Jefferson County Open Space, 2025, issued: May 1, 2025, to: Tom Schweich.

Tom Schweich 3480.

28-Jul-2025

3480.1

Cirsium arvense.

Plants of the Coal Creek Canyon Study Area
Jefferson County Open Space, Colorado, USA Asteraceae

Cirsium arvense (L.) Scop. Canada Thistle.

Coal Creek Canyon Study Area, Lacey Parcel, Jefferson County, Colorado. Right bank of Coal Creek, below Highway 72 “Coal Creek Canyon Road” 1.60 km. northwest of Coal Creek Fire Station #3, 15.2 km. north northwest of Golden. 39.87998°N, 105.29418°W. WGS 1984 Elev. 2061 m. Among willows and boulders along creek.

Collected by permit: Jefferson County Open Space, 2025, issued: May 1, 2025, to: Tom Schweich.

Tom Schweich 3480.1

28-Jul-2025

3481

Solidago, probably S. gigantea.

Plants of the Coal Creek Canyon Study Area
Jefferson County Open Space, Colorado, USA Asteraceae

Solidago gigantea Aiton. Giant Goldenrod.

Coal Creek Canyon Study Area, Lacey Parcel, Jefferson County, Colorado. Left bank of Coal Creek, below Highway 72 “Coal Creek Canyon Road” 1.52 km. northwest of Coal Creek Fire Station #3, 15.0 km. north northwest of Golden. 39.87885°N, 105.29388°W. WGS 1984 Elev. 2055 m. In willows and cottonwoods on left bank of creek

Collected by permit: Jefferson County Open Space, 2025, issued: May 1, 2025, to: Tom Schweich.

Tom Schweich 3481.

28-Jul-2025

3482

Schoenoplectus tabernaemontani.

Plants of the Coal Creek Canyon Study Area
Jefferson County Open Space, Colorado, USA Cyperaceae

Schoenoplectus tabernaemontani (C.C.Gmel.) Palla. Softstem Bulrush.

Collected by permit: Jefferson County Open Space, 2025, issued: May 1, 2025, to: Tom Schweich.

Tom Schweich 3482.

28-Jul-2025

3483

Silene latifolia.

Plants of the Coal Creek Canyon Study Area
Jefferson County Open Space, Colorado, USA Caryophyllaceae

Silene latifolia Poir. Bladder Campion.

Coal Creek Canyon Study Area, Lacey Parcel, Jefferson County, Colorado. Left bank of Coal Creek, below Highway 72 “Coal Creek Canyon Road” 1.50 km. northwest of Coal Creek Fire Station #3, 15.0 km. north northwest of Golden. 39.87862°N, 105.29372°W. WGS 1984 Elev. 2053 m. Gravel bench with Arctium minus, Cichorium intybus, Pericome caudata, Campanula rapunculoides, Oenothera villosa, and Bromus inermis This area looks like it was scoured out by a flood, perhaps that of September 2013.

Collected by permit: Jefferson County Open Space, 2025, issued: May 1, 2025, to: Tom Schweich.

Tom Schweich 3483.

28-Jul-2025

Coll. No. 3484, Campanula rapunculoides.

3484

Campanula rapunculoides.

Plants of the Coal Creek Canyon Study Area
Jefferson County Open Space, Colorado, USA Campanulaceae

Campanula rapunculoides L. Rampion Bellflower.

Coal Creek Canyon Study Area, Lacey Parcel, Jefferson County, Colorado. Left bank of Coal Creek, below Highway 72 “Coal Creek Canyon Road” 1.49 km. northwest of Coal Creek Fire Station #3, 15.0 km. north northwest of Golden. 39.87868°N, 105.29356°W. WGS 1984 Elev. 2057 m. In a thicket of Salix exigua on bank of creek. EDDMapS Record ID 13437903.

Collected by permit: Jefferson County Open Space, 2025, issued: May 1, 2025, to: Tom Schweich.

Tom Schweich 3484.

28-Jul-2025

3485

Bromus porteri.

Plants of the Coal Creek Canyon Study Area
Jefferson County Open Space, Colorado, USA Poaceae

Bromus porteri (J.M. Coult.) Nash. Nodding Brome.

Coal Creek Canyon Study Area, Lacey Parcel, Jefferson County, Colorado. Mid-slope below Highway 72 “Coal Creek Canyon Road” and above Coal Creek, 1.41 km. northwest of Coal Creek Fire Station #3, 15.0 km. north northwest of Golden. 39.8788°N, 105.29243°W. WGS 1984 Elev. 2057 m. Hillslope with ponderosa pines.

Collected by permit: Jefferson County Open Space, 2025, issued: May 1, 2025, to: Tom Schweich.

Tom Schweich 3485.

28-Jul-2025

Coll.No. 3485, Daucus carota.

3486

Daucus carota

Plants of the Coal Creek Canyon Study Area
Jefferson County Open Space, Colorado, USA Apiaceae

Daucus carota L. Wild Carrot, Queen Ann's Lace.

Coal Creek Canyon Study Area, Lacey Parcel, Jefferson County, Colorado. Roadside ditch along Colorado Highway 72 “Coal Creek Canyon Road,” 2.15 km. northwest of Coal Creek Fire Station #3, 15.6 km. north northwest of Golden. 39.88224°N, 105.29985°W. WGS 1984 Elev. 2090 m.

Collected by permit: Jefferson County Open Space, 2025, issued: May 1, 2025, to: Tom Schweich.

Tom Schweich 3486.

28-Jul-2025

Locations: Parfet Open Space (City of Golden).
Juncus torreyi infected with Livia sp.

Friday, 15 August 2025

Parfet Open Space

Coll. No. 3487, Krascheninnikovia lanata.

3487

Kraschinnikovia lanata.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado Chenopodiaceae

Krascheninnikovia lanata (Pursh) A. D. J. Meeuse & Smit. Winter Fat.

Parfet Open Space (City of Golden), Jefferson County, Colorado. North-facing slope between Parfet Estates and US Highway 6, about mid-slope between the Welch Ditch and the houses, 1.1km. (geodesic) southwest of the GNIS location of Golden. 39.74875°N, 105.23082°W. WGS 1984 Elev. 1776 m. Staminate and pistillate plants. Also here: Juniperus virginiana, Ericameria nauseosa var. nauseosa, Gutierrezia sarothrae, Elaeagnus angustifolia, Oenothera howardii, Andropogon gerardii, Bouteloua curtipendula, and Nassela viridula. This parcel was designated a City of Golden open space in 2025.

Collected by permit: City of Golden, 2025, issued: Mar 14, 2025, to: Tom Schweich.

Tom Schweich, with Nico Albaladejo 3487.

15-Aug-2025

Other articles:
• Forest Road 211: along road.; at spring; at camp site;

Locations: North Twin Creek. Tarryall Mountains, East Slope.
East slope of Tarryall Mountains from Camp Site 8.

Monday, 18 August 2025

FR 211 from above, just north of the spring.

View to the south from Camp Site 8

Spring on the side of F. R. 211.

Coll. No. 3488, Artemisia ludoviciana var. incompta.

3488

Artemisia ludoviciana.

Plants of Colorado Asteraceae

Artemisia ludoviciana Nutt. ssp. incompta (Nutt.) D. D. Keck. White Sagebrush.

North Twin Creek, Jefferson County, Colorado. East slope of Tarryall Mountains, small ridge above Forest Road 211 and North Twin Creek, along a horse or cow trail, 11.3 km. (geodesic) southwest of Deckers. 39.21016°N, 105.344°W. WGS 1984 Elev. 2459 m. Small plants; leaves deeply parted. In grus with Pseudotsuga menziesii, Artemisia frigida, Ribes cereum, and Cercocarpus montanus.

Collected by permit: Pike San Isabel National Forest, 2025, issued: Mar 26, 2025, to: Tom Schweich.

Tom Schweich 3488.

18-Aug-2025

Coll. No. 3489, Amaranthus powellii.

3489

Amaranth sp.

Plants of Colorado
East Slope of Tarryall Mountains, Jefferson County Amaranthaceae

Amaranthus powellii S. Watson. Powell's Pigweed.

North Twin Creek, Jefferson County, Colorado. East slope of Tarryall Mountains, small ridge above Forest Road 211 and North Twin Creek, along a horse or cow trail, 11.3 km. (geodesic) southwest of Deckers. 39.2102°N, 105.34408°W. WGS 1984 Elev. 2461 m. In grus with Pseudotsuga menziesii, Artemisia frigida, A. ludoviciana var. incompta, Ribes cereum, and Cercocarpus montanus.

Collected by permit: Pike San Isabel National Forest, 2025, issued: Mar 26, 2025, to: Tom Schweich.

Tom Schweich 3489.

18-Aug-2025

Coll. No. 3489.1, Dieteria bigelovii var. bigelovii.

3489.1

Dieteria bigelovii

Plants of Colorado
East Slope of Tarryall Mountains, Jefferson County Asteraceae

Dieteria bigelovii (A. Gray) D. R. Morgan & R. L. Hartman var. bigelovii. Bigelow's Tansy Aster.

North Twin Creek, Jefferson County, Colorado. East slope of Tarryall Mountains, small ridge above Forest Road 211 and North Twin Creek, along a horse or cow trail, 11.3 km. (geodesic) southwest of Deckers. 39.2102°N, 105.34409°W. WGS 1984 Elev. 2461 m. In grus with Pseudotsuga menziesii, Amaranthus powellii, Artemisia frigida, Ribes cereum, and Cercocarpus montanus. This area burned in the Hayman Fire of 2002.

Collected by permit: Pike San Isabel National Forest, 2025, issued: Mar 26, 2025, to: Tom Schweich.

Tom Schweich 3489.1

18-Aug-2025

Coll. No. 3490, Pseudognaphalium macounii

3490

Anaphalis or Pseudognaphalium

Plants of Colorado
East Slope of Tarryall Mountains, Jefferson County Asteraceae

Pseudognaphalium macounii (Greene) Kartesz. Macoun’s Rabbit-Tobacco.

North Twin Creek, Jefferson County, Colorado. East slope of Tarryall Mountains, small ridge above Forest Road 211 and North Twin Creek, along a horse or cow trail, 11.3 km. (geodesic) southwest of Deckers. 39.21017°N, 105.34511°W. WGS 1984 Elev. 2480 m. In bowl of grus between outctops of Pikes Peak granite, with Juniperus communis, Pseudotsuga menziesii, Aletes anisatus, Paronychia jamesii, Ribes cereum, Jamesia americana, and Muhlenbergia montana. This area burned in the Hayman Fire of 2002.

Collected by permit: Pike San Isabel National Forest, 2025, issued: Mar 26, 2025, to: Tom Schweich.

Tom Schweich 3490.

18-Aug-2025

Other articles:
• Notes on Colorado Flora: Aletes anisatus;
Bowl of grus with Coll. No. 3491, Aletes anisatus.
Coll. No. 3491, Aletes anisatus.

3491

Aletes anisatus

Plants of Colorado
East Slope of Tarryall Mountains, Jefferson County Apiaceae

Aletes anisatus (A. Gray) W. L. Theob. & C. C. Tseng. Anise Indian Parsley.

North Twin Creek, Jefferson County, Colorado. East slope of Tarryall Mountains, small ridge above Forest Road 211 and North Twin Creek, along a horse or cow trail, 11.3 km. (geodesic) southwest of Deckers. 39.21026°N, 105.34511°W. WGS 1984 Elev. 2478 m. Strong odor of anise when collected; in fruit, well past flowering in mid-August. In bowl of grus between outctops of Pikes Peak granite, with Juniperus communis, Pseudotsuga menziesii, Pseudognaphalium macounii, Paronychia jamesii, Ribes cereum, Jamesia americana, and Muhlenbergia montana. This area burned in the Hayman Fire of 2002.

Collected by permit: Pike San Isabel National Forest, 2025, issued: Mar 26, 2025, to: Tom Schweich.

Tom Schweich 3491.

18-Aug-2025

Coll. No. 3491, Aletes anisatus.

3492

Muhlenbergia montana

Plants of Colorado
East Slope of Tarryall Mountains, Jefferson County Poaceae

Muhlenbergia montana (Nutt.) Hitchc. Mountain Muhly.

North Twin Creek, Jefferson County, Colorado. East slope of Tarryall Mountains, small ridge above Forest Road 211 and North Twin Creek, along a horse or cow trail, 11.3 km. (geodesic) southwest of Deckers. 39.21022°N, 105.34508°W. WGS 1984 Elev. 2477 m. In bowl of grus between outctops of Pikes Peak granite, with Juniperus communis, Pseudotsuga menziesii, Aletes anisatus, Paronychia jamesii, Ribes cereum, and Jamesia americana. This area burned in the Hayman Fire of 2002.

Collected by permit: Pike San Isabel National Forest, 2025, issued: Mar 26, 2025, to: Tom Schweich.

Tom Schweich 3492.

18-Aug-2025

Coll. No. 3493, Mentzelia speciosa.

Coll. No. 3492, Mentzelia speciosa.

3493

Mentzelia speciosa

Plants of Colorado
East Slope of Tarryall Mountains, Jefferson County Loasaceae

Mentzelia speciosa Osterh. Plains Blazing Star.

North Twin Creek, Jefferson County, Colorado. East slope of Tarryall Mountains, small ridge above Forest Road 211 and North Twin Creek, along a horse or cow trail, 11.3 km. (geodesic) southwest of Deckers. 39.2106°N, 105.3449°W. WGS 1984 Elev. 2479 m. In loose, deep grus with: Pinus ponderosa, Pseudotsuga menziesii, Artemisia ludoviciana, Phacelia sp., Ribes cereum, and Cercocarpus montanus. This area burned in the Hayman Fire of 2002.

Collected by permit: Pike San Isabel National Forest, 2025, issued: Mar 26, 2025, to: Tom Schweich.

Tom Schweich 3493.

18-Aug-2025

Coll. No. 3494, Phacelia hastata.

3494

Phacelia sp., probably P. hastata.

Plants of Colorado
East Slope of Tarryall Mountains, Jefferson County Boraginaceae

Phacelia hastata Douglas ex Lehm. Silverleaf Phacelia.

North Twin Creek, Jefferson County, Colorado. East slope of Tarryall Mountains, small ridge above Forest Road 211 and North Twin Creek, along a horse or cow trail, 11.3 km. (geodesic) southwest of Deckers. 39.2106°N, 105.34492°W. WGS 1984 Elev. 2478 m. Multiple stems from caudex. In loose, deep grus with: Pinus ponderosa, Pseudotsuga menziesii, Artemisia ludoviciana, Mentzelia speciosa, Phacelia sp., Ribes cereum, and Cercocarpus montanus. This area burned in the Hayman Fire of 2002.

Collected by permit: Pike San Isabel National Forest, 2025, issued: Mar 26, 2025, to: Tom Schweich.

Tom Schweich 3494.

18-Aug-2025

Coll. No. 3495, Hymenothrix dissecta.

3495

Hymenothrix dissecta.

Plants of Colorado
East Slope of Tarryall Mountains, Jefferson County Asteraceae

Hymenothrix dissecta (A. Gray) B. G. Baldwin. Ragleaf Bahia.

North Twin Creek, Jefferson County, Colorado. East slope of Tarryall Mountains, small ridge above Forest Road 211 and North Twin Creek, along a horse or cow trail, 11.3 km. (geodesic) southwest of Deckers. 39.21122°N, 105.34603°W. WGS 1984 Elev. 2496 m. This area burned in the Hayman Fire of 2002. In a pool of grus between outcrops of Pikes Peak granite. With Pinus ponderosa, Achillea millefolium, Cryptantha virgata, Campanula rotundifolia, Arctostaphylos uva-ursi, Jamesia americana, Cercocarpus montanus, Holodiscus dumosa, Rubus deliciousus, Verbascum thapsus, and Bouteloua gracilis.

Collected by permit: Pike San Isabel National Forest, 2025, issued: Mar 26, 2025, to: Tom Schweich.

Tom Schweich 3495.

18-Aug-2025

3496

Liatris punctata.

Plants of Colorado
East Slope of Tarryall Mountains, Jefferson County Asteraceae

Liatris punctata Hook. Dotted Blazing Star.

North Twin Creek, Jefferson County, Colorado. East slope of Tarryall Mountains, small ridge above Forest Road 211 and North Twin Creek, along a horse or cow trail, 11.3 km. (geodesic) southwest of Deckers. 39.21122°N, 105.34579°W. WGS 1984 Elev. 2495 m. Phyllaries erect, acuminate to acute, ciliate; pappus plumose. With Pinus ponderosa, Aletes anisatus, Achillea millefolium, Cryptantha virgata, Arctostaphylos uva-ursi, Jamesia americana, Cercocarpus montanus, Holodiscus dumosa, Rubus deliciosus, Verbascum thapsus, and Bouteloua gracilis. In grus adjacent to outcrops of Pikes Peak granite. This area burned in the Hayman Fire of 2002.

Collected by permit: Pike San Isabel National Forest, 2025, issued: Mar 26, 2025, to: Tom Schweich.

Tom Schweich 3496.

18-Aug-2025

3497

Solidago, maybe S. missouriensis

Plants of Colorado
East Slope of Tarryall Mountains, Jefferson County Asteraceae

Solidago missouriensis Nutt. Missouri Goldenrod.

North Twin Creek, Jefferson County, Colorado. East slope of Tarryall Mountains, small ridge above Forest Road 211 and North Twin Creek, along a horse or cow trail, 11.3 km. (geodesic) southwest of Deckers. 39.21115°N, 105.34576°W. WGS 1984 Elev. 2494 m. Leaves 3-nerved, distally toothed, ciliate. With Pinus ponderosa, Aletes anisatus, Achillea millefolium, Cryptantha virgata, Arctostaphylos uva-ursi, Jamesia americana, Cercocarpus montanus, Holodiscus dumosa, Rubus deliciosus, Verbascum thapsus, and Bouteloua gracilis. In grus adjacent to outcrops of Pikes Peak granite. This area burned in the Hayman Fire of 2002.

Collected by permit: Pike San Isabel National Forest, 2025, issued: Mar 26, 2025, to: Tom Schweich.

Tom Schweich 3497.

18-Aug-2025

3498

Bouteloua gracilis.

Plants of Colorado
East Slope of Tarryall Mountains, Jefferson County Poaceae

Bouteloua gracilis (Kunth) Lag. ex Griffiths. Blue Grama.

North Twin Creek, Jefferson County, Colorado. East slope of Tarryall Mountains, small ridge above Forest Road 211 and North Twin Creek, along a horse or cow trail, 11.3 km. (geodesic) southwest of Deckers. 39.21129°N, 105.34566°W. WGS 1984 Elev. 2496 m. With Pinus ponderosa, Aletes anisatus, Achillea millefolium, Solidago missouriensis, Cryptantha virgata, Arctostaphylos uva-ursi, Jamesia americana, Cercocarpus montanus, Holodiscus dumosa, Rubus deliciosus, and Verbascum thapsus. In grus adjacent to outcrops of Pikes Peak granite. This area burned in the Hayman Fire of 2002.

Collected by permit: Pike San Isabel National Forest, 2025, issued: Mar 26, 2025, to: Tom Schweich.

Tom Schweich 3498.

18-Aug-2025

3499

Senecio spartioides.

Plants of Colorado
East Slope of Tarryall Mountains, Jefferson County Asteraceae

Senecio spartioides Torr. & A. Gray. Broomlike Ragwort.

North Twin Creek, Jefferson County, Colorado. East slope of Tarryall Mountains, small ridge above Forest Road 211 and North Twin Creek, along a horse or cow trail, 11.3 km. (geodesic) southwest of Deckers. 39.21179°N, 105.34552°W. WGS 1984 Elev. 2501 m. With Artemisia frigida, Drymocallis fissa, and Muhlenbergia montana. In grus adjacent to outcrops of Pikes Peak granite. This area burned in the Hayman Fire of 2002.

Collected by permit: Pike San Isabel National Forest, 2025, issued: Mar 26, 2025, to: Tom Schweich.

Tom Schweich 3499.

18-Aug-2025

3500

Ceanothus fendleri.

Plants of Colorado
East Slope of Tarryall Mountains, Jefferson County Rhamnaceae

Ceanothus fendleri A. Gray. Fendler's Ceanothus.

North Twin Creek, Jefferson County, Colorado. East slope of Tarryall Mountains, small ridge above Forest Road 211 and North Twin Creek, along a horse or cow trail, 11.3 km. (geodesic) southwest of Deckers. 39.21123°N, 105.34641°W. WGS 1984 Elev. 2489 m. With Pinus ponderosa, Aletes anisatus, Achillea millefolium, Solidago missouriensis, Cryptantha virgata, Arctostaphylos uva-ursi, Jamesia americana, Cercocarpus montanus, Holodiscus dumosa, Rubus deliciosus, and Verbascum thapsus. This area burned in the Hayman Fire of 2002.

Collected by permit: Pike San Isabel National Forest, 2025, issued: Mar 26, 2025, to: Tom Schweich.

Tom Schweich 3500.

18-Aug-2025

Coll. No. 3501, Pericome caudata.

3501

Pericome caudata.

Plants of Colorado
East Slope of Tarryall Mountains, Jefferson County Asteraceae

Pericome caudata A. Gray. Mountain Tail-Leaf.

North Twin Creek, Jefferson County, Colorado. East slope of Tarryall Mountains, small ridge above Forest Road 211 and North Twin Creek, outcrop of Pikes Peak granite, 11.3 km. (geodesic) southwest of Deckers. 39.21108°N, 105.34635°W. WGS 1984 Elev. 2480 m. Most leaves wilted when collected. Fracture in bare granite. This area burned in the Hayman Fire of 2002.

Collected by permit: Pike San Isabel National Forest, 2025, issued: Mar 26, 2025, to: Tom Schweich.

Tom Schweich 3501.

18-Aug-2025

Other articles:
• Notes on Colorado Flora: Aletes anisatus;
Obs. No. 4387, Aletes anisatus growing on a disintegrating outcrop of granite.

Aletes anisatus growing in grus on a disintegrating outcrop of Pikes Peak granite.

Locations: Ranson/Edwards Homestead Open Space Park.

Sunday, 31 August 2025

Ranson/Edwards, in search of the wild tarweed.

Habitat of Coll. No. 3502, Madia glomerata.

Coll. No. 3502, Madia glomerata.

3502

Madia glomerata.

Plants of Jefferson County Open Space
Jefferson County, Colorado Asteraceae

Madia glomerata Hook. Mountain Tarweed.

Ranson/Edwards Homestead Open Space Park, Jefferson County, Colorado. Highest Great Plains above Rocky Flats, about 1.7 mi. west on CO Hwy 72 from CO Hwy 93, 0.9 mi. generally north on Plainview road, then about 200 m. west, just below the spillway of a small dam. 39.88639°N, 105.26417°W. WGS 1984 Elev. 1957 m. Observed here: Cirsium arvense, Lycopus americanus, Epilobium sp., Fallopia convolvulus, Persicaria pensylvanica, Rumex triangulivalvis, Potentilla recta, Juncus sp. and Bromus inermis. Previously collected about 130 m. west (KHD83324), which occurrence could not be relocated on this date.

Collected by permit: Jefferson County Open Space, 2025, issued: May 1, 2025, to: Tom Schweich.

Tom Schweich 3502.

31-Aug-2025

Other articles:
• Forest Road 211: at camp site 2; at camp site 3; at Camp Site 5; along road; at Camp Site 6; at camp site; at Camp Site 9;

Locations: Twin Creek.
View of Sheeprock from Camp Site 5.

Wednesday, 3 September 2025

North Fork of South Twin Creek.

Tarryall Mountains from Camp Site 5.	Camp Site 5 along Forest Road 211.	Camp Site 6 along FR 211.	Camp Site 8 along Forest Road 211.	Camp Site 9, with North Twin Creek in the middleground.
Camp Site 3 along Forest Road 211.	Camp Site 2 along Forest Road 211.

Coll. No. 3503, Chenopodium leptophyllum.

3503

Chenopodium sp.

Plants of Colorado
East Slope of Tarryall Mountains, Jefferson County Chenopodiaceae

Chenopodium leptophyllum (Moq.) Nutt. ex S. Watson. Narrowleaf Goosefoot.

Twin Creek, Jefferson County, Colorado. Along an old road into Twin Creek from F. R. 211, 11.8 km. southwest of Deckers. 39.20441°N, 105.34688°W. WGS 1984 Elev. 2397 m. Also here: Artemisia frigida, Senecio spartioides, Euphorbia serpyllifolia, Cercocarpus montanus, Verbascum thapsus, Bouteloua gracilis, and Eriocoma robusta.

Collected by permit: Pike San Isabel National Forest, 2025, issued: Mar 26, 2025, to: Tom Schweich.

Tom Schweich 3503.

3-Sep-2025

3504

Eriocoma robusta.

Plants of Colorado
East Slope of Tarryall Mountains, Jefferson County Poaceae

Eriocoma robusta (Vasey) Romasch. Sleepy Grass.

Twin Creek, Jefferson County, Colorado. Along an old road into Twin Creek from F. R. 211, 11.8 km. southwest of Deckers. 39.20438°N, 105.34685°W. WGS 1984 Elev. 2386 m. Also here: Artemisia frigida, Senecio spartioides, Chenopodium leptophyllum, Euphorbia serpyllifolia, Cercocarpus montanus, Verbascum thapsus, and Bouteloua gracilis.

Collected by permit: Pike San Isabel National Forest, 2025, issued: Mar 26, 2025, to: Tom Schweich.

Tom Schweich 3504.

3-Sep-2025

Coll. No. 3505, Euphorbia serpillifolia.

3505

Euphorbia sp.

Plants of Colorado
East Slope of Tarryall Mountains, Jefferson County Euphorbiaceae

Euphorbia serpillifolia Pers. Thymeleaf Sandmat.

Twin Creek, Jefferson County, Colorado. Edge of a drying mud puddle in an old road between Twin Creek and F. R. 211, 11.8 km. southwest of Deckers. 39.20437°N, 105.34687°W. WGS 1984 Elev. 2387 m. Also here: Artemisia frigida, Senecio spartioides, Chenopodium leptophyllum, Cercocarpus montanus, Verbascum thapsus, Bouteloua gracilis, and Eriocoma robusta.

Collected by permit: Pike San Isabel National Forest, 2025, issued: Mar 26, 2025, to: Tom Schweich.

Tom Schweich 3505.

3-Sep-2025

Coll. No. 3506, Symphyotrichum porteri

3506

Erigeron sp., rays white.

Plants of Colorado
East Slope of Tarryall Mountains, Jefferson County Asteraceae

Symphyotrichum porteri (A. Gray) G.L. Nesom. Smooth White Aster.

Twin Creek, Jefferson County, Colorado. About 7 miles west and south on F. R. 211 from its north end at County Road 126 to a USFS designated parking place, then about 200 m. generally west on old roads into the Twin Creek drainage, 11.8 km. southwest of Deckers. 39.20456°N, 105.34724°W. WGS 1984 Elev. 2389 m. Southwest facing slope. Also here: Artemisia frigida, Senecio spartioides, Cercocarpus montanus, Verbascum thapsus, Bouteloua gracilis, and Eriocoma robusta.

Collected by permit: Pike San Isabel National Forest, 2025, issued: Mar 26, 2025, to: Tom Schweich.

Tom Schweich 3506.

3-Sep-2025

FNANM distinguishes this from S. pilosum by its lack of axillary clusters of leaves, yet these specimens have those axillary clusters.

Coll. No. 3507, Artemisia frigida.

3507

Artemisia frigida.

Plants of Colorado
East Slope of Tarryall Mountains, Jefferson County Asteraceae

Artemisia frigida Willd. Prairie Sagewort.

Twin Creek, Jefferson County, Colorado. About 7 miles west and south on F. R. 211 from its north end at County Road 126 to a USFS designated parking place, then about 200 m. generally west on old roads into the Twin Creek drainage, 11.8 km. southwest of Deckers. 39.20453°N, 105.34726°W. WGS 1984 Elev. 2387 m. Southwest facing slope. Collected with Symphyotrichum porteri; also here: Senecio spartioides, Cercocarpus montanus, Verbascum thapsus, Bouteloua gracilis, and Eriocoma robusta.

Collected by permit: Pike San Isabel National Forest, 2025, issued: Mar 26, 2025, to: Tom Schweich.

Tom Schweich 3507.

3-Sep-2025

Mixed collection, Artemisia ludoviciana in with A. frigida.

Plants of Colorado
East Slope of Tarryall Mountains, Jefferson County Asteraceae

Artemisia ludoviciana Nutt. ssp. incompta (Nutt.) D. D. Keck. White Sagebrush.

Twin Creek, Jefferson County, Colorado. About 7 miles west and south on F. R. 211 from its north end at County Road 126 to a USFS designated parking place, then about 200 m. generally west on old roads into the Twin Creek drainage, 11.8 km. southwest of Deckers. 39.20453°N, 105.34727°W. WGS 1984 Elev. 2387 m. Southwest facing slope. Collected with Artemisia frigida and Symphyotrichum porteri; also here: Senecio spartioides, Cercocarpus montanus, Verbascum thapsus, Bouteloua gracilis, and Eriocoma robusta.

Collected by permit: Pike San Isabel National Forest, 2025, issued: Mar 26, 2025, to: Tom Schweich.

Tom Schweich 3507.1

3-Sep-2025

Other articles:
• Forest Road 211: at parking;

Locations: Twin Creek.
Twin Creek, above its confluence with North Twin Creek.

Twin Creek above its confluence with North Twin Creek.

Coll. No. 3508, Symphyotrichum foliaceum var. parryi.

3508

Symphyotrichum laeve.

Plants of Colorado
East Slope of Tarryall Mountains, Jefferson County Asteraceae

Symphyotrichum foliaceum (DC.) G. L. Nesom var. parryi (D. C. Eaton) G. L. Nesom. Parry's Aster.

Twin Creek, Jefferson County, Colorado. About 7 miles west and south on F. R. 211 from its north end at County Road 126 to a USFS designated parking place, then about 220 m. generally west on old roads into the Twin Creek drainage, 11.9 km. southwest of Deckers. 39.20462°N, 105.348°W. WGS 1984 Elev. 2381 m. Bank of Twin Creek. With Bouteloua gracilis.

Collected by permit: Pike San Isabel National Forest, 2025, issued: Mar 26, 2025, to: Tom Schweich.

Tom Schweich 3508.

3-Sep-2025

Coll. No. 3509, Muhlenbergia wrightii.

3509

Grass, maybe Muhlenbergia wrightii.

Plants of Colorado
East Slope of Tarryall Mountains, Jefferson County Poaceae

Muhlenbergia wrightii Vasey ex J.M. Coult. Spike Muhly.

Twin Creek, Jefferson County, Colorado. About 7 miles west and south on F. R. 211 from its north end at County Road 126 to a USFS designated parking place, then about 220 m. generally west on old roads into the Twin Creek drainage, 11.9 km. southwest of Deckers. 39.20456°N, 105.34799°W. WGS 1984 Elev. 2382 m. Small terrace beside Twin Creek. With Symphyotrichum foliaceum var. parryi and Bouteloua gracilis

Collected by permit: Pike San Isabel National Forest, 2025, issued: Mar 26, 2025, to: Tom Schweich.

Tom Schweich 3509.

3-Sep-2025

Coll. No. 3510, Ericameria parryi var. affinis.

3510

Ericameria, maybe E. parryi.

Plants of Colorado
East Slope of Tarryall Mountains, Jefferson County Asteraceae

Ericameria parryi (A. Gray) G. I. Nesom & G. I. Baird var. affinis (A. Nelson) G. L. Nesom & G. I. Baird. Parry's Rabbitbrush.

Twin Creek, Jefferson County, Colorado. About 7 miles west and south on F. R. 211 from its north end at County Road 126 to a USFS designated parking place, then about 235 m. generally west on old roads into the Twin Creek drainage, 11.9 km. southwest of Deckers. 39.20459°N, 105.34826°W. WGS 1984 Elev. 2388 m. Broad terrace on right bank of Twin Creek

Collected by permit: Pike San Isabel National Forest, 2025, issued: Mar 26, 2025, to: Tom Schweich.

Tom Schweich 3510.

3-Sep-2025

Foundations and water trough along Twin Creek.

Foundations above Twin Creek.

Coll. No. 3511, Alnus incana ssp. tenuifolia

3511

Alder?

Plants of Colorado
East Slope of Tarryall Mountains, Jefferson County Betulaceae

Alnus incana (L.) Moench ssp. tenuifolia (Nutt.) Brietung. Thinleaf Alder.

Twin Creek, Jefferson County, Colorado. About 7 miles west and south on F. R. 211 from its north end at County Road 126 to a USFS designated parking place, then about 325 m. generally northwest on old roads into the Twin Creek drainage, 11.8 km. southwest of Deckers. 39.20556°N, 105.34889°W. WGS 1984 Elev. 2388 m. Dense thicket about 125 m. by 25 m. wide on both sides of Twin Creek. Coll. Nos. 3511 and 3512.1 have only pistillate catkins; Coll. No. 3512 has both pistillate and staminate catkins.

Collected by permit: Pike San Isabel National Forest, 2025, issued: Mar 26, 2025, to: Tom Schweich.

Tom Schweich 3511.

3-Sep-2025

Coll. No. 3512, Alnus incana ssp. tenuifolia.

3512

Alder

Plants of Colorado
East Slope of Tarryall Mountains, Jefferson County Betulaceae

Alnus incana (L.) Moench ssp. tenuifolia (Nutt.) Brietung. Thinleaf Alder.

Twin Creek, Jefferson County, Colorado. About 7 miles west and south on F. R. 211 from its north end at County Road 126 to a USFS designated parking place, then about 325 m. generally northwest on old roads into the Twin Creek drainage, 11.8 km. southwest of Deckers. 39.20591°N, 105.34897°W. WGS 1984 Elev. 2397 m. Dense thicket about 125 m. by 25 m. wide on both sides of Twin Creek. Coll. Nos. 3511 and 3512.1 made on the ends of the thicket have only pistillate catkins; Coll. No. 3512 made in the middle of the thicket has both pistillate and staminate catkins.

Collected by permit: Pike San Isabel National Forest, 2025, issued: Mar 26, 2025, to: Tom Schweich.

Tom Schweich 3512.

3-Sep-2025

3512.1

Alder

Plants of Colorado
East Slope of Tarryall Mountains, Jefferson County Betulaceae

Alnus incana (L.) Moench ssp. tenuifolia (Nutt.) Brietung. Thinleaf Alder.

Twin Creek, Jefferson County, Colorado. About 7 miles west and south on F. R. 211 from its north end at County Road 126 to a USFS designated parking place, then about 325 m. generally northwest on old roads into the Twin Creek drainage, 11.8 km. southwest of Deckers. 39.20592°N, 105.34898°W. WGS 1984 Elev. 2397 m. Dense thicket about 125 m. by 25 m. wide on both sides of Twin Creek. Coll. Nos. 3511 and 3512.1 made on the ends of the thicket have only pistillate catkins; Coll. No. 3512 made in the middle of the thicket has both pistillate and staminate catkins.

Collected by permit: Pike San Isabel National Forest, 2025, issued: Mar 26, 2025, to: Tom Schweich.

Tom Schweich 3512.1

3-Sep-2025

3513

Trifolium sp.

Plants of Colorado
East Slope of Tarryall Mountains, Jefferson County Fabaceae

Trifolium pratense L. Red Clover.

North Twin Creek, Jefferson County, Colorado. Flood plain of North Twin Creek just below where crossed by F. R. 211, about 6.8 miles west and south from its north end on County Road 126, 11.4 km. southwest of Deckers. 39.20757°N, 105.34387°W. WGS 1984 Elev. 2401 m. Few large, pink flowers, perhaps few because of late season. Shade of willows. This area burned in the Hayman Fire of 2002.

Collected by permit: Pike San Isabel National Forest, 2025, issued: Mar 26, 2025, to: Tom Schweich.

Tom Schweich 3513.

3-Sep-2025

3514

Leucanthemum vulgare.

Plants of Colorado
East Slope of Tarryall Mountains, Jefferson County Asteraceae

Leucanthemum vulgare (Vaill.) Lam. Ox-eye Daisy.

North Twin Creek, Jefferson County, Colorado. Streambed and banks of North Twin Creek just below where crossed by F. R. 211, about 6.8 miles west and south from its north end on County Road 126, 11.4 km. southwest of Deckers. 39.20791°N, 105.34464°W. WGS 1984 Elev. 2405 m. Shade of willows. This area burned in the Hayman Fire of 2002.

Collected by permit: Pike San Isabel National Forest, 2025, issued: Mar 26, 2025, to: Tom Schweich.

Tom Schweich 3514.

3-Sep-2025

Obs. No. 4391, Grindelia squarrosa.

Grindelia squarrosa, in my garden.

Locations: DeLong Park (City of Golden).
Obs. No. 4392, Grindelia subalpina in DeLong Park.

Grindelia subalpina.

Locations: Parfet Open Space (City of Golden).

Thursday, 11 September 2025

Parfet Open Space

Coll. No. 3515, Symphyotrichum ericoides.

3515

Symphyotrichum ericoides.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado Asteraceae

Symphyotrichum ericoides (Linnaeus) G. L. Nesom. White Heath Aster.

Parfet Open Space (City of Golden), Jefferson County, Colorado. Central part of the open space, in a less-disturbed area, just above the Welch Ditch and in between various trees and shrubs, 1.02 km. southwest of the GNIS location of Golden. 39.74933°N, 105.22992°W. WGS 1984 Elev. 1780 m. Dry, gravelly north-facing slope, with Linum sp., Cercocarpus montanus, Rhus trilobata, Yucca glauca, and Bromus inermis. This parcel was designated a City of Golden Open Space in 2025.

Collected by permit: City of Golden, 2025, issued: Mar 14, 2025, to: Tom Schweich.

Tom Schweich 3515.

11-Sep-2025

3516

Liatris punctata

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado Asteraceae

Liatris punctata Hook. Dotted Blazing Star.

Parfet Open Space (City of Golden), Jefferson County, Colorado. Central part of the open space, in a less-disturbed area, just above the Welch Ditch and in between various trees and shrubs, 1.02 km. southwest of the GNIS location of Golden. 39.74935°N, 105.22979°W. WGS 1984 Elev. 1780 m. Dry, gravelly north-facing slope, with Rhus trilobata, Symphyotrichum ericoides, Linum sp., Cercocarpus montanus, Yucca glauca, and Bromus inermis. This parcel was designated a City of Golden Open Space in 2025.

Collected by permit: City of Golden, 2025, issued: Mar 14, 2025, to: Tom Schweich.

Tom Schweich 3516.

11-Sep-2025

Coll. No. 3517, Symphyotrichum fendleri.

3517

Dieteria sp. ??

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado Asteraceae

Symphyotrichum fendleri (A. Gray) G. L. Nesom. Fendler's Aster.

Parfet Open Space (City of Golden), Jefferson County, Colorado. Central part of the open space, in a less-disturbed area, just above the Welch Ditch and in between various trees and shrubs, 1.02 km. southwest of the GNIS location of Golden. 39.74936°N, 105.22977°W. WGS 1984 Elev. 1778 m. Dry, gravelly north-facing slope, with Rhus trilobata, Liatris punctata, Symphyotrichum ericoides, Linum sp., Cercocarpus montanus, Yucca glauca, and Bromus inermis. This parcel was designated a City of Golden Open Space in 2025.

Collected by permit: City of Golden, 2025, issued: Mar 14, 2025, to: Tom Schweich.

Tom Schweich 3517.

11-Sep-2025

Collection No. 3517, 11 September 2025, characters observed: Perennial herb, to 25 cm., caudex unknown; Stem, strigose; Leaves, cauline, alternate, sessile, blade 28 mm. × 2 mm. wide, reduced distally, linear to linear-oblanceolate, entire, margins regularly-spaced ciliate, tips white-spinulose; Inflorescence, 6± heads per stem; Involucre, 5 mm. × 7 mm. wide, bell-shaped; Phyllaries, unequal, 3± series, 4-5 mm. × 1.2 mm. wide, base indurate, diamond-shaped green distally, stipitate-glandular, margins flat, tips acuminate; Receptacle, epaleate; Flowers, of 2 kinds; Rays, #15±, tube 6 mm. + blade 6-7 mm. × 1.3 mm. wide, blue; Disk flowers, many, 4 mm., yellow; Pappus, many well-developed bristles, 4.5 mm., brown to light tan ("cinnamon to sordid" in FNANM); Cypsela, 1 mm. × 0.5 mm. wide, light brown. The FNANM term "strigoso-hispid" may apply more accurately to stem and leaf margin hairs.

Coll. No. 3518, Atriplex canescens.

3518

Atriplex canescens.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado Chenopodiaceae

Atriplex canescens (Pursh) Nutt. Four-wing Saltbush.

Parfet Open Space (City of Golden), Jefferson County, Colorado. Slope above right bank of Welch Ditch, 955 m. southwest of the GNIS location of Golden. 39.74958°N, 105.22914°W. Two mature shrubs. With Artemisia ludoviciana, Kraschinnikovia lanata, and Bromus inermis. Additional plants about 66 m. east on CDOT right of way. This parcel was designated a City of Golden Open Space in 2025.

Collected by permit: City of Golden, 2025, issued: Mar 14, 2025, to: Tom Schweich.

Tom Schweich 3518.

11-Sep-2025

3519

Artemisia campestris.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado Asteraceae

Artemisia campestris L. ssp. caudata (Michx.) Palmer & Steyerm. Field Sagewort.

Parfet Open Space (City of Golden), Jefferson County, Colorado. Top of the ridge in the northeast part of the Open Space, near the windsock for the hang gliders, appears to be pre-development topography, 918 m. southwest of the GNIS location of Golden. 39.74958°N, 105.22852°W. WGS 1984 Elev. 1796 m. Basal leaves withered, single stems, cauline leaves divided. With Artemisia ludoviciana and Alyssum simplex.

Collected by permit: City of Golden, 2025, issued: Mar 14, 2025, to: Tom Schweich.

Tom Schweich 3519.

11-Sep-2025

3520

Xanthisma spinulosum.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado Asteraceae

Xanthisma spinulosum (Pursh) D. R. Morgan & R. L. Hartm. Spiny Goldenweed.

Parfet Open Space (City of Golden), Jefferson County, Colorado. Top of the ridge in the northeast part of the Open Space, appears to be pre-development topography, 950 m. southwest of the GNIS location of Golden. 39.74924°N, 105.22859°W. WGS 1984 Elev. 1798 m. In short grasses with Artemisia campestris, Grindelia subalpina, Mentzelia nuda, and Mirabilis linearis; Hybanthus verticillatus previously found nearby but not seen on this date. This parcel was designated a City of Golden Open Space in 2025.

Collected by permit: City of Golden, 2025, issued: Mar 14, 2025, to: Tom Schweich.

Tom Schweich 3520.

11-Sep-2025

Coll. No. 3521, Grindelia inornata.

Leaves of Coll. No. 3521, Grindelia inornata.

Coll. No. 3521, Grindelia inornata.

3521

Grindelia subalpina.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado Asteraceae

Grindelia inornata Greene. Colorado Gumweed.

Parfet Open Space (City of Golden), Jefferson County, Colorado. In a small gulch below Parfet Estates Drive, general topography is probably original but area disturbed by water line installation, 1.01 km. southwest of the GNIS location of Golden. 39.74905°N, 105.22935°W. WGS 1984 Elev. 1783 m. About a dozen plants here; leaves serrate, except some proximal cauline leaves entire; inflorescence ray-less. With Ericameria nauseosa var. graveolens and Bromus inermis. This parcel was designated a City of Golden Open Space in 2025.

Collected by permit: City of Golden, 2025, issued: Mar 14, 2025, to: Tom Schweich.

Tom Schweich 3521.

11-Sep-2025

3522

Gutierrezia sarothrae.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado Asteraceae

Gutierrezia sarothrae (Pursh) Britton & Rusby. Broom Snakeweed.

Parfet Open Space (City of Golden), Jefferson County, Colorado. Upper slope, southwest part of open space, 1.11 km. southwest of the GNIS location of Golden. 39.74848°N, 105.23032°W. WGS 1984 Elev. 1794 m. With Artemisia ludoviciana, Symphyotrichum ericoides, and Opuntia polyacantha. Designated as a City of Golden Open Space in 2025.

Collected by permit: City of Golden, 2025, issued: Mar 14, 2025, to: Tom Schweich.

Tom Schweich 3522.

11-Sep-2025

Obs. No. 4396, Grindelia subalpina.

3523

Cenchrus longispinus

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado Poaceae

Cenchrus longispinus (Hack.) Fern. Longspine Sandbur.

New Loveland Mine Park, Jefferson County, Colorado. Approximate center of park, in mowed verge of natural area adjacent to sidewalk, in a strip about 1 m. wide by 9 m. long, 1.02 km. (geodesic) northwest of the GNIS location of Golden. 39.75833°N, 105.2325°W. WGS 1984 Elev. 1765 m. This area receives some water that flows across the sidewalk from the turf area.

Collected by permit: City of Golden, 2025, issued: Mar 14, 2025, to: Tom Schweich.

Tom Schweich 3523.

14-Sep-2025

Locations: Grampsas North Open Space (City of Golden).
Grampsas North Open Space from the southwest corner, 15 September 2025.

Monday, 15 September 2025

Grampsas North Open Space.

3524

Ericameria nauseosa var. nauseosa.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado Asteraceae

Ericameria nauseosa (Pall. ex Pursh) G. I. Nesom & G. I. Baird var. nauseosa. Rubber Rabbitbush.

Grampsas North Open Space (City of Golden), Jefferson County, Colorado. Northern portion of the Tony Grampsas Memorial Sports Complex, lower northeast slope of small alluvial hill, southeast side of North Table Mountain, 4.06 km. (geodesic) northeast of the GNIS location of Golden. 39.78109°N, 105.18715°W. WGS 1984 Elev. 1733 m. With: Artemisia dracunculus, Alyssum simplex, Opuntia macrorhiza, Bromus tectorum, and Hesperostipa comata. Compare to Coll. No. 3528 of var. graveolens collected 131 m. to the northwest. This area was designated a City of Golden open space in 2025.

Collected by permit: City of Golden, 2025, issued: Mar 14, 2025, to: Tom Schweich.

Tom Schweich 3524.

15-Sep-2025

3525

Artemisia dracunculus.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado Asteraceae

Artemisia dracunculus L. Tarragon, Dragonwort.

Grampsas North Open Space (City of Golden), Jefferson County, Colorado. Northern portion of the Tony Grampsas Memorial Sports Complex, lower northeast slope of small alluvial hill, southeast side of North Table Mountain, 4.02 km. (geodesic) northeast of the GNIS location of Golden. 39.781°N, 105.18767°W. WGS 1984 Elev. 1742 m. Also here: Thelesperma megapotamicum, Alyssum simplex, Pediomelum tenuiflorum, Linaria dalmatica, and Hesperostipa comata. This area was designated a City of Golden open space in 2025.

Collected by permit: City of Golden, 2025, issued: Mar 14, 2025, to: Tom Schweich.

Tom Schweich 3525.

15-Sep-2025

3526

Brickellia eupatoroides.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado Asteraceae

Brickellia eupatorioides (L.) Shinners. False Boneset.

Grampsas North Open Space (City of Golden), Jefferson County, Colorado. Northern portion of the Tony Grampsas Memorial Sports Complex, lowest northeast slope of small alluvial hill, southeast side of North Table Mountain, 4.10 km. (geodesic) northeast of the GNIS location of Golden. 39.78176°N, 105.18728°W. WGS 1984 Elev. 1730 m. Also here: Symphyotrichum ericoides, Pediomelum tenuiflorum, Potentilla recta, and Bromus inermis. This area was designated a City of Golden open space in 2025.

Collected by permit: City of Golden, 2025, issued: Mar 14, 2025, to: Tom Schweich.

Tom Schweich 3526.

15-Sep-2025

Secund head of Coll. No. 3527, Symphyotrichum ericoides.

3527

Symphyotrchum ericoides.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado Asteraceae

Symphyotrichum ericoides (Linnaeus) G. L. Nesom. White Heath Aster.

Grampsas North Open Space (City of Golden), Jefferson County, Colorado. Northern portion of the Tony Grampsas Memorial Sports Complex, lowest northeast slope of small alluvial hill, southeast side of North Table Mountain, 4.10 km. (geodesic) northeast of the GNIS location of Golden. 39.78184°N, 105.18739°W. WGS 1984 Elev. 1731 m. Also here: Ambrosia psilostachya, Brickellia eupatorioides, Ericameria nauseosa var. graveolens, Potentilla recta, and Bromus inermis.

Collected by permit: City of Golden, 2025, issued: Mar 14, 2025, to: Tom Schweich.

Tom Schweich 3527.

15-Sep-2025

Sea of “Goldy-locks” at Grampsas North Open Space.

3528

Ericameria nauseosa var. graveolens.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado Asteraceae

Ericameria nauseosa (Pall. ex Pursh) G.L.Nesom & G.I.Baird var. graveolens (Nutt.) Reveal & Schuyler. Goldy-Locks.

Grampsas North Open Space (City of Golden), Jefferson County, Colorado. Northern portion of the Tony Grampsas Memorial Sports Complex, flat field, southeast side of North Table Mountain, 4.10 km. (geodesic) northeast of the GNIS location of Golden. 39.78213°N, 105.18787°W. WGS 1984 Elev. 1732 m. Dense stand of Ericameria nauseosa var. graveolens with Ambrosia psilostachya, Chenopodium album, Physalis hederifolia, and Bromus japonicus. Compare to Coll. No. 3524 of var. nauseosa collected 131 m. to the southeast. This area was designated a City of Golden open space in 2025.

Collected by permit: City of Golden, 2025, issued: Mar 14, 2025, to: Tom Schweich.

Tom Schweich 3528.

15-Sep-2025

3529

Chenopodium album.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado Chenopodiaceae

Chenopodium album L. Lambsquarters.

Grampsas North Open Space (City of Golden), Jefferson County, Colorado. Northern portion of the Tony Grampsas Memorial Sports Complex, flat field, southeast side of North Table Mountain, 4.10 km. (geodesic) northeast of the GNIS location of Golden. 39.7821°N, 105.18791°W. WGS 1984 Elev. 1732 m. Dense stand of Ericameria nauseosa var. graveolens with Ambrosia psilostachya, Physalis hederifolia, and Bromus japonicus. This area was designated a City of Golden open space in 2025.

Collected by permit: City of Golden, 2025, issued: Mar 14, 2025, to: Tom Schweich.

Tom Schweich 3529.

15-Sep-2025

Locations: North Table Mountain Open Space (City of Golden).

Thursday, 18 September 2025

North Table Mountain Open Space.

Coll. No. 3530, Grindelia subalpina.

3530

Grindelia subalpina.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado Asteraceae

Grindelia subalpina Greene. Subalpine Gumweed.

North Table Mountain Open Space (City of Golden), Jefferson County, Colorado. Along a social trail towards the north end of the City of Golden North Table Mountain Open Space, in a hummocky area that is probably an ancient landslide, 3.0 km. north of the GNIS location of Golden 39.77643°N, 105.22546°W. WGS 1984 Elev. 1908 m. Leaves dentate-apiculate. Also seen or collected here: Heterotheca villosa, Symphyotrichum porteri, Lupinus argenteus, Monarda fistulosa, Bromus inermis, and B. japonicus.

Collected by permit: City of Golden, 2025, issued: Mar 14, 2025, to: Tom Schweich.

Tom Schweich 3530.

18-Sep-2025

Coll. No. 3530, 18 September 2025, characters observed: Perennial herb, 45-60 cm.; Stem, light brown, glabrous; Leaves, cauline, alternate, sessile, blade 45 mm. × 12 mm. wide, reduced distally, oblanceolate, adaxially glandular, margins, dentate, teeth separated 3-5 mm., apiculate; Inflorescence, heads, #3-4 per stem, not overtopped by leaves, showy, gummy exudate; Involucre, 10 mm. × 13 mm. wide, globose, resinous; Phyllaries, in 5± unequal graduated series, lower << rest of involucre, upper 8 mm. × 1.3 mm. wide, resinous, margins, flat, tips, acuminate, lower coiled 360°; Pappus, few, well developed bristles, 3.5 mm, readily falling; Style, 2-branched, stigmatic portion 0.6 mm. + appendages 0.6 mm.; Cypsela, 1.6 mm. × 0.6 mm. wide, black, glabrous.

3531

Heliomeris ?

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado Asteraceae

Heliomeris multiflora Nutt. var. multiflora. Showy Golden Eye.

North Table Mountain Open Space (City of Golden), Jefferson County, Colorado. Along a social trail towards the north end of the North Table Mountain Open Space, in a flat area that is probably the head of an ancient landslide, 2.5 km. north of the GNIS location of Golden. 39.77799°N, 105.22516°W. WGS 1984 Elev. 1909 m. Also seen or collected nearby: Ericameria nauseosa vars. graveolens and nauseosa, Symphyotrichum ericoides, Symphoricarpos sp., Calochortus gunnisonii, and Nassella viridula. Same as Coll. No. 3533.

Collected by permit: City of Golden, 2025, issued: Mar 14, 2025, to: Tom Schweich.

Tom Schweich 3531.

18-Sep-2025

Coll. No. 3531 & 3533, 18 September 2025, characters observed: Perennial herb, to 45 cm.; Stem, proximally glabrate to strigose distally; Leaves, cauline, opposite to few alternate distally, petiole, 3 mm., blade 52 mm. × 13 mm. wide, reduced distally, rhombo-lanceolate, strigose, margins, mostly entire, larger leaves barely serrulate; Inflorescence, heads, 4-10 per stem, showy, not overtopped by leaves; Peduncles, indistinct; Involucre, 5.5 mm. × 10 mm. wide, hemispheric; Phyllaries, in 2-3 ±equal series, 5.5 mm. × 1.5 mm. wide, green, veins, #3, prominent adaxially, margins, flat, tips, acute; Receptacle, paleate; Palea, 5 mm. × 0.9 mm. wide; Perianth, 2 or more whorls; Ray flowers, many, tube, 1.2 mm. + blade 7 mm. × 2.8 mm. wide, yellow, sterile; Disk flowers, many, tube 2.5 mm. + lobes 0.5 mm., yellow, bisexual; Pappus, absent; Cypsela, 1.5 mm. × 0.6 mm. wide, obconic, glabrous, light brown, beakless.

3532

Symphyotrichum ericoides.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado Asteraceae

Symphyotrichum ericoides (Linnaeus) G. L. Nesom. White Heath Aster.

North Table Mountain Open Space (City of Golden), Jefferson County, Colorado. Along a social trail towards the north end of the North Table Mountain Open Space, in a flat area that is probably the head of an ancient landslide, 2.52 km. (geodesic) north of the GNIS location of Golden. 39.77806°N, 105.22517°W. WGS 1984 Elev. 1909 m. Heads secund. With Heliomeris multiflora var. multiflora, Symphoricarpos sp., Monarda fistulosa, Pediomelum tenuiflorum, Calochortus gunnisonii, and Nassella viridula. This area was designated a City of Golden Open Space in 2025.

Collected by permit: City of Golden, 2025, issued: Mar 14, 2025, to: Tom Schweich.

Tom Schweich 3532.

18-Sep-2025

Coll. No. 3533, Heliomeris multiflora var. multiflora.

3533

Heliomeris ??

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado Asteraceae

Heliomeris multiflora Nutt. var. multiflora. Showy Golden Eye.

North Table Mountain Open Space (City of Golden), Jefferson County, Colorado. Along a social trail towards the north end of the North Table Mountain Open Space, in a hummocky area that is probably an ancient landslide, 2.42 km. north of the GNIS location of Golden 39.77712°N, 105.22502°W. WGS 1984 Elev. 1910 m. Also seen or collected nearby: Artemisia ludoviciana, Ericameria nauseosa vars. graveolens and nauseosa, Gutierrezia sarothrae, Liatris punctata, Turritis glabra, Toxicoscordiom paniculatum, and Bromus inermis. Same as Coll. No. 3531.

Collected by permit: City of Golden, 2025, issued: Mar 14, 2025, to: Tom Schweich.

Tom Schweich 3533.

18-Sep-2025

3534

Ericameria nauseosa var. nauseosa.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado Asteraceae

Ericameria nauseosa (Pall. ex Pursh) G. I. Nesom & G. I. Baird var. nauseosa. Rubber Rabbitbush.

North Table Mountain Open Space (City of Golden), Jefferson County, Colorado. Along a social trail towards the north end of the North Table Mountain Open Space, in a flat area that is probably the head of an ancient landslide, 2.41 km. (geodesic) north of the GNIS location of Golden. 39.77703°N, 105.22501°W. WGS 1984 Elev. 1912 m. With Artemisia ludoviciana, Carduus nutans, Heliomeris multiflora var. multiflora, Turritis glabra, Toxicoscordion paniculatum, and Bromus inermis. This area was designated a City of Golden open space in 2025. Compare to Coll. No. 3535 of var. graveolens which was collected about 15 meters to the north.

Collected by permit: City of Golden, 2025, issued: Mar 14, 2025, to: Tom Schweich.

Tom Schweich 3534.

18-Sep-2025

Stem leafy. Blades 1-nerved. Involucre 5.5-7.5. Phyllaries outer barely arachnose, ciliate, inner glabrous. Apices erect. Corolla 6.5 lobes glabrous. Style appendages > stigmatic portion. Pappi 5.0. Cypselae hairy.

Somewhat ambiguous.

3535

Ericameria nauseosa var. graveolens.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado Asteraceae

Ericameria nauseosa (Pall. ex Pursh) G.L.Nesom & G.I.Baird var. graveolens (Nutt.) Reveal & Schuyler. Goldy-Locks.

North Table Mountain Open Space (City of Golden), Jefferson County, Colorado. Along a social trail towards the north end of the North Table Mountain Open Space, in a flat area that is probably the head of an ancient landslide, 2.42 km. (geodesic) north of the GNIS location of Golden. 39.77713°N, 105.22501°W. WGS 1984 Elev. 1912 m. With Artemisia ludoviciana, Carduus nutans, Heliomeris multiflora var. multiflora, Turritis glabra, Toxicoscordion paniculatum, and Bromus inermis. This area was designated a City of Golden open space in 2025. Compare to Coll. No. 3534 of var. nauseosa which was collected about 15 meters to the south.

Collected by permit: City of Golden, 2025, issued: Mar 14, 2025, to: Tom Schweich.

Tom Schweich 3535.

18-Sep-2025

If I followed our Flora of Colorado (Ackerfield, 2022), I would have reversed the determinations, such that the small one (#3534) with ciliate phyllary margins would be var. graveolens and the big one (#3535) with simple phyllary margins would have been var. nauseosa.

Coll. No. 3536, Solidago rigida var. humilis.

3536

Solidago, maybe S. rigida.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado Asteraceae

Solidago rigida L. var. humilis Porter. Stiff Goldenrod.

North Table Mountain Open Space (City of Golden), Jefferson County, Colorado. On an old road that formerly went to the top of the mesa, in an area of hummocky terrain that is probably an ancient landslide, 2.3 km. (geodesic) north of the GNIS location of Golden. 39.77675°N, 105.2252°W. WGS 1984 Elev. 1912 m. Leaves 1-nerved, inflorescence flat-topped, phyllaries with 5 parallel nerves. Low shrubs and grasses, with: Achillea millefolium, Grindelia subalpina, Gutierrezia sarothrae, Heterotheca villosa, Liatris punctata, Bromus inermis and B. japonicus. This area was designated a City of Golden open space in 2025.

Collected by permit: City of Golden, 2025, issued: Mar 14, 2025, to: Tom Schweich.

Tom Schweich 3536.

18-Sep-2025

Looking at the data in SEINet, this would appear to be the first collection of this taxon from Golden.

3537

Gutierrezia sarothrae.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado Asteraceae

Gutierrezia sarothrae (Pursh) Britton & Rusby. Broom Snakeweed.

North Table Mountain Open Space (City of Golden), Jefferson County, Colorado. On an old road that formerly went to the top of the mesa, in an area of hummocky terrain that is probably an ancient landslide, 2.37 km. (geodesic) north of the GNIS location of Golden. 39.77679°N, 105.22514°W. WGS 1984 Elev. 1913 m. Low shrubs and grasses, with: Achillea millefolium, Grindelia subalpina, Heterotheca villosa, Liatris punctata, Solidago rigida var. humilis, Bromus inermis and B. japonicus. This collection is from an old shrub, but there aren't many shrubs here. This area was designated a City of Golden open space in 2025.

Collected by permit: City of Golden, 2025, issued: Mar 14, 2025, to: Tom Schweich.

Tom Schweich 3537.

18-Sep-2025

Coll. No. 3538, Symphyotrichum porteri.

3538

Symphyotrichum porteri.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado Asteraceae

Symphyotrichum porteri (A. Gray) G.L. Nesom. Smooth White Aster.

North Table Mountain Open Space (City of Golden), Jefferson County, Colorado. Beside the City of Golden North Table Mountain Trail, in an area of hummocky terrain that is probably an ancient landslide, 2.33 km. (geodesic) north of the GNIS location of Golden. 39.77623°N, 105.22594°W. WGS 1984 Elev. 1900 m. Petals white with a slight lavender cast. With Liatris punctata, Solidago rigida var. humilis, Symphyotrichum ericoides, Monarda fistulosa, and Carex inops ssp. heliophila. This area was designated a City of Golden open space in 2025.

Collected by permit: City of Golden, 2025, issued: Mar 14, 2025, to: Tom Schweich.

Tom Schweich 3538.

18-Sep-2025

Other articles:
• North Table Loop: half-way;

Locations: North Table Mountain Park.
Experimental Plot on North Table Mountain

Sunday, 21 September 2025

CoNPS field trip to North Table Mountain.

Other articles:
• U. S. Hwy 89: at US I-84;
• Interstate 80: east edge of basin; at Exit 323;
• US I-84: at Exit 87;

Locations: Ogden. Uintah Junction.
Rainy day on US Interstate 80 at its summit in the Sherman Mountain.

Tuesday, 23 September 2025

Golden, CO to Ogden, UT

Abraham Lincoln contemplates the fate of democracy along US Interstate 80.

Westward descent into the Great Divide Basin.

Ridge of Wasatch Range seen from out motel window.

Locations: Pendleton.

Wednesday, 24 September 2025

Ogden, UT to Pendleton, OR

Other articles:
• US I-84: Pendleton;

Locations: Pendleton. Silverton.
Sunrise in Pendletom.

Thursday, 25 September 2025

Pendleton, OR to Silverton, OR

View of downtown Pendleton from above SE 3rd Street.

Pendleton Woolen Mills.

Other articles:
• US I-84: at Exit 76;

Locations: Mayer State Park.
Looking across the Columbia River from Mayer State Park.

Stopped to take a break at Mayer State Park.

Fragile Riparian Area – Do Not Enter

Other articles:
• Historic Columbia River Highway: 11160; at Horsetail Falls;

Locations: Horsetail Falls. Multnomah Falls.
Horsetail Falls

Various waterfalls along Historic Columbia River Highway.

Many visitors at Multnomah Falls.

Multnomah Falls.

Other articles:
• Historic Columbia River Highway: at Vista House;

Locations: Crown Point. Vista House.
View upriver from Crown Point.

Crown Point and Vista House.

View down river from Crown Point.

Vista House on Crown Point.

Locations: Silverton.

Friday, 26 September 2025

Silverton, OR

Locations: Silverton.
Covered pedestrian bridge over Silver Creek.
Silver Creek in Silverton, Oregon.

Silverton, Oregon

Locations: Silverton.
Frank Lloyd Wright's Usonian House concepts.
Interior of Gordon House.

Gordon House Tour

“Front” entrance to Gordon House.

Exterior of Gordon House.

Locations: Silverton.

Saturday, 27 September 2025

Silverton, OR

Locations: Silverton. Yachats.

Sunday, 28 September 2025

Silverton, OR to Yachats, OR

Locations: Silverton.
Oregon Garden Resort.
Upper end of the Oregon Garden.

Oregon Garden Resort

Locations: Yachats.

Monday, 29 September 2025

Yachats, OR

Other articles:
• U. S. Highway 101: at Devil's Churn; at Capt Cook Trlhd.;

Locations: Cape Perpetua.
Spouting Horn at a low-ish (+1 ft) tide.

Cape Perpetua

Polypodium scouleri in a tree at Devils Churn.

Scrophularia lanceolata at Devils Churn Trail.

Other articles:
• U. S. Highway 101: near Amanda's Statue;

Locations: Amanda's Statue.
Amanda's Trail of Sorrow.

Amanda's Statue

Broken Promises; Forced Internment.

Amanda's Statue.

Other articles:
• U. S. Highway 101: s. of town;

Locations: Yachats.
The Yachats River enters the ocean.

Salal (Gaultheria shallon) on the Coast (804) Trail.

Locations: Yachats.

Tuesday, 30 September 2025

Yachats, OR to Lakeview, OR

Other articles:
• Oregon Route 31: Coll. No. 3539, 30 Sep 2025;

Locations: McCarty Butte.
Coll. No. 3539, Ericameria nauseosa var. oreophila.

3539

Ericameria nauseosa

Plants of the Great Basin
California and Nevada Asteraceae

Ericameria nauseosa (Pall. ex Pursh) G. I. Nesom & G. I. Baird var. oreophila (A.Nelson) G.L.Nesom & G.I.Baird. Great Basin Rabbitbrush.

McCarty Butte, Lake County, Oregon. Roadside beside Oregon Highway 31, 4.7 km. east of McCarty Butte, the nearest GNIS-recognized geographical feature, 33 miles southeast of La Pine, Oregon. 43.32194°N, 121.17361°W. WGS 1984 Elev. 1379 m.

Tom Schweich 3539.

30-Sep-2025

Coll. No. 3539, 30 September 2025, characters observed: Perennial shrub, 40 cm.; Stem, proximal, dull white, tomentose, resinous, almost to the involucres; Leaves, cauline, alternate, sessile, blade 20-37 mm. × (barely) 1 mm. wide, reduced distally, sulcate (not flat), linear, entire, tomentose; Heads, discoid; Involucre, 10 mm. × 4 mm. wide, obconic, glabrous; Phyllaries, unequal, 4±-series, outer << rest of involucre, inner 7-9 mm. × 1.8-1.2 mm. wide, glabrous, mid-vein, ±raised, visible along length, margins, flat, scarious, tips, acute; Receptacle, epaleate; Flowers of 1 kind; Disk flowers, #5±, tube 8-9 mm. + lobes 1 mm., yellow, throat expanding gradually, few short hairs proximally, otherwise glabrous; Pappus, many, well-developed bristles, 7 mm., ±equal; Anther, base rounded; Style, filiform, 2-branched, brush-like appendages, style 8.63 mm. + stigma 1.75 mm. + appendage 1.3 mm. (n=4); Stigma, > style appendages; Cypsela, 4-6 mm. × 0.6 mm. wide, compressed front-to-back, brown, hairy. Corolla lobes short for var. oreophila, but otherwise that seems to be the best fit.

Coll. No. 3539, Ericameria nauseosa var. oreophila.

Locations: Yachats.
Sunny morning in Yachats.
Sunny morning in Yachats.

Sunny morning in Yachats.

Other articles:
• U. S. Highway 101: at Strawberry Hill;

Locations: Strawberry Hill.
The coast at Strawberry Hill.

Strawberry Hill

Literature Cited:
- Negrini, Robert M., Jonathan O. Davis, and Kenneth L. Verosub, 1984.

Other articles:
• Oregon Route 31: at Summer Lake;

Locations: Summer Lake.

Summer Lake

About 10 km north of the present (Summer Lake) lake margin, the Ana River has eroded into fine-grained lacustrine sediments and has exposed as much as 16 m of vertical section. The nature of these sediments and their paleomagnetic signal strongly suggest that the zone of anomalous directions represents actual geomagnetic field behavior that corresponds with the record from Mono Lake (Negrini, Davis, and Verosub, 1984).

Cliffs above Summer Lake.

Other articles:
• Oregon Route 31: at NF 29;
View to the southeast past Harvey Ranch to the south end of Summer Lake.
View to the north along the west side of Summer Lake.

Stopped for a couple photos at Government Harvey Road.

October 2025

Wednesday, 1 October 2025

Lakeview, OR to Salt Lake City, UT

Other articles:
• Oregon Route 140: 72900;

Locations: Parsnip Creek.
Oregon Highway 140 traverses the Parsnip Creek watershed.

Along Parship Creek.

Other articles:
• Oregon Route 140: at Doherty Slide;

Locations: Doherty Slide.
Oregon Highway 140 climbs Doherty Slide from Guano Valley onto Guano Rim.

Doherty Slide on the Guano Rim.

Other articles:
• Interstate 80: near Pequop Mtns;

Locations: Pequop Mountains.
Pequop Mountains from the west.

Other articles:
• Interstate 80: on the downhill;
Descending the Pequop Mountains eastbound, Pilot Peak in the left distance.

Other articles:
• Interstate 80: near Arnold;
One of several wildlife bridges in this area.

Wildlife bridge in the Toana Range.

Other articles:
• Interstate 80: near Wendover;
The descent into Wendover.

The descent into Wendover.

Thursday, 2 October 2025

Salt Lake City, UT to Golden, CO

Tuesday, 7 October 2025

Coll. No. 3540, Ambrosia trifida.

3540

~~Cyclachena xanthiifolia~~. Ambrosia trifida.

Native and Naturalized Flora of the Golden Area, Jefferson County, Colorado Asteraceae

Ambrosia trifida L. Giant Ragweed.

Golden, Jefferson County, Colorado. North edge of privately-owned vacant land at approximately 1300 Avery Street. 39.77806°N, 105.23349°W. WGS 1984 Immediately adjacent to asphalt driveway with Ambrosia psilostachya. Coordinates estimated with GoogleEarth. Encountered as part of a native plant rescue activity.

Collected by permit: Chris Ball, Owner, 2025, issued: Jul 1, 2025, to: Golden Weedbusters.

Tom Schweich 3540.

7-Oct-2025

Coll. No, 3540, 7 Oct 2025, characters observed: Annual, 60 cm.; Stem, erect; Leaves, opposite, petioles 4-8 mm., unlobed or palmately 3-lobed, unlobed, ellipto-lanceolate, 75 mm. × 21 mm. wide, margin crenate-serrate, adaxial green papillose-hispid, abaxial green papillose hispid; Pistillate heads, clustered in axils; Staminate heads, peduncles 1-1.3 mm., involucres cup-shaped, with black nerves; Burs, obpyramidal, body 5 mm. × 3 mm. wide + beak 3 mm. = 8 mm., spines, 5 in one series, distal.

Other articles:
• Kinney Run Trail: at sm. hill;

Locations: Kinney Run.
The stump of the large juniper, showing a broad area of duff.

Wednesday, 8 October 2025

Raw/random notes on Wildfire Mitigation in Kinney Run

On Wednesday October 8, 2025, I walked Kinney Run to review the results of a Wildfire Mitigation Program.

According to my records I have previously been in Kinney Run for the purpose of examining vegetation or collecting plants fifteen times: 12 Apr 2018, 16 May 2018, 7 July 2018, 2 Jun 2019, 26 Oct 2019, 27 Apr 2020, May 15, 2020, 24 July 2020, 31 Jul 2020, 11 Aug 2020, 17 Aug 2020, 28 Aug 2020, 8 May 2021, 30 Mar 2023, and 4 Sep 2024.

In general it appears to me that about half the Rocky Mountain juniper (Juniperus scopulorum Sarg.) biomass was removed, taking primarily large trees.

Unfortunately, a large juniper was removed at the northern end of the slick rock. This juniper grew in a fracture of the slick rock. There was slick rock entirely behind the tree, and the tip of the tree was below the top of the ridge. It is unclear why this juniper was taken when others of similar size and closer to houses were left behind. This juniper was specifically requested to remain by Stewards. It is a known resting-place for wildlife. I have a video of a coyote flushed from under this juniper. Trunk diameter at the stump was 14 inches. A preliminary count of rings on the stump shows that this juniper was a minimum of 70 years old. I found four roundtip twinpod (Physaria vitulifera Rydb) that were within the drip line of former tree. Roundtip twinpod is a tracked Colorado rare plant G3/S3: Vulnerable, found locally in a restricted range. The plants appear to have survived removal of the tree; only one showed signs of damage. There were also weeds within the drip line of the former tree: including mullein, hound’s tongue, and myrtle spurge. These weeds are now exposed to full sun in rich soil derived from juniper duff. Will they now overrun the roundtip twinpod?

At the south end, a significant amount of cover for large mammals was removed. The vegetation at the south end, just north of Tripp Ranch, in an area where much box elder (Acer negundo L., Golden’s native maple) was removed, I previously observed a bobcat resting in this area. Other hikers on the trail stated that the bobcat also had two kittens, though I did not see them.

Along the trail to the north, the box elders on the east side of the trail have been thinned. I think this might be considered an improvement as it gives the trail a more open feel.

At the hops (Humulus neomexicanus (A. Nelson & Cockerell) Rydb.) location, some hawthorn (Crataegus succulenta Schrad. ex Link.) has been pulled out, but other dead stems supporting the hops vines were left in place. Well done! I would note though that there are many weeds here, including Canada thistle, teasel, mullein, and hound’s tongue.

The Siberian elms (Ulmus pumila L., Noxious List C) appear to have been left in place, with light pruning in some cases. If the elms were cut down the stumps would have to be treated to prevent regrowth.

In the limestone quarry, junipers with stumps of 14 inches and 12 inches were cut down whereas two trees with 6” DBH were allowed to remain. Given the location relative to houses, this seems reasonable.

Large juniper that was removed.

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Date and time this article was prepared: 1/24/2026 11:37:57 AM