2021

Ranunculus testiculatus Crantz.  Bur Buttercup.

Clear Creek, Jefferson County, Colorado. Along the City of Golden Clear Creek Trail, in the gravel between the concrete trail and the Clear Creek RV Park, 1.4 km. west of the GNIS location of Golden. 39.7532°N, 105.233°W. WGS 1984 Elev. 1739 m.

Collected by permit: City of Golden, 2021, issued: Jan 27, 2021, to: Tom Schweich.

Amelanchier alnifolia (Nutt.) Nutt. ex M. Roem.  Saskatoon Serviceberry.

Clear Creek Canyon Park, Jefferson County, Colorado. Along the Welch Ditch, about 100 m. west of the junction with the Climbing Access Trail, north of and below the ditch, 2.5 km. west of the GNIS location of Golden. 39.7523°N, 105.2429°W. WGS 1984 Elev. 1767 m. Many shrubs to 2 m. height, reddish-brown stems 3-4 cm. in diameter.

Collected by permit: Jefferson County Open Space, 2020, issued: Apr 13, 2020, to: Tom Schweich.

Berberis repens Lindl.  Creeping Barberry.

Clear Creek Canyon Park, Jefferson County, Colorado. Mouth of Clear Creek Canyon, steep north-facing slope above the Welch Ditch, about 265 m. west of junction with climbing access trail, 2.6 km. west of the GNIS location of Golden. 39.7521°N, 105.2443°W. WGS 1984 Elev. 1764 m. With Amelanchier alnifolia, Prunis virginiana, and Betula occidentalis.

Collected by permit: Jefferson County Open Space, 2021, issued: Apr 1, 2021, to: Tom Schweich.

Betula occidentalis Hook.  Water Birch.

Clear Creek Canyon Park, Jefferson County, Colorado. Mouth of Clear Creek Canyon, south side of the canyon, i.e., north-facing slopes, along the Welch Ditch, lower side of concrete ditch wall, about 215 m west of the junction with the climbing access trail, 2.6 km. west of the GNIS location of Golden. 39.7522°N, 105.2439°W. WGS 1984 Elev. 1764 m. Also collected nearby: Acer glabrum, Aletes acaulis, Jamesia americana, and Amelanchier alnifolia. This one, below the ditch, looked pretty good, several birches above the ditch were looking poor.

Collected by permit: Jefferson County Open Space, 2021, issued: Apr 1, 2021, to: Tom Schweich.

Ribes cereum Douglas.  Wax Currant.

Clear Creek Canyon Park, Jefferson County, Colorado. Mouth of Clear Creek Canyon, south side of the canyon, i.e., north-facing slopes, along the Welch Ditch, in bed of the now unused ditch, 2.28 km. west of the GNIS location of Golden. 39.7521°N, 105.2411°W. WGS 1984 Elev. 1771 m.

Collected by permit: Jefferson County Open Space, 2021, issued: Apr 1, 2021, to: Tom Schweich.

Acer negundo L.  Box Elder Maple.

Clear Creek, Jefferson County, Colorado. Mouth of Clear Creek Canyon, south side of the canyon, i.e., north-facing slopes, along the Welch Ditch, on berm of ditch, 2.2 km. west of the GNIS location of Golden. 39.7519°N, 105.2403°W. WGS 1984 Elev. 1777 m. Staminate flowers. Collection location is in both Golden s.l. and Clear Creek Canyon Park of Jefferson County Open Space. Variety interius if infraspecific names are to be applied.

Collected by permit: Jefferson County Open Space, 2021, issued: Apr 1, 2021, to: Tom Schweich.

Acer glabrum Torr.  Rocky Mountain Maple.

Clear Creek Canyon Park, Jefferson County, Colorado. Mouth of Clear Creek Canyon, south side of the canyon, i.e., north-facing slopes, along the Welch Ditch, on bank of ditch, 2.2 km. west of the GNIS location of Golden. 39.7519°N, 105.2402°W. WGS 1984 Elev. 1774 m. Flowering. Retaining some fruit from last year. Collection location is in both Golden s.l. and Clear Creek Canyon Park of Jefferson County Open Space.

Collected by permit: Jefferson County Open Space, 2021, issued: Apr 1, 2021, to: Tom Schweich.

Prunus americana Marshall.  American Plum.

Clear Creek Canyon Park, Jefferson County, Colorado. Mouth of Clear Creek Canyon, south side of the canyon, i.e., north-facing slopes, along the Welch Ditch, on the ditch, 1.8 km. west of the GNIS location of Golde. 39.7516°N, 105.2364°W. WGS 1984 Elev. 1776 m. Fragrant, in full flower, with leaves emerging. Coordinates estimated with GoogleEarth. Location is within Golden s.l. and Jefferson County Clear Creek Canyon Park.

Collected by permit: Jefferson County Open Space, 2021, issued: Apr 1, 2021, to: Tom Schweich.

Anemone patens L. var. multifida Pritzel.  Eastern Pasqueflower.

Lippincott Ranch (North), Boulder County, Colorado. Park jointly owned by Jefferson County Open Space and City of Boulder Open Space and Mountain Parks, northernmost area near Spring Brook, 23.8 km. north northwest of the GNIS location of Golden. 39.9145°N, 105.2768°W. WGS 1984 Elev. 2006 m. Plants in bud and flower; leaves from last year. On a north-facing grassy slope.

Collected by permit: Jefferson County Open Space, 2021, issued: Apr 1, 2021, to: Tom Schweich.

Claytonia rosea Rydb.  Rocky Mountain Springbeauty.

Lippincott Ranch (North), Boulder County, Colorado. Park jointly owned by Jefferson County Open Space and City of Boulder Open Space and Mountain Parks, on a ridge between Spring Brook and its northern branch, 24.1 km. north northwest of the GNIS location of Golden. 39.9163°N, 105.2769°W. WGS 1984 Elev. 2001 m. Openings in Ponderosa pine woodland, thin forest duff.

Collected by permit: Jefferson County Open Space, 2021, issued: Apr 1, 2021, to: Tom Schweich.

Euphorbia myrsinites L.  Myrtle Spurge.

Colorado School of Mines Survey Field, Jefferson County, Colorado. Along the southern boundary of the Survey Field, low ridge between two watercourses, 3.28 km. south of the GNIS location of Golden. 39.7329°N, 105.2218°W. WGS 1984 Elev. 1844 m. In flower. Patch about 20 meters across. Also collected nearby: Lupinus argenteus, Rosa acicularis, Symphoricarpos rotundifolius, and Bromus japonicus.

Collected by permit: Colorado School of Mines, 2021, issued: Apr 1, 2021, to: Tom Schweich.

Acer negundo L.  Box Elder Maple.

Colorado School of Mines Survey Field, Jefferson County, Colorado. Southeastern sector of Survey Field, small terrace above ephemeral stream, 3.03 km. south of the GNIS location of Golden. 39.7346°N, 105.2203°W. WGS 1984 Elev. 1811 m. Pistillate specimen. Single tree in grassland. Variety interius if infraspecific names are to be applied. Compare to Coll. No. 2451, which was staminate.

Collected by permit: Colorado School of Mines, 2021, issued: Apr 1, 2021, to: Tom Schweich.

Prunus americana Marshall.  American Plum.

Colorado School of Mines Survey Field, Jefferson County, Colorado. Southeast corner of survey field, just above an unnamed ephemeral stream, 2.94 km. south of the GNIS location of Golden. 39.7353°N, 105.2193°W. WGS 1984 Elev. 1804 m. In flower, fragrant, leaves just beginning to emerge. Also collected nearby: Equisetum laevigatum, Conium maculatum, Harbouria trachypleura, Lithospermum occidentale, Eleagnus angustifolia, Crataegus succulenta, and Acer negundo.

Collected by permit: Colorado School of Mines, 2021, issued: Apr 1, 2021, to: Tom Schweich.

Dodecatheon pulchellum (Raf.) Merr.  Beautiful Shootingstar.

Clear Creek Canyon Park, Jefferson County, Colorado. About 50 m. south of the Welch Ditch, up one of the larger gulches on the south side of Clear Creek, 2.4 km. west of the GNIS location of Golden. 39.7518°N, 105.2421°W. WGS 1984 Elev. 1789 m. Beside ephemeral stream, 80± plants, flowers just starting to open.

Collected by permit: Jefferson County Open Space, 2021, issued: Apr 1, 2021, to: Tom Schweich.

Rhus trilobata Nutt. var. trilobata.  Skunkbush Sumac.

Clear Creek Canyon Park, Jefferson County, Colorado. About 80 m. south of the Welch Ditch, up one of the larger gulches on the south side of Clear Creek, 2.4 km. west of the GNIS location of Golden. 39.7517°N, 105.2423°W. WGS 1984 Elev. 1803 m. Leaves emerging. Flowering. East-facing slope, with Cercocarpus montanus. Leaves and young twigs pubescent, not pilose.

Collected by permit: Jefferson County Open Space, 2021, issued: Apr 1, 2021, to: Tom Schweich.

Rubus deliciosus Torr.  Delicious raspberry.

Clear Creek Canyon Park, Jefferson County, Colorado. Mouth of Clear Creek Canyon, south side, on the Welch Ditch above Clear Creek, at the mouth of a large gulch, 2.34 km. west of the GNIS location of Golden. 39.7521°N, 105.2418°W. WGS 1984 Elev. 1782 m. Flowering. Also collected nearby: Rhus trilobata, Ribes cereum, Cercocarpus montanus, Cotoneaster lucidus, and Prunus virginiana.

Collected by permit: Jefferson County Open Space, 2021, issued: Apr 1, 2021, to: Tom Schweich.

Ribes cereum Douglas.  Wax Currant.

Clear Creek Canyon Park, Jefferson County, Colorado. Mouth of Clear Creek Canyon, south side, on the Welch Ditch above Clear Creek, at the mouth of a large gulch, 2.34 km. west of the GNIS location of Golden. 39.7521°N, 105.2417°W. WGS 1984 Elev. 1775 m. Flowering. Also collected nearby: Rhus trilobata, Cercocarpus montanus, Cotoneaster lucidus, Rubus deliciosus and Prunus virginiana.

Collected by permit: Jefferson County Open Space, 2021, issued: Apr 1, 2021, to: Tom Schweich.

Prunus virginiana L.  Chokecherry.

Clear Creek Canyon Park, Jefferson County, Colorado. Mouth of Clear Creek Canyon, south side, on the Welch Ditch above Clear Creek, at the mouth of a large gulch, 2.38 km. west of the GNIS location of Golden. 39.7522°N, 105.242°W. WGS 1984 Elev. 1773 m. Large shrub. Flowering. Also collected nearby: Rhus trilobata, Ribes cereum, Cercocarpus montanus, Cotoneaster lucidus, and Rubus deliciosus.

Collected by permit: Jefferson County Open Space, 2021, issued: Apr 1, 2021, to: Tom Schweich.

Erigeron vetensis Rydb.  Early Bluetop Fleabane.

Hankins Gulch, Jefferson County, Colorado. Slopes above Hankins Gulch near its mouth on Goose Creek, area burned by Hayman fire of 2002, 86 km. south-southwest of Golden. 39.1724°N, 105.3836°W. WGS 1984 Elev. 2527 m. Downed ponderosa pines, with Packera werneriifolia, E. compositus, Clematis columbiana, Cymopterus anisatus, and Arctostaphylos uva-ursi.

Collected by permit: Pike - San Isabel National Forest, 2021, issued: Mar 29, 2021, to: Tom Schweich.

Antennaria parvifolia Nutt.  Small-Leaf Pussytoes.

Hankins Gulch, Jefferson County, Colorado. Slopes above Hankins Gulch near its mouth on Goose Creek, area burned by Hayman fire of 2002, 86 km. south-southwest of Golden. 39.1733°N, 105.3818°W. WGS 1984 Elev. 2534 m. Downed ponderosa pines, with Packera werneriifolia, E. compositus, Clematis columbiana, Cymopterus anisatus, and Arctostaphylos uva-ursi.

Collected by permit: Pike - San Isabel National Forest, 2021, issued: Mar 29, 2021, to: Tom Schweich.

Packera werneriifolia (A. Gray) W. A. Weber & Á. Löve.  Hoary Groundsel.

Hankins Gulch, Jefferson County, Colorado. Slopes above Hankins Gulch near its mouth on Goose Creek, area burned by Hayman fire of 2002, 86 km. south-southwest of Golden. 39.1731°N, 105.3812°W. WGS 1984 Elev. 2523 m. Downed ponderosa pines, with Erigeron vetensis, E. compositus, Clematis columbiana, Cymopterus anisatus, and Arctostaphylos uva-ursi.

Collected by permit: Pike - San Isabel National Forest, 2021, issued: Mar 29, 2021, to: Tom Schweich.

Erigeron compositus Pursh.  Cutleaf Daisy.

Hankins Gulch, Jefferson County, Colorado. Slopes above Hankins Gulch near its mouth on Goose Creek, area burned by Hayman fire of 2002, 86 km. south-southwest of Golden. 39.1741°N, 105.3792°W. WGS 1984 Elev. 2490 m. Downed ponderosa pines, with Antennaria parvifolia, Erigeron vetensis, Clematis columbiana, Cymopterus anisatus, and Arctostaphylos uva-ursi.

Collected by permit: Pike - San Isabel National Forest, 2021, issued: Mar 29, 2021, to: Tom Schweich.

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

Goose Creek, Jefferson County, Colorado. Slopes above Hankins Gulch near its mouth on Goose Creek, area burned by Hayman fire of 2002, 86 km. south-southwest of Golden. 39.1786°N, 105.3874°W. WGS 1984 Elev. 2513 m. Downed ponderosa pines, with Antennaria parvifolia, Erigeron compositus, Erigeron vetensis, Clematis columbiana, and Cymopterus anisatus.

Collected by permit: Pike - San Isabel National Forest, 2021, issued: Mar 29, 2021, to: Tom Schweich.

Oxytropis multiceps Nuttall.  Southwestern Locoweed.

Goose Creek, Jefferson County, Colorado. Just north of and above Goose Creek on the east side of Forest Road 211, 85 km. south southwest of the GNIS location of Golden. 39.1748°N, 105.3611°W. WGS 1984 Elev. 2437 m. Very dense population on the cut bank above the road.

Collected by permit: Pike - San Isabel National Forest, 2021, issued: Mar 29, 2021, to: Tom Schweich.

Collinsia parviflora Lindl.  Maiden Blue-eyed Mary.

Cressmans Gulch (lower), Jefferson County, Colorado. Northwest corner of Golden, in recently deposited silt in channel of Cressmans Gulch, 60 m. downstream from Pine Ridge Road, 4.51 km. northwest of the GNIS location of Golden. 39.7831°N, 105.2399°W. WGS 1984 Elev. 1869 m. Also collected nearby: in the gulch: Veronica biloba; above the gulch: Lupinus argenteus, Euphorbia esula, Lithospermum arvense, Poa pratensis, and Secale cereale.

Collected by permit: City of Golden, 2021, issued: Jan 27, 2021, to: Tom Schweich.

Veronica biloba L.  Twolobe Speedwell.

Cressmans Gulch (lower), Jefferson County, Colorado. Northwest corner of Golden, in recently deposited silt in channel of Cressmans Gulch, 60 m. downstream from Pine Ridge Road, 4.51 km. northwest of the GNIS location of Golden. 39.7831°N, 105.24°W. WGS 1984 Elev. 1871 m. Also collected nearby: in the gulch: Collinsia parviflora; above the gulch: Lupinus argenteus, Euphorbia esula, Lithospermum arvense, Poa pratensis, and Secale cereale.

Collected by permit: City of Golden, 2021, issued: Jan 27, 2021, to: Tom Schweich.

Cryptantha Lehm. ex G. Don.  Cryptantha.

Cressmans Gulch (lower), Jefferson County, Colorado. 39.7831°N, 105.24°W. WGS 1984 Elev. 1871 m.

Collected by permit: City of Golden, 2021, issued: Jan 27, 2021, to: Tom Schweich.

Lithospermum arvense L.  Corn Gromwell.

Cressmans Gulch (lower), Jefferson County, Colorado. Northwest corner of Golden, strath above Cressmans Gulch, 115 m. downstream from Pine Ridge Road, 4.46 km. northwest of the GNIS location of Golden. 39.783°N, 105.2394°W. WGS 1984 Elev. 1872 m. Weedy place above the channel of Cressman Gulch, with non-natives Medicago sativa, Euphorbia esula, Verbascum thapsus, Bromus inermis, and natives Linum lewisii, Lupinus argenteus, and Pediomelum tenuiflorum.

Collected by permit: City of Golden, 2021, issued: Jan 27, 2021, to: Tom Schweich.

Euphorbia esula L.  Leafy Spurge.

Cressmans Gulch (lower), Jefferson County, Colorado. Northwest corner of Golden, strath above Cressmans Gulch, 115 m. downstream from Pine Ridge Road, 4.46 km. northwest of the GNIS location of Golden. 39.783°N, 105.2394°W. WGS 1984 Elev. 1872 m. Weedy place above the channel of Cressman Gulch, with non-natives Medicago sativa, Lithospermum arvense, Verbascum thapsus, Bromus inermis, and natives Linum lewisii, Lupinus argenteus, and Pediomelum tenuiflorum. Plants are growing in plastic mesh suggesting this area was subjected to revegetation in the past. Colorado Noxious Weed List B.

Collected by permit: City of Golden, 2021, issued: Jan 27, 2021, to: Tom Schweich.

Thermopsis rhombifolia (Nutt. ex Pursh) Nutt. ex Richardson var. divaricarpa (A. Nelson) Isely.  Spreadfruit Goldenbanner.

Dakota Ridge, Jefferson County, Colorado. Northwestern corner of Golden, south end of Dakota Ridge, a hogback that is structurally a continuation of Dinosaur Ridge, west limb at the south end on a small parcel owned by the City of Golden, 4.32 km. north northwest of the GNIS location of Golden. 39.7823°N, 105.2381°W. WGS 1984 Elev. 1893 m. Mostly mixed grasses and forbs below the Cercocarpus montanus belt, with Celtis reticulata, Rhus trilobata, Potentilla fissa, Grindelia squarrosa, and Gutierrezia sarothrae.

Collected by permit: City of Golden, 2021, issued: Jan 27, 2021, to: Tom Schweich.

Potentilla fissa Nutt. ex Torr. & A.Gray.  Bigflower Cinquefoil.

Dakota Ridge, Jefferson County, Colorado. Northwestern corner of Golden, south end of Dakota Ridge, a hogback that is structurally a continuation of Dinosaur Ridge, west limb at the south end on a small parcel owned by the City of Golden, 4.30 km. north northwest of the GNIS location of Golden. 39.7823°N, 105.2379°W. WGS 1984 Elev. 1892 m. Mostly mixed grasses and forbs just below the Cercocarpus montanus belt, with Celtis reticulata, Rhus trilobata, Thermopsis rhombifola var. divaricarpa, Grindelia squarrosa, and Gutierrezia sarothrae. In fractures in rocks of an outcrop identified by a local geologist as Lykins conglomerate.

Collected by permit: City of Golden, 2021, issued: Jan 27, 2021, to: Tom Schweich.

Lithospermum arvense L.  Corn Gromwell.

Tucker Gulch (lower), Jefferson County, Colorado. Along the City of Golden Tucker Gulch Trail between 1st Street and 7th Place, 1.45 km. north northwest of the GNIS location of Golden. 39.7651°N, 105.2252°W. WGS 1984 Elev. 1756 m. Scattered in grasses under trees, also collected here: Asperugo procumbens, Alliaria petiolata, Lunaria annua, and Veronica biloba.

Collected by permit: City of Golden, 2021, issued: Jan 27, 2021, to: Tom Schweich.

Lunaria annua L.  Money Plant.

Tucker Gulch (lower), Jefferson County, Colorado. On both banks of Tucker Gulch near the City of Golden Tucker Gulch Trail between 1st Street and 7th Place, 1.45 km. north northwest of the GNIS location of Golden. 39.7651°N, 105.2252°W. WGS 1984 Elev. 1756 m. Flower, with partially developed fruit. Nautralized.

Collected by permit: City of Golden, 2021, issued: Jan 27, 2021, to: Tom Schweich.

Fumaria vaillantii Loisel.  Earthsmoke.

Tucker Gulch (lower), Jefferson County, Colorado. On east bank of Tucker Gulch near the City of Golden Tucker Gulch Trail between 1st Street and 7th Place, 1.51 km. north northwest of the GNIS location of Golden. 39.7654°N, 105.2255°W. WGS 1984 Elev. 1767 m. Slope above creek. Very few plants here, but more on the north bank of Clear Creek, cf., my Coll. No. 2484.

Collected by permit: City of Golden, 2021, issued: Jan 27, 2021, to: Tom Schweich.

Alliaria petiolata (M. Bieb.) Cavara & Grande.  Garlic Mustard.

Tucker Gulch (lower), Jefferson County, Colorado. On east bank of Tucker Gulch near the City of Golden Tucker Gulch Trail between 1st Street and 7th Place, 1.49 km. north northwest of the GNIS location of Golden. 39.7653°N, 105.2255°W. WGS 1984 Elev. 1763 m. Also collected nearby: Lithospermum arvense, Lunaria annua, Fumaria vaillantii, and Veronica biloba. Colorado Noxious Weed Watch List.

Collected by permit: City of Golden, 2021, issued: Jan 27, 2021, to: Tom Schweich.

Veronica biloba L.  Twolobe Speedwell.

Tucker Gulch (lower), Jefferson County, Colorado. In a sunny spot beside the city of Golden Tucker Gulch Trail, between 1st Street and 7th Place, 1.54 km. north northwest of the GNIS location of Golden. 39.7656°N, 105.2257°W. WGS 1984 Elev. 1769 m. Also collected nearby: Lithospermum arvense, Alliaria petiolata, Lunaria annua, and Fumaria vaillantii.

Collected by permit: City of Golden, 2021, issued: Jan 27, 2021, to: Tom Schweich.

Asperugo procumbens L.  German Madwort.

Tucker Gulch (lower), Jefferson County, Colorado. Along the City of Golden Tucker Gulch Trail, about mid-way between 1st Street and 7th Place, 1.36 km. north northwest of the GNIS location of Golden. 39.7646°N, 105.2245°W. WGS 1984 Elev. 1761 m. Annual, flowers blue-purple. Also collected nearby: Lithospermum arvense, Alliaria petiolata, Lunaria annua, Veronica biloba, and Fumaria vaillantii. At the south end of a bridge over the gulch, on a bank above creek, extending from the edge of the concrete trail nearly down to the creek.

Collected by permit: City of Golden, 2021, issued: Jan 27, 2021, to: Tom Schweich.

Fumaria vaillantii Loisel.  Earthsmoke.

Vanover Park, Jefferson County, Colorado. North bank of Clear Creek between Tucker Gulch and Ford Street, 415 m. north east of the GNIS location of Golden. 39.7581°N, 105.2195°W. WGS 1984 Elev. 1728 m. Under willows next to Clear Creek, and under the fence on the bridge abutment; persistent here because this collection duplicates Stanley Smookler #54, 16 May 1993 ( KHD12404).

Collected by permit: City of Golden, 2021, issued: Jan 27, 2021, to: Tom Schweich.

Euphorbia brachycera Engelm.  Horned Spurge.

North Table Mountain Park, Jefferson County, Colorado. Beside informal horse trail along the northern boundary of the park, 6.28 km. north northeast of the GNIS location of Golden. 39.798°N, 105.2098°W. WGS 1984 Elev. 1805 m. In mixed grasses and forbs. Also seen next to North Table Loop trail.

Collected by permit: Jefferson County Open Space, 2021, issued: Apr 1, 2021, to: Tom Schweich.

Scutellaria brittonii Porter.  Britton's Skullcap.

North Table Mountain Park, Jefferson County, Colorado. Northern part of park, along an informal horse trail, 6.24 km. north northeast of the GNIS location of Golden. 39.7977°N, 105.2093°W. WGS 1984 Elev. 1815 m. Also collected here: Senecio integerrimus, Ellisia nyctelea, Boechera fendleri, Delphinium carolinianum virescens, Potentilla pensylvanica, Viola nuttallii, &c. In a nearly closed depression on the toe of an ancient landslide.

Collected by permit: Jefferson County Open Space, 2021, issued: Apr 1, 2021, to: Tom Schweich.

Ellisia nyctelea (L.) L.  Aunt Lucy.

North Table Mountain Park, Jefferson County, Colorado. Northern part of park, along an informal horse trail, 6.24 km. north northeast of the GNIS location of Golden. 39.7977°N, 105.2093°W. WGS 1984 Elev. 1815 m. Few plants here. Also collected here: Senecio integerrimus, Boechera fendleri, Scutellaria brittonii, Delphinium carolinianum virescens, Potentilla pensylvanica, Viola nuttallii, &c. In a nearly closed depression on the toe of an ancient landslide.

Collected by permit: Jefferson County Open Space, 2021, issued: Apr 1, 2021, to: Tom Schweich.

Phlox multiflora A. Nelson.  Mountain Phlox.

North Table Mountain Park, Jefferson County, Colorado. North slopes of North Table Mountain, along the North Table Loop trail, 6.13 km. north northeast of the GNIS location of Golden. Closest access point is the neighborhood access trail on W. 53rd Drive. 39.7954°N, 105.2022°W. WGS 1984 Elev. 1836 m. Flowers pink to white, fading blue. Also observed and collected on slopes above the North Table Loop from this point west to the power lines.

Collected by permit: Jefferson County Open Space, 2021, issued: Apr 1, 2021, to: Tom Schweich.

Physocarpus monogynus (Torr.) J.M. Coult.  Mountain Ninebark.

North Table Mountain Park, Jefferson County, Colorado. North slopes of North Table Mountain, along the North Table Loop trail, 6.13 km. north northeast of the GNIS location of Golden. Closest access point is the neighborhood access trail on W. 53rd Drive. 39.7953°N, 105.2024°W. WGS 1984 Elev. 1835 m. In flower. Also collected here: Phlox multiflora.

Collected by permit: Jefferson County Open Space, 2021, issued: Apr 1, 2021, to: Tom Schweich.

Carex nebrascensis Dewey.  Nebraska Sedge.

Lippincott Ranch, Jefferson County, Colorado. Central part of ranch, at the south end of the clay pit, where the emphemeral stream has been diverted through the pit, 22.2 km. north northwest of Golden. 39.9027°N, 105.2751°W. WGS 1984 Elev. 2000 m. Growing in flowing water. Also collected nearby: Erigeron flagellaris, Astragalus agrestis, Trifolium repens, Prunella vulgaris, Juncus bufonius, and Alopecurus carolinianus. Jointly owned by City of Boulder Open Space and Mountain Parks and Jefferson County Open Space.

Collected by permit: Jefferson County Open Space, 2021, issued: Apr 1, 2021, to: Tom Schweich.

Salix irrorata Andersson.  Dewystem Willow.

Lippincott Ranch, Jefferson County, Colorado. Central part of ranch near the former clay mine headquarters, beside a former stream channel now abandoned to the new route through the clay pit, 22.1 km north northwest of Golden. 39.9025°N, 105.2749°W. WGS 1984 Elev. 2001 m. Shrub to 2 m., stems yellow brown, prior year's pruinose. Also collected nearby: Erigeron flagellaris, Astragalus agrestis, Trifolium repens, Prunella vulgaris, Carex nebrascensis, Juncus bufonius, and Alopecurus carolinianus. Jointly owned by City of Boulder Open Space and Mountain Parks and Jefferson County Open Space.

Collected by permit: Jefferson County Open Space, 2021, issued: Apr 1, 2021, to: Tom Schweich.

Astragalus agrestis Douglas ex G. Don.  Purple Milkvetch.

Lippincott Ranch, Jefferson County, Colorado. Central part of ranch, at the south end of the clay pit, where the emphemeral stream has been diverted through the pit, 22.2 km. north northwest of Golden. 39.9028°N, 105.2751°W. WGS 1984 Elev. 2003 m. Colonizing a small spoils pile in former clay mine, heavy clay soil, rhizomes not found to 5 inch depth Also collected nearby: Erigeron flagellaris, Trifolium repens, Prunella vulgaris, Carex nebrascensis, Juncus bufonius, and Alopecurus carolinianus. Jointly owned by City of Boulder Open Space and Mountain Parks and Jefferson County Open Space.

Collected by permit: Jefferson County Open Space, 2021, issued: Apr 1, 2021, to: Tom Schweich.

Anthriscus caucalis M. Bieb.  Bur Chervil.

Lippincott Ranch, Jefferson County, Colorado. In the narrow “wasp waist” part of the ranch, 525 m. northwest of the main gate, 22.1 km. north northwest of the GNIS location of Golden. 39.902°N, 105.2766°W. WGS 1984 Elev. 2016 m. Under ponderosa pines, with Pseudostellaria. Coordinates estimated with GoogleEarth. Lippincott Ranch is jointly owned by City of Boulder Open Space and Mountain Parks and Jefferson County Open Space.

Collected by permit: Jefferson County Open Space, 2021, issued: Apr 1, 2021, to: Tom Schweich.

Myosotis micrantha Pall. ex Lehm.  Small-Flowered Forget-Me-Not.

Lippincott Ranch, Jefferson County, Colorado. West-central portion of ranch, in rocky grassland below the ponderosa pines. 22.2 km. north northwest of the GNIS location of Golden. 39.9022°N, 105.2782°W. WGS 1984 Elev. 2047 m. Abaxial leaf hairs hooked, esp. on midrib. About 200 m. east of my Coll. No. 2154 of same taxon. Small colony below rocks. Also here: Amorpha nana, Ceanothus herbaceus, Gentiana affinis, Solidago rigida, and Symphyotrichum ericoides. Jointly owned by City of Boulder Open Space and Mountain Parks and Jefferson County Open Space.

Collected by permit: Jefferson County Open Space, 2021, issued: Apr 1, 2021, to: Tom Schweich.

Poa fendleriana (Steud.) Vasey.  Muttongrass.

Lippincott Ranch, Jefferson County, Colorado. Southwest corner of the ranch, near the railroad tracks, in deep ponderosa pine forest duff, 22.3 km. north northwest of the GNIS location of Golden. 39.9018°N, 105.2815°W. WGS 1984 Elev. 2084 m. Also seen or collected nearby: Juniperus communis, J. scopulorum, Pinus ponderosa with Arceuthobium vaginatum, Hieracium albiflorum, Berberis repens, and Corallorhiza maculata.

Collected by permit: Jefferson County Open Space, 2021, issued: Apr 1, 2021, to: Tom Schweich.

Maianthemum racemosum (L.) Link ssp. amplexicaule (Nutt.) LaFrankie.  Feathery False Lily of the Valley.

Lippincott Ranch, Jefferson County, Colorado. Southwestern corner of the ranch, just below the railroad, on wooded northwest slope with ponderosa pine and Juniperus communis, 22.3 km. north northwest of the GNIS location of Golden. 39.9019°N, 105.2817°W. WGS 1984 Elev. 2099 m. Also seen or collected nearby: Arnica cordifolia, Pseudognaphalium macounii, and Pterospora andromedea.

Collected by permit: Jefferson County Open Space, 2021, issued: Apr 1, 2021, to: Tom Schweich.

Acer glabrum Torr.  Rocky Mountain Maple.

Lippincott Ranch, Jefferson County, Colorado. Southwestern corner of the ranch, at base of railroad embankment, 22.3 km. north northwest of the GNIS location of Golden. 39.9022°N, 105.2826°W. WGS 1984 Elev. 2060 m. Large tree, multiple trunks, up to 10" d.b.h. Also collected nearby: Corydalis aurea, Brickellia grandiflora, and Polansia dodecandra.

Collected by permit: Jefferson County Open Space, 2021, issued: Apr 1, 2021, to: Tom Schweich.

Betula pendula Roth.  European White Birch.

Lippincott Ranch, Jefferson County, Colorado. Southwest corner of the ranch, bottom of a small gulch, below the railroad embankment, 22.4 km. north northwest of the GNIS location of Golden. 39.9026°N, 105.2821°W. WGS 1984 Elev. 2053 m. Jointly owned by City of Boulder Open Space and Mountain Parks and Jefferson County Open Space.

Collected by permit: Jefferson County Open Space, 2021, issued: Apr 1, 2021, to: Tom Schweich.

Cystopteris fragilis (L.) Bernh.  Brittle Bladderfern.

Lippincott Ranch, Jefferson County, Colorado. -- deferred -- 39.9027°N, 105.2819°W. WGS 1984 Elev. 2067 m. Deep ponderosa pine forest growing from bases of rocks. Jointly owned by City of Boulder Open Space and Mountain Parks and Jefferson County Open Space.

Collected by permit: Jefferson County Open Space, 2021, issued: Apr 1, 2021, to: Tom Schweich.

Hydrophyllum fendleri (A. Gray) A. Heller.  Fendler's Waterleaf.

Lippincott Ranch, Jefferson County, Colorado. Southwest corner of the ranch, along an unnamed intermittent stream tributary to Bull Gulch, 22.5 km. north northwest of the GNIS location of Golden. 39.9038°N, 105.2806°W. WGS 1984 Elev. 2023 m. Also collected nearby: Besseya plantaginea. Jointly owned by City of Boulder Open Space and Mountain Parks and Jefferson County Open Space.

Collected by permit: Jefferson County Open Space, 2021, issued: Apr 1, 2021, to: Tom Schweich.

Clematis hirsutissima Pursh.  Hairy Clematis, Sugar Bowls.

Lippincott Ranch, Jefferson County, Colorado. Southwest corner of the ranch, along an unnamed intermittent stream tributary to Bull Gulch, 22.6 km. north northwest of the GNIS location of Golden. 39.9052°N, 105.2792°W. WGS 1984 Elev. 2014 m. Also collected or seen here: Corylus cornuta, Frasera speciosa, Lonicera tatarica, Ranunculus sceleratus, Besseya plantaginea, and Urtica dioica. Jointly owned by City of Boulder Open Space and Mountain Parks and Jefferson County Open Space.

Collected by permit: Jefferson County Open Space, 2021, issued: Apr 1, 2021, to: Tom Schweich.

Lonicera tatarica L.  Tatarian Honeysuckle.

Lippincott Ranch, Jefferson County, Colorado. Southwest corner of the ranch, along an unnamed intermittent stream tributary to Bull Gulch, in the stream bed, 22.6 km. north northwest of the GNIS location of Golden. 39.9055°N, 105.2789°W. WGS 1984 Elev. 1990 m. Also collected or seen here: Corylus cornuta, Clematis hirsutissima, Frasera speciosa, Ranunculus sceleratus, Besseya plantaginea, Persicaria hydropiper, and Urtica dioica. Jointly owned by City of Boulder Open Space and Mountain Parks and Jefferson County Open Space.

Collected by permit: Jefferson County Open Space, 2021, issued: Apr 1, 2021, to: Tom Schweich.

Barbarea vulgaris R. Br.  Garden Yellowrocket.

Lippincott Ranch, Jefferson County, Colorado. Southwest corner of the ranch, along an unnamed intermittent stream tributary to Bull Gulch, in the stream bed, 22.7 km. north northwest of the GNIS location of Golden. 39.9058°N, 105.2787°W. WGS 1984 Elev. 1988 m. Also seen or collected here, Actaea rubra, Lathryrus sp., and Gratiola neglecta. Jointly owned by City of Boulder Open Space and Mountain Parks and Jefferson County Open Space.

Collected by permit: Jefferson County Open Space, 2021, issued: Apr 1, 2021, to: Tom Schweich.

Actaea rubra (Aiton) Willd.  Red Baneberry.

Lippincott Ranch, Jefferson County, Colorado. Southwest corner of the ranch, on the bank of an unnamed intermittent stream tributary to Bull Gulch, 22.7 km. north northwest of the GNIS location of Golden. 39.9058°N, 105.2787°W. WGS 1984 Elev. 1988 m. Immature, flowers only. Also collected here: Barbarea vularis, and Gratiola neglecta. Jointly owned by City of Boulder Open Space and Mountain Parks and Jefferson County Open Space.

Collected by permit: Jefferson County Open Space, 2021, issued: Apr 1, 2021, to: Tom Schweich.

Lathyrus lanszwertii Kellogg var. laetivirens (Greene ex Rydb.) S. L. Welsh.  Aspen Pea.

Lippincott Ranch, Jefferson County, Colorado. Southwest corner of the ranch, on the bank of an unnamed intermittent stream tributary to Bull Gulch, 22.7 km. north northwest of the GNIS location of Golden. 39.9058°N, 105.2787°W. WGS 1984 Elev. 1990 m. Flowers white with purple veins, tendrils variously coiled. In grasses, also collected nearby: Actaea rubra, Barbarea vulgaris, and Gratiola neglecta. Jointly owned by City of Boulder Open Space and Mountain Parks and Jefferson County Open Space.

Collected by permit: Jefferson County Open Space, 2021, issued: Apr 1, 2021, to: Tom Schweich.

Ribes inerme Rydb.  White Stem Gooseberry.

Bull Gulch, Jefferson County, Colorado. At the base of several boulders on the south side of Bull Gulch, near the location of the ranch road crossing of the gulch, 22.9 km. north northwest of the GNIS location of Golden. 39.9077°N, 105.2767°W. WGS 1984 Elev. 1964 m. Developing fruit. Variety inerme if infraspecific names are to be applied. In Lippincott Ranch, jointly owned by City of Boulder Open Space and Mountain Parks and Jefferson County Open Space.

Collected by permit: Jefferson County Open Space, 2021, issued: Apr 1, 2021, to: Tom Schweich.

Asperugo procumbens L.  German Madwort.

Lippincott Ranch, Jefferson County, Colorado. In the bed of a small intermittent stream near its mouth at Bull Gulch, near the location of the ranch road crossing of the gulch, 22.9 km. north northwest of the GNIS location of Golden. 39.9076°N, 105.2767°W. WGS 1984 Elev. 1964 m. Jointly owned by City of Boulder Open Space and Mountain Parks and Jefferson County Open Space.

Collected by permit: Jefferson County Open Space, 2021, issued: Apr 1, 2021, to: Tom Schweich.

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

Bull Gulch, Jefferson County, Colorado. Lippincott Ranch, gravel bar in Bull Gulch, just upstream of the ranch road crossing of the gulch, 22.9 km. north northwest of the GNIS location of Golden. 39.908°N, 105.277°W. WGS 1984 Elev. 1969 m. Many collections here, such as: Juncus ensifolius, Populus deltoides, Melilotus albus, Trifolium fragiferum, Ribes inerme, Epilobium brachycarpum, and Anaphalis margaritacea. Jointly owned by City of Boulder Open Space and Mountain Parks and Jefferson County Open Space.

Collected by permit: Jefferson County Open Space, 2021, issued: Apr 1, 2021, to: Tom Schweich.

Salix bebbiana Sarg.  Bebb Willow.
   Det. by Tom Schweich, 10/31/2021.

Bull Gulch, Jefferson County, Colorado. In Lippincott Ranch, in stream channel adjacent to sand/gravel/cobble bar, just upstream of the ranch road crossing of Bull Gulch, 23.0 km. north northwest of the GNIS location of Golden 39.9081°N, 105.277°W. WGS 1984 Elev. 1964 m. Many collections here, such as: Juncus ensifolius, Populus deltoides, Melilotus albus, Trifolium fragiferum, Ribes inerme, Chamerion angustifolium, Epilobium brachycarpum, and Anaphalis margaritacea. Jointly owned by City of Boulder Open Space and Mountain Parks and Jefferson County Open Space.

Collected by permit: Jefferson County Open Space, 2021, issued: Apr 1, 2021, to: Tom Schweich.

Dryopteris filix-mas (L.) Schott.  Male Fern.

Bull Gulch, Jefferson County, Colorado. In Lippincott Ranch, in stream channel adjacent to sand/gravel/cobble bar, just upstream of the ranch road crossing of Bull Gulch, 23.0 km. north northwest of the GNIS location of Golden 39.9081°N, 105.277°W. WGS 1984 Elev. 1964 m. Many collections here, such as: Juncus ensifolius, Populus deltoides, Melilotus albus, Trifolium fragiferum, Ribes inerme, Chamerion angustifolium, Epilobium brachycarpum, and Anaphalis margaritacea. Jointly owned by City of Boulder Open Space and Mountain Parks and Jefferson County Open Space.

Collected by permit: Jefferson County Open Space, 2021, issued: Apr 1, 2021, to: Tom Schweich.

Cerastium fontanum Baumgarten ssp. vulgare (Hartman) Greuter & Burdet.  Common Mouse-Ear.

Bull Gulch, Jefferson County, Colorado. In Lippincott Ranch, in stream channel adjacent to sand/gravel/cobble bar, just upstream of the ranch road crossing of Bull Gulch, 23.0 km. north northwest of the GNIS location of Golden 39.9081°N, 105.2771°W. WGS 1984 Elev. 1964 m. Many collections here, such as: Juncus ensifolius, Populus deltoides, Melilotus albus, Trifolium fragiferum, Ribes inerme, Chamerion angustifolium, Epilobium brachycarpum, and Anaphalis margaritacea. Jointly owned by City of Boulder Open Space and Mountain Parks and Jefferson County Open Space.

Collected by permit: Jefferson County Open Space, 2021, issued: Apr 1, 2021, to: Tom Schweich.

Salix monticola Bebb.  Park Willow.

Bull Gulch, Jefferson County, Colorado. In Lippincott Ranch, in stream channel adjacent to sand/gravel/cobble bar, just upstream of the ranch road crossing of Bull Gulch, 23.0 km. north northwest of the GNIS location of Golden. 39.9081°N, 105.2771°W. WGS 1984 Elev. 1964 m. Many collections here, such as: Juncus ensifolius, Populus deltoides, Melilotus albus, Trifolium fragiferum, Ribes inerme, Chamerion angustifolium, Epilobium brachycarpum, Salix bebbiana and Anaphalis margaritacea. Jointly owned by City of Boulder Open Space and Mountain Parks and Jefferson County Open Space.

Collected by permit: Jefferson County Open Space, 2021, issued: Apr 1, 2021, to: Tom Schweich.

Carex occidentalis L. H. Bailey.  Western Sedge.

Bull Gulch, Jefferson County, Colorado. In Lippincott Ranch, on the south bank of Bull Gulch, wet area above the active stream channel, just upstream of the ranch road crossing of Bull Gulch, 23.0 km. north northwest of the GNIS location of Golden. 39.908°N, 105.2772°W. WGS 1984 Elev. 1955 m. Many collections here, such as: Carex nebrascensis, Cerastium fontanum ssp. vulgare, Sisyrinchium montanum, and Juncus bufonius. Jointly owned by City of Boulder Open Space and Mountain Parks and Jefferson County Open Space.

Collected by permit: Jefferson County Open Space, 2021, issued: Apr 1, 2021, to: Tom Schweich.

Physaria vitulifera × bellii.  Twinpod Hybrid.

Dinosaur Ridge, Jefferson County, Colorado. On the Dakota Ridge Trail, 180 m. north of Alameda Parkway, 11.8 km south of the GNIS location of Golden. 39.677°N, 105.193°W. WGS 1984 Elev. 1916 m. Five or six plants under Cercocarpus montanus, and between two branches of the Dakota Ridge Trail.

Collected by permit: Jefferson County Open Space, 2021, issued: Apr 1, 2021, to: Tom Schweich.

Maianthemum stellatum (L.) Link.  Starry False Lily of the Valley.

Welch Ditch, Jefferson County, Colorado. Along the Welch Ditch where it is crossed by the Chimney Gulch Trail, in deep weeds beside the bridge over the ditch, 1.63 km. west southwest of the GNIS location of Golden. 39.7499°N, 105.2337°W. WGS 1984 Elev. 1778 m.

Collected by permit: Colorado School of Mines, 2021, issued: Apr 1, 2021, to: Tom Schweich.

Sorbus aucuparia L.  European Mountain Ash.

Welch Ditch, Jefferson County, Colorado. On the easternmost edge of Clear Creek Canyon Park, north bank of the Welch Ditch, 1.72 km. west southwest of the GNIS location of Golden. 39.7518°N, 105.2358°W. WGS 1984 Elev. 1768 m. The few bud scales that could be found in these specimens were quite hairy. Also collected nearby: Holodiscus dumosus, and Prunus americana.

Collected by permit: Jefferson County Open Space, 2021, issued: Apr 1, 2021, to: Tom Schweich.

Sporobolus cryptandrus (Torr.) A. Gray.  Sand Drop-seed.

North Table Mountain, Jefferson County, Colorado. Lower south slopes of North Table Mountain, beside the access road to the overflow (upper) parking lot for the Golden Cliffs climbing area, 1.57 km. northeast of the GNIS location of Golden 39.7659°N, 105.2172°W. WGS 1984 Elev. 1788 m. Mostly grassland with a few shrubs, also collected nearby: Corydalis aurea, Securigera varia, and Erigeron tracyi.

Collected by permit: City of Golden, 2021, issued: Jan 27, 2021, to: Tom Schweich.

Juncus interior Wiegand.  Inland Rush.

North Table Mountain, Jefferson County, Colorado. Southwest slope of North Table Mountain, where a spring-fed stream crosses the City of Golden North Table Mountain Trail, forming a very small wetland, 1.66 km. north of the GNIS location of Golden. 39.767°N, 105.2201°W. WGS 1984 Elev. 1822 m. Previously collected here: Rumex crispus, Poa palustris, Elymus trachycaulus, and Thlaspi arvense.

Collected by permit: City of Golden, 2021, issued: Jan 27, 2021, to: Tom Schweich.

Carex brevior (Dewey) Mack.  Shortbeak Sedge.

North Table Mountain, Jefferson County, Colorado. Southwest slopes of North Table Mountain, along an ephemeral stream, about midway between the North Table Mountain Trail below and the Climbing Access Trail above, 1.78 km. north of the GNIS location of Golden. 39.7678°N, 105.2197°W. WGS 1984 Elev. 1876 m.

Collected by permit: City of Golden, 2021, issued: Jan 27, 2021, to: Tom Schweich.

Carex L.  Sedge.

North Table Mountain, Jefferson County, Colorado. 39.7678°N, 105.2197°W. WGS 1984 Elev. 1876 m.

Collected by permit: City of Golden, 2021, issued: Jan 27, 2021, to: Tom Schweich.

Mentzelia albicaulis Hook.  White-Stem Blazing Star.

North Table Mountain, Jefferson County, Colorado. Heavy brush and boulders on steep southwest slope of North Table Mountain, above the spring, but below the headscarp of an ancient landslide, 1.87 km. north of the GNIS location of Golden. 39.7684°N, 105.2198°W. WGS 1984 Elev. 1906 m. The brush is mostly Prunus americanus, with some Prunus virginiana, Rhus trilobata, and Cercocarpus montanus.

Collected by permit: City of Golden, 2021, issued: Jan 27, 2021, to: Tom Schweich.

Humulus lupulus L.  Wild Hops.

North Table Mountain Park, Jefferson County, Colorado. In a flat area (headscarp of ancient landslide?) on the steep southwest slope of North Table Mountain, 1.91 km. north of the GNIS location of Golden. 39.7687°N, 105.2199°W. WGS 1984 Elev. 1910 m. Growing on boulders and Prunus virginiana in a sea of Toxicodendron rydbergii. This flat area is probably a catchment for the spring located just below. Location is in a small wedge of Jefferson County Open Space land between two parcels of City of Golden land.

Collected by permit: Jefferson County Open Space, 2021, issued: Apr 1, 2021, to: Tom Schweich.

Hybanthus verticillatus (Ortega) Baill.  Baby Slippers.

North Table Mountain Park, Jefferson County, Colorado. Beside the Golden Cliffs Trail near the junction with the trail to the overflow parking lot, 1.80 km. northeast of the GNISS location of Golden 39.7666°N, 105.2138°W. WGS 1984 Elev. 1811 m. Disturbed trailside.

Collected by permit: Jefferson County Open Space, 2021, issued: Apr 1, 2021, to: Tom Schweich.

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

Morrison Creek, Jefferson County, Colorado. First canyon west of Little Scraggy Peak, 1.43 km. south of NF 550 “Redskin Creek Road,” 62.0 km. south of the GNIS location of Golden. 39.3287°N, 105.2841°W. WGS 1984 Elev. 2390 m. Among boulders on small ridge, east side of Morrison Creek. Open forest.

Collected by permit: Pike - San Isabel National Forest, 2021, issued: Mar 29, 2021, to: Tom Schweich.

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

Morrison Creek, Jefferson County, Colorado. First canyon west of Little Scraggy Peak, 1.43 km. south of NF 550 “Redskin Creek Road,” 62.0 km. south of the GNIS location of Golden. 39.3287°N, 105.2843°W. WGS 1984 Elev. 2386 m. Flowers white. Among boulders on top of small ridge. Open forest.

Collected by permit: Pike - San Isabel National Forest, 2021, issued: Mar 29, 2021, to: Tom Schweich.

Pedicularis canadensis L.  Canadian Lousewort.

Morrison Creek, Jefferson County, Colorado. Lower part of a small gulch tributary to Morrison Creek, 1.25 km. south of NF Road 550 61.8 km. south of the GNIS location of Golden. 39.3299°N, 105.2837°W. WGS 1984 Elev. 2381 m. Flowers yellow. Damp forest floor, also collected here: Lonicera involucrata, Dodecatheon pulchellum, Bromus porteri, and Oryzopsis asperifolia. Var. fluviatilis if infraspecific names are to be applied, but not accepted by POWO (Kew, 2021).

Collected by permit: Pike - San Isabel National Forest, 2021, issued: Mar 29, 2021, to: Tom Schweich.

Dodecatheon pulchellum (Raf.) Merr.  Beautiful Shootingstar.

Morrison Creek, Jefferson County, Colorado. Lower part of a small gulch tributary to Morrison Creek, 1.25 km. south of NF Road 550, 61.8 km. south of the GNIS location of Golden. 39.3301°N, 105.2837°W. WGS 1984 Elev. 2380 m. Petals yellow at base, white, then magenta. Damp forest floor, also collected here: Lonicera involucrata, Pedicularis canadensis, Bromus porteri, and Oryzopsis asperifolia.

Collected by permit: Pike - San Isabel National Forest, 2021, issued: Mar 29, 2021, to: Tom Schweich.

Oryzopsis asperifolia Michx.  White-Grain Mountain Rice-Grass.

Morrison Creek, Jefferson County, Colorado. Lower part of a small gulch tributary to Morrison Creek, 1.25 km. south of NF Road 550 61.8 km. south of the GNIS location of Golden. 39.3299°N, 105.2837°W. WGS 1984 Elev. 2378 m. Damp forest floor, also collected here: Lonicera involucrata, Pedicularis canadensis, Dodecatheon pulchellum, and Bromus porteri. Shattering as fast as I can collect it.

Collected by permit: Pike - San Isabel National Forest, 2021, issued: Mar 29, 2021, to: Tom Schweich.

Schizachne purpurescens Hackel.  False Melicgrass.

Morrison Creek, Jefferson County, Colorado. Lower part of a small gulch tributary to Morrison Creek, 1.25 km. south of NF Road 550 61.8 km. south of the GNIS location of Golden. 39.3299°N, 105.2837°W. WGS 1984 Elev. 2378 m.. Fronts of sheaths and proximal glumes are reddish-purple. Damp forest floor, also collected here: Lonicera involucrata, Pedicularis canadensis, Dodecatheon pulchellum, and Oryzopsis asperifolia.

Collected by permit: Pike - San Isabel National Forest, 2021, issued: Mar 29, 2021, to: Tom Schweich.

Stellaria longipes Goldie ssp. longipes.  Longstalk Starwort.

Morrison Creek, Jefferson County, Colorado. Lower part of a small gulch tributary to Morrison Creek, 1.25 km. south of NF Road 550, 61.8 km. south of the GNIS location of Golden. 39.3302°N, 105.2839°W. WGS 1984 Elev. 2387 m. Damp forest floor, also collected here: Lonicera involucrata, Pedicularis canadensis, Dodecatheon pulchellum, Schizachne purpurescens, and Oryzopsis asperifolia.

Collected by permit: Pike - San Isabel National Forest, 2021, issued: Mar 29, 2021, to: Tom Schweich.

Lonicera involucrata (Richardson) Banks ex Spreng.  Twinberry Honeysuckle.

Morrison Creek, Jefferson County, Colorado. Lower part of a small gulch tributary to Morrison Creek, 1.22 km. south of NF Road 550, 61.8 km. south of the GNIS location of Golden. 39.3301°N, 105.2838°W. WGS 1984 Elev. 2366 m. Damp forest floor, also collected here: Stellaria longipes, Pedicularis canadensis, Dodecatheon pulchellum, Schizachne purpurescens, and Oryzopsis asperifolia. Solitary plants.

Collected by permit: Pike - San Isabel National Forest, 2021, issued: Mar 29, 2021, to: Tom Schweich.

Aquilegia coerulea E. James.  Colorado Blue Columbine.

Morrison Creek, Jefferson County, Colorado. Lower part of a small gulch tributary to Morrison Creek, 1.18 km. south of NF Road 550, 61.8 km. south of the GNIS location of Golden. 39.3303°N, 105.2842°W. WGS 1984 Elev. 2383 m. On a bench above the damp forest floor, also collected nearby: Lonicera involucrata, Stellaria longipes, Pedicularis canadensis, Dodecatheon pulchellum, Schizachne purpurescens, and Oryzopsis asperifolia.

Collected by permit: Pike - San Isabel National Forest, 2021, issued: Mar 29, 2021, to: Tom Schweich.

Lupinus argenteus Pursh var. fulvomaculatus (Payson) Barneby.  Lodgepole Lupine.

Morrison Creek, Jefferson County, Colorado. Moist forest floor across an old road from Morrison Creek, just north of the Colorado Trail, 0.92 km. south of NF Road 550, 61.5 km. south of the GNIS location of Golden. 39.332°N, 105.2853°W. WGS 1984 Elev. 2368 m. Small white flowers, with an eyespot that has faded to brown, keel tip dark blue.

Collected by permit: Pike - San Isabel National Forest, 2021, issued: Mar 29, 2021, to: Tom Schweich.

Thalictrum fendleri Engelm. ex A. Gray.  Fendler's Meadow Rue.

Morrison Creek, Jefferson County, Colorado. Moist forest floor across an old road from Morrison Creek, just north of the Colorado Trail, 0.92 km. south of NF Road 550, 61.5 km. south of the GNIS location of Golden. 39.3321°N, 105.2853°W. WGS 1984 Elev. 2375 m. Also collected nearby: Lupinus argenteus var. fulvomaculatus, and Rudbeckia laciniata.

Collected by permit: Pike - San Isabel National Forest, 2021, issued: Mar 29, 2021, to: Tom Schweich.

Antennaria rosea Greene.  Rosy Pussytoes.

Morrison Creek, Jefferson County, Colorado. Moist forest floor in the middle of an old road next to Morrison Creek, just north of the Colorado Trail, 0.78 km. south of NF Road 550, 61.5 km. south of the GNIS location of Golden. 39.3331°N, 105.285°W. WGS 1984 Elev. 2337 m. Very tall, very red, but small involucres.

Collected by permit: Pike - San Isabel National Forest, 2021, issued: Mar 29, 2021, to: Tom Schweich.

Arnica cordifolia Hook.  Heart-Leaf Leopardbane.

Morrison Creek, Jefferson County, Colorado. Moist shaded forest floor between an old road and Morrison Creek, north of the Colorado Trail, 0.77 km. south of NF Road 550, 61.5 km. south of the GNIS location of Golden. 39.3331°N, 105.2848°W. WGS 1984 Elev. 2358 m. Also collected here: Antennaria rosea in the middle of the road.

Collected by permit: Pike - San Isabel National Forest, 2021, issued: Mar 29, 2021, to: Tom Schweich.

Lolium pratense (Huds.) Darbysh.  Meadow Rye Grass.

[Syn: Festuca pratensis Huds., Schedonorus pratensis (Huds.) P. Beauv.]

Lippincott Ranch, Jefferson County, Colorado. Central "wasp waist" of ranch, just below the ranch road, 22.0 km. north northwest of the GNIS location of Golden. 39.9016°N, 105.2738°W. WGS 1984 Elev. 1987 M. Weakly rhizomatous. Grassland with a few ponderosa pines. Lippincott Ranch is jointly owned by City of Boulder Open Space and Mountain Parks and Jefferson County Open Space.

Collected by permit: Jefferson County Open Space, 2021, issued: Apr 1, 2021, to: Tom Schweich.

Eleocharis compressa Sull.  Flatstem Spikerush.

Lippincott Ranch, Jefferson County, Colorado. Central "wasp waist" of ranch, just below the ranch road, 22.0 km. north northwest of the GNIS location of Golden. 39.9014°N, 105.274°W. WGS 1984 Elev. 1989 m. Culms flattened, scales bifid, achenes 3-sided, apical cap distinct. Wet grassland with a few ponderosa pines. Lippincott Ranch is jointly owned by City of Boulder Open Space and Mountain Parks and Jefferson County Open Space.

Collected by permit: Jefferson County Open Space, 2021, issued: Apr 1, 2021, to: Tom Schweich.

Juncus interior Wiegand.  Inland Rush.

Lippincott Ranch, Jefferson County, Colorado. Central "wasp waist" of ranch, just below the ranch road, 22.0 km. north northwest of the GNIS location of Golden. 39.9014°N, 105.274°W. WGS 1984 Elev. 1989 m. Wet grassland with a few ponderosa pines. Lippincott Ranch is jointly owned by City of Boulder Open Space and Mountain Parks and Jefferson County Open Space.

Collected by permit: Jefferson County Open Space, 2021, issued: Apr 1, 2021, to: Tom Schweich.

Eremogone fendleri (A. Gray) Ikonnikov.  Fendler's Sandwort.

Lippincott Ranch, Jefferson County, Colorado. Southeastern "panhandle" part of the ranch, near its west end, 21.8 km. north northwest of the GNIS location of Golden. 39.9008°N, 105.2735°W. WGS 1984 Elev. 1987 m. Wet gravelly grassland with a few ponderosa pines. Lippincott Ranch is jointly owned by City of Boulder Open Space and Mountain Parks and Jefferson County Open Space.

Collected by permit: Jefferson County Open Space, 2021, issued: Apr 1, 2021, to: Tom Schweich.

Apocynum ×floribundum Greene.  Dogbane.

Lippincott Ranch, Jefferson County, Colorado. Southeastern "panhandle" portion of ranch, on the north boundary of Ranson/Edwards Homestead Open Space, nearly under the power line, 21.8 km. north northeast of the GNIS location of Golden. 39.9005°N, 105.2732°W. WGS 1984 Elev. 1990 m. Leaves spreading to ascending, petiolate, bracts foliaceous, corolla 2× calyx, pink. Seasonally wet slope with a few ponderosa pines. Lippincott Ranch is jointly owned by City of Boulder Open Space and Mountain Parks and Jefferson County Open Space.

Collected by permit: Jefferson County Open Space, 2021, issued: Apr 1, 2021, to: Tom Schweich.

Juncus longistylis Torr.  Long-Style Rush.

Lippincott Ranch, Jefferson County, Colorado. Southeastern "panhandle" portion of ranch, near the north boundary of Ranson/Edwards Homestead Open Space, nearly under the power line, 21.8 km. north northeast of the GNIS location of Golden. 39.9004°N, 105.2732°W. WGS 1984 Elev. 1990 m. Terminal head, scarious margins. Seasonally wet slope with a few ponderosa pines. Lippincott Ranch is jointly owned by City of Boulder Open Space and Mountain Parks and Jefferson County Open Space.

Collected by permit: Jefferson County Open Space, 2021, issued: Apr 1, 2021, to: Tom Schweich.

Potentilla hippiana Lehm. var. effusa (Douglas ex Lehm.) Dorn.  Wooly Cinquefoil.

Lippincott Ranch, Jefferson County, Colorado. Southwest corner of the "panhandle" southern part of the ranch, near the powerline, 21.7 km. north northwest of the GNIS location of Golden. 39.9001°N, 105.2731°W. WGS 1984 Elev. 1989 m. Open seasonally wet grassland, also nearby: Amorpha nana, and Gentiana affinis. Lippincott Ranch is jointly owned by City of Boulder Open Space and Mountain Parks and Jefferson County Open Space.

Collected by permit: Jefferson County Open Space, 2021, issued: Apr 1, 2021, to: Tom Schweich.

Erigeron flagellaris A. Gray.  Trailing Fleabane.

Lippincott Ranch, Jefferson County, Colorado. Southwest corner of the "panhandle" southern part of the ranch, near the powerline, 21.7 km. north northwest of the GNIS location of Golden. 39.9001°N, 105.2731°W. WGS 1984 Elev. 1989 m. Stem hairs ascending to appressed. Open seasonally wet grassland, also nearby: Potentilla hippiana var. effusa, Amorpha nana, and Gentiana affinis. Lippincott Ranch is jointly owned by City of Boulder Open Space and Mountain Parks and Jefferson County Open Space.

Collected by permit: Jefferson County Open Space, 2021, issued: Apr 1, 2021, to: Tom Schweich.

Juncus L.  Rush.

Lippincott Ranch, Jefferson County, Colorado. 39.9001°N, 105.273°W. WGS 1984 Elev. 1985 m.

Collected by permit: Jefferson County Open Space, 2021, issued: Apr 1, 2021, to: Tom Schweich.

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

Lippincott Ranch, Jefferson County, Colorado. Southwest corner of the "panhandle" southern part of the ranch, on the south side of the upper of two artificial ponds, 21.7 km. north northwest of the GNIS location of Golden. 39.9001°N, 105.2714°W. WGS 1984 Elev. 1962 m. Edge of small pond. Also collected here: Prunella vulgaris, Dianthus armeria, Juncus sp., Veronica anagallis-aquatica, Potentilla recta, and Bromus japonicus. Lippincott Ranch is jointly owned by City of Boulder Open Space and Mountain Parks and Jefferson County Open Space.

Collected by permit: Jefferson County Open Space, 2021, issued: Apr 1, 2021, to: Tom Schweich.

Juncus articulatus L.  Joint-Leaf Rush.

Lippincott Ranch, Jefferson County, Colorado. 39.9002°N, 105.2715°W. WGS 1984 Elev. 1958 m. Caespitose.

Collected by permit: Jefferson County Open Space, 2021, issued: Apr 1, 2021, to: Tom Schweich.

Buchloe dactyloides (Nutt.) Engelm.  Buffalo Grass.

Lippincott Ranch, Jefferson County, Colorado. Southwest quadrant of the "panhandle" southern part of the ranch, bear the lower of two artificial ponds, 21.7 km. north northwest of the GNIS location of Golden. 39.9001°N, 105.2707°W. WGS 1984 Elev. 1963 m. Mostly pistillate plants, the few staminate plants long past their prime. Wet gravel bench above ephemeral stream. Lippincott Ranch is jointly owned by City of Boulder Open Space and Mountain Parks and Jefferson County Open Space.

Collected by permit: Jefferson County Open Space, 2021, issued: Apr 1, 2021, to: Tom Schweich.

Glyceria striata (Lam.) Hitchc.  Striate Manna Grass.

Lippincott Ranch, Jefferson County, Colorado. Southwest quadrant of the "panhandle" southern part of the ranch, in the bed of the lower of two artificial ponds, 21.7 km. north northwest of the GNIS location of Golden. 39.9001°N, 105.2706°W. WGS 1984 Elev. 1961 m. Lippincott Ranch is jointly owned by City of Boulder Open Space and Mountain Parks and Jefferson County Open Space.

Collected by permit: Jefferson County Open Space, 2021, issued: Apr 1, 2021, to: Tom Schweich.

Opuntia fragilis (Nuttall) Haw.  Brittle Pricklypear.

Lippincott Ranch, Jefferson County, Colorado. Southwest quadrant of the "panhandle" southern part of the ranch, on a bench between two ephemeral streams, 21.7 km. north northwest of the GNIS location of Golden. 39.9007°N, 105.2704°W. WGS 1984 Elev. 1958 m. Rooted in soil beside, and then growing on top of, a large boulder. Mostly open prairie, with just a few ponderosa pines. This cactus was also observed among rocks and ponderosa pines along the crest of the ridge to the north. Lippincott Ranch is jointly owned by City of Boulder Open Space and Mountain Parks and Jefferson County Open Space.

Collected by permit: Jefferson County Open Space, 2021, issued: Apr 1, 2021, to: Tom Schweich.

Dalea candida Willd. var. oligophylla (Torr.) Shinners.  White Prairie Clover.

Lippincott Ranch, Jefferson County, Colorado. Southern "panhandle" part of the ranch, about in the middle, on a southeast-facing slope up to the ridge from the ephemeral stream, 21.8 km. north northwest of the GNIS location of Golden. 39.9013°N, 105.2694°W. WGS 1984 Elev. 1950 m. Large woody caudex, growing in short grasses. Lippincott Ranch is jointly owned by City of Boulder Open Space and Mountain Parks and Jefferson County Open Space.

Collected by permit: Jefferson County Open Space, 2021, issued: Apr 1, 2021, to: Tom Schweich.

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

Lippincott Ranch, Jefferson County, Colorado. Southern "panhandle" part of the ranch, on a ridge in the north-central part, 22.0 km. north northwest of the GNIS location of Golden. 39.9026°N, 105.2688°W. WGS 1984 Elev. 1974 m. Slender prickles on new growth, leaflets 5-7, teeth gland-tipped. Growing in and around Rhus trilobata, few ponderosa pines on rocky ridge. Lippincott Ranch is jointly owned by City of Boulder Open Space and Mountain Parks and Jefferson County Open Space.

Collected by permit: Jefferson County Open Space, 2021, issued: Apr 1, 2021, to: Tom Schweich.

Anthriscus caucalis M. Bieb. var. caucalis.  Bur Chervil.

Lippincott Ranch, Jefferson County, Colorado. Southern "panhandle" part of the ranch, on a ridge in the north-central to northwest part, 22.0 km. north northwest of the GNIS location of Golden. 39.9023°N, 105.2711°W. WGS 1984 Elev. 1984 m. Fruit bristles hooked. In scattered ponderosa pines, with Phacelia heterophylla, Descurainia sophia, Opuntia fragilis, and Malva neglecta. Lippincott Ranch is jointly owned by City of Boulder Open Space and Mountain Parks and Jefferson County Open Space.

Collected by permit: Jefferson County Open Space, 2021, issued: Apr 1, 2021, to: Tom Schweich.

Apera interrupta (L.) Beauv.  Italian Windgrass.

Apex Park - Northern Parcel, Jefferson County, Colorado. Northeast corner of the north parcel, near the boundary with the Stonebridge HOA open space, 4.39 km. south of the GNIS location of Golden. 39.7253°N, 105.2191°W. WGS 1984 Elev. 1820 m. Annual, 1 floret per spikelet, lemma awn subterminal. Adjacent to ephemeral stream from unnamed gulch to the west.

Collected by permit: Jefferson County Open Space, 2021, issued: Apr 1, 2021, to: Tom Schweich.

Helianthus pumilus Nutt.  Little Sunflower.

Apex Park - Northern Parcel, Jefferson County, Colorado. Lower slopes of the Front Range foothills, northeast quadrant of Apex Park, 4.45 km. south of the GNIS location of Golden. 39.7248°N, 105.2201°W. WGS 1984 Elev. 1880 m. Grasslands below foothills scrub, collected nearby: Carduus nutans, Heterotheca villosa, Sphaeralcea coccinea, Linaria dalmatica, and Thinopyrum intermedium.

Collected by permit: Jefferson County Open Space, 2021, issued: Apr 1, 2021, to: Tom Schweich.

Heterotheca villosa (Pursh) Shinners.  Hairy False Goldenaster.

Apex Park - Northern Parcel, Jefferson County, Colorado. Lower slopes of the Front Range foothills, northeast quadrant of Apex Park, 4.45 km. south of the GNIS location of Golden. 39.7249°N, 105.2202°W. WGS 1984 Elev. 1886 m. Grasslands below foothills scrub, collected nearby: Carduus nutans, Helianthus pumilus, Sphaeralcea coccinea, Linaria dalmatica, and Thinopyrum intermedium.

Collected by permit: Jefferson County Open Space, 2021, issued: Apr 1, 2021, to: Tom Schweich.

Linaria dalmatica (L.) Mill.  Dalmatian ToadFlax.

Apex Park - Northern Parcel, Jefferson County, Colorado. Lower slopes of the Front Range foothills, northeast quadrant of Apex Park, 4.45 km. south of the GNIS location of Golden. 39.7248°N, 105.2202°W. WGS 1984 Elev. 1887 m. Grasslands below foothills scrub, collected nearby: Carduus nutans, Helianthus pumilus, Heterotheca villosa, Sphaeralcea coccinea, and Thinopyrum intermedium.

Collected by permit: Jefferson County Open Space, 2021, issued: Apr 1, 2021, to: Tom Schweich.

Carduus nutans L.  Nodding Plumeless Thistle.

Apex Park - Northern Parcel, Jefferson County, Colorado. Lower slopes of the Front Range foothills, northeast quadrant of Apex Park, 4.45 km. south of the GNIS location of Golden. 39.7248°N, 105.2201°W. WGS 1984 Elev. 1883 m. Grasslands below foothills scrub, collected nearby: Helianthus pumilus, Heterotheca villosa, Sphaeralcea coccinea, Linaria dalmatica, and Thinopyrum intermedium. Colorado Noxious Weed List B.

Collected by permit: Jefferson County Open Space, 2021, issued: Apr 1, 2021, to: Tom Schweich.

Thinopyrum intermedium (Host) Barkworth & D.R. Dewey.  Intermediate Wheatgrass.

Apex Park - Northern Parcel, Jefferson County, Colorado. Lower slopes of the Front Range foothills, northeast quadrant of Apex Park, 4.45 km. south of the GNIS location of Golden. 39.7248°N, 105.2204°W. WGS 1984 Elev. 1896 m. Rhizomatous, one sheath margin ciliate, glumes mucronate, glaucus. Small patch ±25m², grasslands below foothills scrub, collected nearby: Carduus nutans, Helianthus pumilus, Heterotheca villosa, Sphaeralcea coccinea, and Linaria dalmatica.

Collected by permit: Jefferson County Open Space, 2021, issued: Apr 1, 2021, to: Tom Schweich.

Achillea millefolium L.  Common Yarrow.

Apex Park - Northern Parcel, Jefferson County, Colorado. South side of an unnamed gulch, near the center of the north parcel, 4.50 km. south of the GNIS location of Golden. 39.7245°N, 105.2224°W. WGS 1984 Elev. 1951 m. Moderate northwest slope along an elk trail on the south side of the gulch; also collected here: Monarda fistulosa.

Collected by permit: Jefferson County Open Space, 2021, issued: Apr 1, 2021, to: Tom Schweich.

Monarda fistulosa L.  Wild Bergamot.

Apex Park - Northern Parcel, Jefferson County, Colorado. South side of an unnamed gulch, near the center of the north parcel, 4.50 km. south of the GNIS location of Golden. 39.7245°N, 105.2224°W. WGS 1954 Elev. 1952 m. Moderate northwest slope along an elk trail on the south side of the gulch; also collected here: Achillea millefolium.

Collected by permit: Jefferson County Open Space, 2021, issued: Apr 1, 2021, to: Tom Schweich.

Woodsia oregana D.C. Eaton ssp. cathcartiana (B.L. Rob.) Windham.  Rocky Mountain Woodsia.

Apex Park - Northern Parcel, Jefferson County, Colorado. In an unnamed gulch with an ephemeral stream, roughly equal in size and catchment area with Deadman Gulch the next gulch to the north, about ⅓ of the way up the initial Front Range scarp, 4.51 km. south of the GNIS location of Golden. 39.7244°N, 105.2226°W. WGS 1984 Elev. 1957 m. Steep, damp north-facing slope, in rocks under Ribes cereum, Prunus virginiana, and Amelanchier alnifolia.

Collected by permit: Jefferson County Open Space, 2021, issued: Apr 1, 2021, to: Tom Schweich.

Rhus glabra L.  Smooth Sumac.

Apex Park - Northern Parcel, Jefferson County, Colorado. Beside a stream in an unnamed gulch, near the center of the north parcel, 4.52 km. south southwest of the GNIS location of Golden. 39.7243°N, 105.2231°W. WGS 1984 Elev. 1947 m. Pistillate.

Collected by permit: Jefferson County Open Space, 2021, issued: Apr 1, 2021, to: Tom Schweich.

Veronica anagallis-aquatica L.  Water Speedwell.

Apex Park - Northern Parcel, Jefferson County, Colorado. On the bedrock of an unnamed gulch, near the center of the north parcel, 4.52 km. south southwest of the GNIS location of Golden. 39.7244°N, 105.2231°W. WGS 1984 Elev. 1959 m. Growing in tufts of moss amid flowing water; small plants, inflorescence axillary, capsule barely notched.

Collected by permit: Jefferson County Open Space, 2021, issued: Apr 1, 2021, to: Tom Schweich.

Poa fendleriana (Steud.) Vasey.  Muttongrass.

Apex Park - Northern Parcel, Jefferson County, Colorado. On the bedrock of an unnamed gulch, near the center of the north parcel, 4.52 km. south southwest of the GNIS location of Golden. 39.7244°N, 105.2231°W. WGS 1984 Elev. 1959 m. Non-rhizomatous, spikelets compressed, mostly pistillate, lemmas pubescent on proximal mid-vein and margin. In rock joints along stream.

Collected by permit: Jefferson County Open Space, 2021, issued: Apr 1, 2021, to: Tom Schweich.

Collomia linearis Nutt.  Tiny Trumpet.

Apex Park - Northern Parcel, Jefferson County, Colorado. On the bedrock of an unnamed gulch, near the center of the north parcel, 4.52 km. south southwest of the GNIS location of Golden. 39.7243°N, 105.2231°W. WGS 1984 Elev. 1956 m. Flowers pink.

Collected by permit: Jefferson County Open Space, 2021, issued: Apr 1, 2021, to: Tom Schweich.

Erythranthe floribunda (Douglas ex Lindl.) G. L. Nesom.  Many Flowered Monkey Flower.

Apex Park - Northern Parcel, Jefferson County, Colorado. On the bedrock of an unnamed gulch, near the center of the north parcel, 4.55 km. south southwest of the GNIS location of Golden. 39.7241°N, 105.2237°W. WGS 1984 Elev. 1972 m. Calyx glandular, inflated in fruit, flowers yellow. Hundreds, growing on islands of moss in flowing water, also collected here, another Erythranthe sp., Epilobium ciliatum, and Juncus bufonius.

Collected by permit: Jefferson County Open Space, 2021, issued: Apr 1, 2021, to: Tom Schweich.

Epilobium L.  Willowherb.

Apex Park - Northern Parcel, Jefferson County, Colorado. On the bedrock of an unnamed gulch, near the center of the north parcel, 4.55 km. south southwest of the GNIS location of Golden. 39.7241°N, 105.2237°W. WGS 1984 Elev. 1972 m. Growing on islands of moss amid flowing water, also collected here, Erythranthe floribunda, and Juncus bufonius.

Collected by permit: Jefferson County Open Space, 2021, issued: Apr 1, 2021, to: Tom Schweich.

Erythranthe floribunda (Douglas ex Lindl.) G. L. Nesom.  Many Flowered Monkey Flower.

Apex Park - Northern Parcel, Jefferson County, Colorado. On the bedrock of an unnamed gulch, near the center of the north parcel, 4.55 km. south southwest of the GNIS location of Golden. 39.7241°N, 105.2237°W. WGS 1984 Elev. 1972 m. Corolla yellow with spots, stipitate-glandular, calyx lobes ciliate. Growing on islands of moss amid flowing water, also collected here, Erythranthe floribunda, Epilobium ciliatum, and Juncus bufonius. I think these are just very small E. floribunda.

Collected by permit: Jefferson County Open Space, 2021, issued: Apr 1, 2021, to: Tom Schweich.

Juncus bufonius L.  Toad Rush.

Apex Park - Northern Parcel, Jefferson County, Colorado. On the bedrock of an unnamed gulch, near the center of the north parcel, 4.55 km. south southwest of the GNIS location of Golden. 39.7241°N, 105.2237°W. WGS 1984 Elev. 1972 m. Growing on islands of moss amid flowing water, also collected here, Erythranthe floribunda, and an Epilobium sp.

Collected by permit: Jefferson County Open Space, 2021, issued: Apr 1, 2021, to: Tom Schweich.

Trifolium L.  Clover.

Apex Park - Northern Parcel, Jefferson County, Colorado. 39.7241°N, 105.2237°W. WGS 1984 Elev. 1972 m.

Collected by permit: Jefferson County Open Space, 2021, issued: Apr 1, 2021, to: Tom Schweich.

Chaenactis douglasii (Hook.) Hook. & Arn. var. douglasii.  Douglas' Dustymaiden.

Salt Creek, Park County, Colorado. South-facing hillside along Salt Creek and Pike-San Isabel National Forest Road 435 "Salt Creek Road," 3.2 mi. by road west of US Highway 285, 145 km. southwest of the GNIS location of Golden. 38.9583°N, 106.0126°W. WGS 1984 Elev. 2871 m. Open hillside with pines, also collected here: Cryptantha sp., Penstemon barbatus, Gutierrezia sarothrae, and Muhlenbergia montana.

Collected by permit: Pike - San Isabel National Forest, 2021, issued: Mar 29, 2021, to: Tom Schweich.

Oreocarya thyrsiflora Greene.  Limestone Cat's-Eye.

Salt Creek, Park County, Colorado. South-facing hillside along Salt Creek and Pike-San Isabel National Forest Road 435 "Salt Creek Road," 3.2 mi. by road west of US Highway 285, 145 km. southwest of the GNIS location of Golden. 38.9583°N, 106.0126°W. WGS 1984 Elev. 2871 m. Open hillside with pines, also collected here: Penstemon barbatus, Chaenactis douglasii, Gutierrezia sarothrae, and Muhlenbergia montana.

Collected by permit: Pike - San Isabel National Forest, 2021, issued: Mar 29, 2021, to: Tom Schweich.

Hymenoxys richardsonii (Hook.) Cockerell var. floribunda (A. Gray) Parker.  Colorado Rubberweed.

Salt Creek, Park County, Colorado. South-facing hillside along Salt Creek and Pike-San Isabel National Forest Road 435 "Salt Creek Road," 3.2 mi. by road west of US Highway 285, 145 km. southwest of the GNIS location of Golden. 38.9583°N, 106.0126°W. WGS 1984 Elev. 2871 m. Open hillside with pines, also collected here: Oreocarya thyrsiflora, Penstemon barbatus, Chaenactis douglasii, Gutierrezia sarothrae, and Muhlenbergia montana.

Collected by permit: Pike - San Isabel National Forest, 2021, issued: Mar 29, 2021, to: Tom Schweich.

Ipomopsis aggregata (Pursh) V.E. Grant ssp. candida (Rydb.) V.E. Grant & A.D. Grant.  Scarlet Gilia.

Salt Creek, Park County, Colorado. South-facing hillside along Salt Creek and Pike-San Isabel National Forest Road 435 "Salt Creek Road," 3.2 mi. by road west of US Highway 285, 145 km. southwest of the GNIS location of Golden. 38.9583°N, 106.0126°W. WGS 1984 Elev. 2872 m. Flowers light coral to pink. Open hillside with pines, also collected here: Oreocarya thyrsiflora, Penstemon barbatus, Chaenactis douglasii, Gutierrezia sarothrae, Hymenoxys richardsonii var. floribunda, and Muhlenbergia montana.

Collected by permit: Pike - San Isabel National Forest, 2021, issued: Mar 29, 2021, to: Tom Schweich.

Oenothera coronopifolia Torr. & A. Gray.  Crownleaf Evening Primrose.

Salt Creek, Park County, Colorado. South-facing hillside along Salt Creek and Pike-San Isabel National Forest Road 435 "Salt Creek Road," 3.2 mi. by road west of US Highway 285, 145 km. southwest of the GNIS location of Golden. 38.9583°N, 106.0126°W. WGS 1984 Elev. 2875 m. Open hillside with pines, also collected here: Ipomopsis aggregata var. candida, Oreocarya thyrsiflora, Penstemon barbatus, Gutierrezia sarothrae, Hymenoxys richardsonii var. floribunda, and Muhlenbergia montana.

Collected by permit: Pike - San Isabel National Forest, 2021, issued: Mar 29, 2021, to: Tom Schweich.

Penstemon barbatus (Cav.) Roth var. torreyi (Benth.) A. Gray.  Beard-Lip Beardtongue.

Salt Creek, Park County, Colorado. South-facing hillside along Salt Creek and Pike-San Isabel National Forest Road 435 "Salt Creek Road," 3.2 mi. by road west of US Highway 285, 145 km. southwest of the GNIS location of Golden. 38.9586°N, 106.0129°W. WGS 1984 Elev. 2878 m. Open hillside with pines, also collected here: Oenothera coronopifolia, Ipomopsis aggregata var. candida, Gutierrezia sarothrae, Hymenoxys richardsonii var. floribunda, and Muhlenbergia montana.

Collected by permit: Pike - San Isabel National Forest, 2021, issued: Mar 29, 2021, to: Tom Schweich.

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

Salt Creek, Park County, Colorado. South-facing hillside along Salt Creek and Pike-San Isabel National Forest Road 435 "Salt Creek Road," 3.2 mi. by road west of US Highway 285, 145 km. southwest of the GNIS location of Golden. 38.9585°N, 106.0131°W. WGS 1984 Elev. 2889 m. Open hillside with pines, also collected here: Oenothera coronopifolia, Ipomopsis aggregata var. candida, Penstemon barbatus var. torreyi, Gutierrezia sarothrae, and Muhlenbergia montana.

Collected by permit: Pike - San Isabel National Forest, 2021, issued: Mar 29, 2021, to: Tom Schweich.

Erigeron flagellaris A. Gray.  Trailing Fleabane.

Salt Creek, Park County, Colorado. South-facing hillside along Salt Creek and Pike-San Isabel National Forest Road 435 "Salt Creek Road," 3.2 mi. by road west of US Highway 285, 145 km. southwest of the GNIS location of Golden. 38.9585°N, 106.0131°W. WGS 1984 Elev. 2889 m. Flowers blue. Open hillside with pines, also collected here: Oenothera coronopifolia, Lithospermum multiflorum, Penstemon barbatus var. torreyi, Gutierrezia sarothrae, and Muhlenbergia montana.

Collected by permit: Pike - San Isabel National Forest, 2021, issued: Mar 29, 2021, to: Tom Schweich.

Astragalus sp., cf. A. miser Douglas ex Hook. var. oblongifolius (Rydb.) Cronquist.  Timber Milkvetch.

Salt Creek, Park County, Colorado. South-facing hillside along Salt Creek and Pike-San Isabel National Forest Road 435 "Salt Creek Road," 3.2 mi. by road west of US Highway 285, 145 km. southwest of the GNIS location of Golden. 38.9585°N, 106.013°W. WGS 1984 Elev. 2886 m. Open hillside with pines, also collected here: Oenothera coronopifolia, Lithospermum multiflorum, Penstemon barbatus var. torreyi, Gutierrezia sarothrae, and Muhlenbergia montana.

Collected by permit: Pike - San Isabel National Forest, 2021, issued: Mar 29, 2021, to: Tom Schweich.

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

Salt Creek, Park County, Colorado. South-facing hillside along Salt Creek and Pike-San Isabel National Forest Road 435 "Salt Creek Road," 3.2 mi. by road west of US Highway 285, 145 km. southwest of the GNIS location of Golden. 38.9587°N, 106.0128°W. WGS 1984 Elev. 2885 m. Open hillside with pines, also collected here: Oenothera coronopifolia, Lithospermum multiflorum, Penstemon barbatus var. torreyi, Gutierrezia sarothrae, and Muhlenbergia montana.

Collected by permit: Pike - San Isabel National Forest, 2021, issued: Mar 29, 2021, to: Tom Schweich.

Oenothera coronopifolia Torr. & A. Gray.  Crownleaf Evening Primrose.

Salt Creek, Park County, Colorado. Small valley between two ridges, just north of Salt Creek and Pike-San Isabel National Forest Road 435 "Salt Creek Road," 3.1 mi. by road west of US Highway 285, 145 km. southwest of the GNIS location of Golden. 38.959°N, 106.0122°W. WGS 1984 Elev. 2858 m. Scattered ponderosa pines and aspens, also collected here: Oxytropis sericea, Artemisia frigida, and Hesperostipa comata.

Collected by permit: Pike - San Isabel National Forest, 2021, issued: Mar 29, 2021, to: Tom Schweich.

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

Salt Creek, Park County, Colorado. Small valley between two ridges, just north of Salt Creek and Pike-San Isabel National Forest Road 435 "Salt Creek Road," 3.1 mi. by road west of US Highway 285, 145 km. southwest of the GNIS location of Golden. 38.959°N, 106.012°W. WGS 1984 Elev. 2859 m. Valley bottom, around a small grove of aspens, also collected here: Oxytropis sericea, Oenothera coronopifolia, and Artemisia frigida.

Collected by permit: Pike - San Isabel National Forest, 2021, issued: Mar 29, 2021, to: Tom Schweich.

Astragalus.  Milkvetch.

Salt Creek, Park County, Colorado. Small valley between two ridges, just north of Salt Creek and Pike-San Isabel National Forest Road 435 "Salt Creek Road," 3.1 mi. by road west of US Highway 285, 145 km. southwest of the GNIS location of Golden. 38.959°N, 106.0121°W. WGS 1984 Elev. 2850 m. Valley bottom, around a small grove of aspens, also collected here: Oxytropis sericea, Oenothera coronopifolia, and Artemisia frigida.

Collected by permit: Pike - San Isabel National Forest, 2021, issued: Mar 29, 2021, to: Tom Schweich.

Penstemon virgatus A. Gray var. asa-grayi (Crosswh.) Dorn.  Upright Blue Beardtongue.

Salt Creek, Park County, Colorado. Small valley between two ridges, just north of Salt Creek and Pike-San Isabel National Forest Road 435 "Salt Creek Road," 3.1 mi. by road west of US Highway 285, 145 km. southwest of the GNIS location of Golden. 38.959°N, 106.012°W. WGS 1984 Elev. 2853 m. Valley bottom, around a small grove of aspens, also collected here: Oxytropis sericea, Oenothera coronopifolia, and Artemisia frigida.

Collected by permit: Pike - San Isabel National Forest, 2021, issued: Mar 29, 2021, to: Tom Schweich.

Oxytropis sericea Torr. & A. Gray.  White Locoweed.

Salt Creek, Park County, Colorado. Small valley between two ridges, just north of Salt Creek and Pike-San Isabel National Forest Road 435 "Salt Creek Road," 3.1 mi. by road west of US Highway 285, 145 km. southwest of the GNIS location of Golden. 38.9591°N, 106.0121°W. WGS 1984 Elev. 2858 m. Flowers white. Valley bottom, around a small grove of aspens, also collected here: Oenothera coronopifolia, Penstemon virgatus var. asa-grayi and Artemisia frigida. Variety sericea if infraspecific names are to be applied.

Collected by permit: Pike - San Isabel National Forest, 2021, issued: Mar 29, 2021, to: Tom Schweich.

Oxytropis sericea Torr. & A. Gray.  White Locoweed.

Salt Creek, Park County, Colorado. Small valley between two ridges, just north of Salt Creek and Pike-San Isabel National Forest Road 435 "Salt Creek Road," 3.1 mi. by road west of US Highway 285, 145 km. southwest of the GNIS location of Golden. 38.9591°N, 106.0121°W. WGS 1984 Elev. 2858 m. Flowers white. Valley bottom, around a small grove of aspens, also collected here: Oenothera coronopifolia, Penstemon virgatus var. asa-grayi and Artemisia frigida. Variety sericea if infraspecific names are to be applied.

Collected by permit: Pike - San Isabel National Forest, 2021, issued: Mar 29, 2021, to: Tom Schweich.