Eastern Mojave Vegetation Field Notes (Continued)  
 

Tom Schweich  

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 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.

 

   

May, 2017

 

 

   

Tuesday, May 2nd

Upper Washington Avenue Open Space.

Locations: Upper Washington Avenue Open Space.
Full Size ImageColl. No. 1591, Lonicera tatarica
Full Size ImageColl. No. 1591, Lonicera tatarica  

1591  Field Identification: unknown, woody perennial, garden escapee, maybe Caprifoliaceae, same as Coll. No. 1705.

Lonicera tatarica L. Tatarian Honeysuckle.

Upper Washington Avenue Open Space, Jefferson County, Colorado. Small (4 acre) fallow city-owned parcel in northern Golden, near the intersection of Colorado Hughway 93 and Washington Avenue. Several plants near the east end of the parcel, close to North Ford Street. 39.7688N, 105.2313W. Elev. 1795 m. Attractive upright shrub, pink flowers. Probable garden escapee.

Coll. No. 1591, 2 May 2017, characters observed: Shrub to small tree, 2 m.; Leaves, opposite, 24 mm. × 17 mm. wide, simple, entire, petiole, 1.5 mm.; Peduncle, 10-13 mm.; Flowers, in pairs, subtended by bracts, bisexual; Bracts, small, at base of calyx; Calyx, tube 2.0 mm. + lobes 0.5-1.0 mm.; Corolla, tube 12.5 mm. + lobes 12 mm., pink, hairy inside; Ovary, inferior; Stamens, #5, exserted, versatile; Style, #1, exserted, hairy; Stigma, capitate. Disturbed places, native to Siberia, sporadic escapee from cultivation, berries possibly toxic.

Locations: Upper Washington Avenue Open Space.
Full Size ImageObs. No. 1540, Opuntia macrorhiza  

Field identification: Opuntia, probably O. macrorhiza.

Locations: Upper Washington Avenue Open Space.
Full Size ImageObs. No. 1540, Opuntia macrorhiza  

Field identification: Lithospermum incisum.
  1592  Field identification: Leucocrinum montanum.

Leucocrinum montanum Nutt. ex A. Gray. Star Lily. Upper Washington Avenue Open Space, Jefferson County, Colorado. Small (4 acre) fallow city-owned parcel in northern Golden, near the intersection of Colorado Hughway 93 and Washington Avenue. At the top of the hill with Opuntia, Commandra, Castilleja, and Linaria. 39.7687N, 105.2334W. WGS 1984 Elev. 1810 m.

Locations: Upper Washington Avenue Open Space.
Full Size ImageHabitat of Coll. No. 1593, Viola nuttallii  

1593  Field identification: Viola nuttallii.

Viola nuttallii Pursh. Nuttall's Violet.

Upper Washington Avenue Open Space, Jefferson County, Colorado. Small (4 acre) fallow city-owned parcel in northern Golden, near the intersection of Colorado Highway 93 and Washington Avenue. On the west slope, near top of hill. 39.7685N, 105.2335W. WGS 1984 Elev. 1819 m.

  1594  Field identification: Colutea arborescens

Colutea arborescens L. Bladder Senna.

Upper Washington Avenue Open Space, Jefferson County, Colorado. Small (4 acre) fallow city-owned parcel in northern Golden, near the intersection of Colorado Highway 93 and Washington Avenue. North-central area near fence with neighbor's discarded yard waste. 39.7688N, 105.2327W. WGS 1984 Elev. 1810 m.


Full Size ImageInterior of flower of Coll. No. 1595, Mertensia lanceolata  
1595  Field identification: Mertensia lanceolata.

Mertensia lanceolata (Pursh) DC. Prairie Bluebells.

Upper Washington Avenue Open Space, Jefferson County, Colorado. Small (4 acre) fallow city-owned parcel in northern Golden, near the intersection of Colorado Highway 93 and Washington Avenue. North-central portion of open space on northeast slopes. 39.7687N, 105.2328W. WGS 1984 Elev. 1812 m.

The associated image is intended to show that the filaments are as long as the anthers and attached near the throat of the corolla tube at the level of the fornices, and there is a ring of hairs at the base of the corolla tube.

  1596  Field identification: Muscari botryoides.

Muscari botryoides (L.) Mill. Common Grape Hyacinth.

Upper Washington Avenue Open Space, Jefferson County, Colorado. Small (4 acre) fallow city-owned parcel in northern Golden, near the intersection of Colorado Highway 93 and Washington Avenue. North-central area, near neighbor's fences. 39.7688N, 105.2328W. WGS 1984 Elev. 1811 m.

 

   

Thursday, May 5th

Ranson/Edwards Homestead Open Space
 
  1597  Field identification: Alyssum simplex.

Alyssum simplex Rudolphi. European Madwort.

Ranson/Edwards Homestead Open Space Park, Jefferson County, Colorado. High plains above Rocky Flats, 1.7 miles west on Colorado Highway 72 from Colorado Highway 93, then 0.9 miles north on Plain View Road, to an old ranch road. Roadside and among short grasses, older terrace of Coal Creek. 39.8843N, 105.2612W. WGS 1984 Elev. 1910 m. Some sepals persistent and some filaments winged.


Full Size ImageColl. No. 1598, Prunus americana
Full Size ImageColl. No. 1598, Prunus americana  
1598  Field identification: Prunus americana.

Prunus americana Marshall. American Plum.

Ranson/Edwards Homestead Open Space Park, Jefferson County, Colorado. High plains above Rocky Flats, 1.7 miles west on Colorado Highway 72 from Colorado Highway 93, 0.9 miles north on Plainview Road, then 300 meters east on an old ranch road to the lower terrace of Coal Creek. 39.8839N, 105.2588W. WGS 1984 Elev. 1925 m. Blooms first, then leafs out, white flowers.

  1599  Field identification: Brassicaceae, annual, glabrous.

 

   

Monday, May 8th

 

Other articles: Social Trail along trail

Locations: North Table Mountain Park.
Full Size ImageColuber constrictor mormon “Western yellow-bellied racer” on North Table Mountain  

North Table Mountain, by way of social trail at Easley Road and Hwy 58, to the top of the mesa on North Table Loop.
Full Size Image
Coluber constrictor mormon “Western yellow-bellied racer” on North Table Mountain
 
  Lithospermum incisum, one plant seen beside game trail.

Other articles: Golden Checklist Flora Cynoglossum officinale
Full Size ImageObs. No. 1552, Cynoglossum officinale
Full Size ImageObs. No. 1552, Cynoglossum officinale  

Field identification: Cynoglossum officinale L. Gypsyflower.

Other articles: North Table Loop below rim
Full Size ImageObs. No. 1553, Coryphantha vivipara  

Field identification: Coryphantha vivipara
  1600  Field identification: Parthenocissus quinquefolia, Virginia Creeper.

Parthenocissus quinquefolia (L.) Planch. Virginia Creeper.

North Table Mountain Park, Jefferson County, Colorado. Unnamed canyon on south side of North Table Mountain, 1.8 km. north northwest of the GNIS location of Golden. In the creek bed below North Table Loop trail. 39.7704N, 105.2125W. WGS 1984 Elev. 1844 m. Current year tendrils undeveloped, previous year tendrils appear to have adhesive pads.

  1601  Field identification: Galium aparine.

Galium aparine L. Sticky Willy, Cleavers.

North Table Mountain Park, Jefferson County, Colorado. Unnamed canyon on south side of North Table Mountain, 1.8 km. north northwest of the GNIS location of Golden. In the creek bed below North Table Loop trail. 39.7705N, 105.2127W. WGS 1984 Elev. 1859 m. Annual, cotyledons still attached. Four petals, white.

Other articles: North Table Loop near creek  

1602  Field identification: Eleocharis, maybe E. palustris.

Eleocharis R. Br. Spikerush.

North Table Mountain Park, Jefferson County, Colorado. Southern portion of North Table Mountain just above a break in slope above an unnamed canyon draining into Clear Creek, 1.85 km. north northeast of the GNIS location of Golden. 39.7716N, 105.215W. WGS 1984 Elev. 1920 m. Running water.

Other articles: North Table Loop near creek  

1602.1  Field identification: Veronica, maybe V. arvensis.

Veronica arvensis L. Corn Speedwell.

North Table Mountain Park, Jefferson County, Colorado. Southern portion of North Table Mountain just above a break in slope above an unnamed canyon draining into Clear Creek, 1.85 km. north northeast of the GNIS location of Golden. 39.7716N, 105.215W. WGS 1984 Elev. 1920 m. See also my collection 1344, 13 May 2016, at the same location.

Coll. No. 1602.1, 8 May 2017, characters observed: Annual, 12 cm., growing in standing water; Stem, erect, some branched at base and decumbent to ascending, unevenly spreading multicellular hairy; Leaves, cauline, opposite, 10 mm. × 7 mm. wide, ovate, margin serrate, appressed hairy; Inflorescence, elongated terminal raceme; Pedicels, 1.0-1.2 mm.; Corolla, limb 3 mm.; Petals, 2 mm. × 1.5 mm. wide, color blue; Style, 0.5 mm., < notch; Fruit, 3.5 mm. × 3.2 mm wide, notch, 0.7 mm., margin glandular hairy.

 

   

Saturday, May 13th

 

Locations: Colorado School of Mines Survey Field. Windy Saddle Park.
Full Size ImageColorado School of Mines Survey Field from the northwest corver.
Full Size ImageColorado School of Mines Survey Field from the northwest corver.  

Colorado School of Mines and lowest Windy Saddle Park.
  1603  Field identification: Lithospermum incisum.

Mertensia lanceolata (Pursh) DC. Prairie Bluebells.

Colorado School of Mines Survey Field, Jefferson County, Colorado. High plains at the lowest slopes of Lookout Mountain, northwest corner of the Survey Field, near Lookout Mountain Road, 1.90 km. southwest of the GNIS location of Golden. 39.7396N, 105.229W. WGS 1984 Elev. 1873 m. Uncommon but widespread, many have broken stems from snow earlier in week. North bank of gulch.

  1604  Field identification: Rubus deliciousus.

Rubus deliciosus Torr. Delicious raspberry.

Colorado School of Mines Survey Field, Jefferson County, Colorado. Northwest corner of the Survey Field, near Lookout Mountain Road, 1.9 km. southwest of the GNIS location of Golden. 39.7397N, 105.2296W. WGS 1984 Elev. 1870 m. Growing with Ribes cereum.

  1605  Field identification: Ribes cereum.

Ribes cereum Douglas. Wax Currant.

Colorado School of Mines Survey Field, Jefferson County, Colorado. Northwest corner of the Survey Field, near Lookout Mountain Road, 1.9 km. southwest of the GNIS location of Golden. 39.7394N, 105.2297W. WGS 1984 Elev. 1874 m. Growing with Rubus deliciosus.

  1606  Field identification:Juniperus communis.

Juniperus communis L. var. depressa. Common Juniper.

Colorado School of Mines Survey Field, Jefferson County, Colorado. High plains at the lowest slopes of Lookout Mountain, northwest corner of the Survey Field, near Lookout Mountain Road, 1.95 km. southwest of the GNIS location of Golden. 39.7392N, 105.2297W. WGS 1984 Elev. 1880 m. Shoulder of small gulch.


Full Size ImageFruit of Coll. No. 1607, Lepidium campestre
Full Size ImageAuriculate leaf of Coll. No. 1607, Lepidium campestre  
1607  Field identification: Brassicaceae.

Lepidium campestre (L.) W. T. Aiton. Field Pepperweed.

Colorado School of Mines Survey Field, Jefferson County, Colorado. High plains at the lowest slopes of Lookout Mountain, northwest corner of the Survey Field, near Lookout Mountain Road, 1.95 km. southwest of the GNIS location of Golden. 39.7392N, 105.2296W. WGS 1984 Elev. 1879 m. Annual, small white flowers. Growing at edges of Juniperus communis.

  1608  Field identification: Mertensia lanceolata.

Mertensia lanceolata (Pursh) DC. Prairie Bluebells.

Colorado School of Mines Survey Field, Jefferson County, Colorado. High plains at the lowest slopes of Lookout Mountain, northwest corner of the Survey Field, near Lookout Mountain Road, 1.95 km. southwest of the GNIS location of Golden. 39.7392N, 105.2299W. WGS 1984 Elev. 1877 m.

  1609  Field identification: Prunus virginiana.

Prunus virginiana L. Chokecherry.

Colorado School of Mines Survey Field, Jefferson County, Colorado. High plains at the lowest slopes of Lookout Mountain, northwest corner of the Survey Field, near Lookout Mountain Road, 1.95 km. southwest of the GNIS location of Golden. 39.7391N, 105.2301W. WGS 1984 Elev. 1887 m. Small, heavily browsed shrubs. North bank of gulch.

  1610  Field identification: Cerastium arvense L. ssp. strictum Gaudin

Cerastium arvense L. ssp. strictum Gaudin. Field Chickweed.

Windy Saddle Park, Jefferson County, Colorado. Lowest slopes of Lookout Mountain, just above highest plains, western edge of Windy Saddle Park, near Lookout Mountain Road, 1.95 km. southwest of the GNIS location of Golden. 39.7393N, 105.2321W. WGS 1984 Elev. 1917 m.

 

   

Monday, May 15th

 

Other articles: Social Trail (N. Ford to Jackson) n. e. corner Social Trail (Up. Wash. Ave. OS) near top

Locations: Upper Washington Avenue Open Space.
Full Size ImageArea mowed by neighbors in the public open space.  

Upper Washington Avenue Open Space
Full Size Image
High density of Echinocereus viridiflorus
 

Other articles: Social Trail (Up. Wash. Ave. OS) at tree
Full Size ImageColl. No. 1611, Prunus virginiana, below an, as yet, unidentified small tree.  

1611  Field identification: Prunus virginiana.

Prunus virginiana L. Chokecherry.

Upper Washington Avenue Open Space, Jefferson County, Colorado. Small (4 acre) fallow city-owned parcel in northern Golden, near the intersection of Colorado Highway 93 and Washington Avenue, 1.75 km. northwest of the GNIS location of Golden. 39.7684N, 105.2328W. WGS 1984 Elev. 1816 m. Shrubs below an undetermined small tree, probably a hackberry, per the leaf galls.

  1612  Field identification: Erigeron, probably not E. flagillaris.

Erigeron tracyi Greene. Running Fleabane.

Upper Washington Avenue Open Space, Jefferson County, Colorado. Small (4 acre) fallow city-owned parcel in northern Golden, near the intersection of Colorado Highway 93 and Washington Avenue, 1.75 km. northwest of the GNIS location of Golden. 39.7684N, 105.2328W. WGS 1984 Elev. 1817 m. South side of hill, near the informal bench.

  1613  Field identification: Alyssum simplex.

Alyssum simplex Rudolphi. European Madwort.

Upper Washington Avenue Open Space, Jefferson County, Colorado. Small (4 acre) fallow city-owned parcel in northern Golden, near the intersection of Colorado Highway 93 and Washington Avenue, 1.75 km. northwest of the GNIS location of Golden. 39.7686N, 105.2327W. WGS 1984 Elev. 1818 m. East-facing slope.

Other articles: Social Trail (Up. Wash. Ave. OS) near top
Full Size ImageColl. No. 1614, Castilleja integra, along the top of the Upper Washington Avenue Open Space.  

1614  Field identification: Castilleja, likely C. integra.

Castilleja integra A. Gray. Wholeleaf Indian Paintbrush.

Upper Washington Avenue Open Space, Jefferson County, Colorado. Small (4 acre) fallow city-owned parcel in northern Golden, near the intersection of Colorado Highway 93 and Washington Avenue, 1.75 km. northwest of the GNIS location of Golden. 39.7686N, 105.2328W. WGS 1984 Elev. 1818 m. Top of hill in the remnant short-grass prairie found there.

Bracts, 31 mm. × 7 mm. wide, entire or lobed near tip, lowest green, becoming increasingly red-orange from distal end of bractm and toward the distal inflorescence.

  1615  Field identification: Oxytropis lambertii.

Oxytropis lambertii Pursh. Purple Locoweed.

Upper Washington Avenue Open Space, Jefferson County, Colorado. Small (4 acre) fallow city-owned parcel in northern Golden, near the intersection of Colorado Highway 93 and Washington Avenue, 1.75 km. northwest of the GNIS location of Golden. 39.7686N, 105.2332W. WGS 1984 Elev. 1820 m. Southwest slope near top of hill.

  1616  Field identification: Tragopogon dubius.

Tragopogon dubius Scop. Yellow Salsify.

Upper Washington Avenue Open Space, Jefferson County, Colorado. Small (4 acre) fallow city-owned parcel in northern Golden, near the intersection of Colorado Highway 93 and Washington Avenue, 1.75 km. northwest of the GNIS location of Golden. 39.7686N, 105.2331W. WGS 1984 Elev. 1817 m. Common, scattered throughout parcel; these from top of hill.

  1617  Field identification: Lithospermum incisum.

Lithospermum incisum Lehm. Narrowleaf Stoneseed.

Upper Washington Avenue Open Space, Jefferson County, Colorado. Small (4 acre) fallow city-owned parcel in northern Golden, near the intersection of Colorado Highway 93 and Washington Avenue, 1.75 km. northwest of the GNIS location of Golden. 39.7686N, 105.233W. WGS 1984 Elev. 1816 m. Uncommon, scattered throughout parcel; these from top of hill.

  1618  Field identification: Ribes cereum.

Ribes cereum Douglas. Wax Currant.

Upper Washington Avenue Open Space, Jefferson County, Colorado. Small (4 acre) fallow city-owned parcel in northern Golden, near the intersection of Colorado Highway 93 and Washington Avenue, 1.75 km. northwest of the GNIS location of Golden. 39.7689N, 105.2332W. WGS 1984 Elev. 1815 m. In a weedy area near the fence north-central portion of parcel.

  1619  Field identification: Prunus, maybe P. domestica. Nope!

Prunus pensylvanica L. f. Pin Cherry.

Upper Washington Avenue Open Space, Jefferson County, Colorado. Small (4 acre) fallow city-owned parcel in northern Golden, near the intersection of Colorado Highway 93 and Washington Avenue, 1.75 km. northwest of the GNIS location of Golden. 39.7688N, 105.233W. WGS 1984 Elev. 1812 m. Near fence, north edge of parcel.

Coll. No. 1619, 15 May 2017, characters observed: Small tree to 1.5 m., partially leafed out while in bloom; Branches, thorn-less, peeling white, dotted; Leaves, simple, 25 mm. × 23 mm. wide, ovate, pinnately veined, serrate, small glands on distal edge of each tooth, petioles, 7 mm., some have a pair of glands at base of leaf, very sparse short hairs; Inflorescence, flowers in clusters of #5±; Hypanthium, 3.5 mm × 3 mm. wide; Sepals, 1.5 mm., glabrous; Petals, 4.5 mm, white; Stamens, many, #25±; Styles, #1.

  1620  Field identification: Comandra umbellata.

Comandra umbellata (L.) Nutt. ssp. pallida (A. DC.) Piehl. Pale Bastard Toadflax.

Upper Washington Avenue Open Space, Jefferson County, Colorado. Small (4 acre) fallow city-owned parcel in northern Golden, near the intersection of Colorado Highway 93 and Washington Avenue, 1.75 km. northwest of the GNIS location of Golden. 39.7688N, 105.2336W. WGS 1984 Elev. 1816 m. Uncommon, but widespread where not crowded out by invasive exotics.

  1621  Field identification: Astragalus drummondii.

Astragalus drummondii Dougl. ex Hook. Drummond's Milkvetch.

Upper Washington Avenue Open Space, Jefferson County, Colorado. Small (4 acre) fallow city-owned parcel in northern Golden, near the intersection of Colorado Highway 93 and Washington Avenue, 1.75 km. northwest of the GNIS location of Golden. 39.7686N, 105.2339W. WGS 1984 Elev. 1811 m. Western portion, southwest slope. Expected because it is native to Golden, but collected in an area possibly revegetated following adjacent home construction 2006-2007.

  1622  Field identification: Erodium cicutarium.

Erodium cicutarium (L.) L'Her. ex Aiton. Redstem Stork's Bill.

Upper Washington Avenue Open Space, Jefferson County, Colorado. Small (4 acre) fallow city-owned parcel in northern Golden, near the intersection of Colorado Highway 93 and Washington Avenue, 1.75 km. northwest of the GNIS location of Golden. 39.7686N, 105.2339W. WGS 1984 Elev. 1811 m. Scattered around the parcel, in areas where the native or exotic vegetation is not too thick. Colorado Noxious Weed list C.

  1623  Field identification: Scorzonera laciniata.

Scorzonera laciniata L. Cutleaf Vipergrass.

Upper Washington Avenue Open Space, Jefferson County, Colorado. Small (4 acre) fallow city-owned parcel in northern Golden, near the intersection of Colorado Highway 93 and Washington Avenue, 1.75 km. northwest of the GNIS location of Golden. 39.7687N, 105.2339W. WGS 1984 Elev. 1813 m. Western section of parcel, which has possibly been revegetated after adjacent home construction.

 

   

Monday, May 22nd

 

Other articles: Mesa Top Trail below switchback

Locations: North Table Mountain Park.
Full Size ImageColor variation in Tradescantia occidentalis.  

North Table Mountain, from Easley Road, Lithic Trail, North Table Loop, and old road to Mesa Top Trail.
Full Size Image
Spray-painted graffiti on North Table Mountain.
Full Size Image
Small stream on east side of North Table Mountain.
Full Size Image
Mesa Top Trail, on east side of North Table Mountain.
Full Size Image
Old road on the side of North Table Mountain.
Full Size Image
North Table Loop from the Mesa Top Trail
 

Full Size ImageFruit of Astragalus crassicarpus
Full Size ImageHabitat of Astragalus crassicarpus on North Table Mountain.
Full Size ImageColl. No. 1624, Astragalus crassicarpus  
1624  Field identification: Astragalus, maybe A. crassicarpus.

Astragalus crassicarpus Nutt. Groundplum Milkvetch.

North Table Mountain Park, Jefferson County, Colorado. East side of North Table Mountain, near the Easley Road trailhead, on an old abanconed road just above North Table Loop. 39.7805N, 105.1928W. WGS 1984 Elev. 1787 m. In fruit, no flowers, glabrous pods, turning reddish-brown.

  1625  Field identification: Astragalus, flower only, no fruit.

Astragalus flexuosus G. Don. Flexible Milkvetch.

North Table Mountain Park, Jefferson County, Colorado. East side of North Table Mountain, near the Easley Road trailhead, on an old abanconed road just above North Table Loop, 3.7 km. northeast of the GNIS location of Golden. 39.7805N, 105.1928W. WGS 1984 Elev. 1787 m. Flower only, no fruit.

  1626  Field identification: grass, maybe Poa secunda.

Poa pratensis L. Kentucky Bluegrass.

North Table Mountain Park, Jefferson County, Colorado. East side of North Table Mountain, near the Easley Road trailhead, on an old abanconed road just above North Table Loop, 3.7 km. northeast of the GNIS location of Golden. 39.7805N, 105.1927W. WGS 1984 Elev. 1796 m. At base of southeast-facing boulder.


Full Size ImageGrassy habitat of Coll. No. 1627, Zigadenus paniculatus  
1627  Field identification: Zigadenus sp.

Zigadenus paniculatus (Nutt.) S. Watson var. gramineus (Rydb.) Ackerfield. Grassy Death Camas.

North Table Mountain Park, Jefferson County, Colorado. East side of North Table Mountain, near the Easley Road trailhead, on an old abandoned road above North Table Loop, 3.8 km. northeast of the GNIS location of Golden. 39.7834N, 105.1961W. WGS 1984 Elev. 1854 m. Steep, northeast slope.


Full Size ImageColl. No. 1628, Delphinium nuttallianum  
1628  Field identification: Delphinium, likely D. nuttallianum.

Delphinium nuttallianum Pritz. Twolobe Larkspur.

North Table Mountain Park, Jefferson County, Colorado. East side of North Table Mountain, near the Easley Road trailhead, on an old abandoned road above North Table Loop, 3.8 km. northeast of the GNIS location of Golden. 39.7838N, 105.1968W. WGS 1984 Elev. 1852 m. One blue, one lavender, in a thicket of Prunus virginiana on a game trail.

 

   

Thursday, May 25th

 

Locations: Colorado School of Mines Survey Field.  

Southern end of Survey Field.
  1629  Field identification: Lithospermum incisum.

Lithospermum incisum Lehm. Narrowleaf Stoneseed.

Colorado School of Mines Survey Field, Jefferson County, Colorado. High plains below Lookout Mountain (Rocky Mountain Front Range), about 80 meters northwest of the intersection of Fox Hollow Lane with Eagle Ridge Drive, 2.5 km. south of the GNIS location of Golden. 39.733N, 105.2184W. WGS 1984 Elev. 1866 m. In short grass on alluvial mesa.

  1630  Field identification: definitely Poa, maybe P. pratensis.

Poa pratensis L. Kentucky Bluegrass.

Colorado School of Mines Survey Field, Jefferson County, Colorado. High plains below Lookout Mountain (Rocky Mountain Front Range), about 175 meters northwest of the intersection of Fox Hollow Lane with Eagle Ridge Drive, about 2.4 km. south of the GNIS location of Golden. 39.7339N, 105.2189W. WGS 1984 Elev. 1825 m. Among short grasses on alluvial mesa.


Full Size ImageLocation of Coll. No. 1631, Scutellaria brittonii
Full Size ImageColl. No. 1631, Scutellaria brittonii  
1631  Field identification: Scutellaria brittonii.

Scutellaria brittonii Porter. Britton's Skullcap.

Colorado School of Mines Survey Field, Jefferson County, Colorado. High plains below Lookout Mountain (Rocky Mountain Front Range), about 225 meters northwest of the intersection of Fox Hollow Lane with Eagle Ridge Drive, 2.38 km. south of the GNIS location of Golden. 39.7341N, 105.2195W. WGS 1984 Elev. 1818 m. Edge of borrow pit in reddish soil.

  1632  Field identification: Veronica, maybe V. serpyllifolia.

Veronica arvensis L. Corn Speedwell.

Colorado School of Mines Survey Field, Jefferson County, Colorado. High plains below Lookout Mountain (Rocky Mountain Front Range), about 265 meters northwest of the intersection of Fox Hollow Lane with Eagle Ridge Drive, 2.37 km. south of the GNIS location of Golden. Beside a small creek tributary to Deadman Gulch. 39.7342N, 105.22W. WGS 1984 Elev. 1813 m. Annual, flowers blue.


Full Size ImageLocation of Coll. Nos. 1632-4.
Full Size ImageLocation of Coll. Nos. 1632-4.  
1633  Field identification: Brassicaceae, annual, white flowers.

Lepidium campestre (L.) W. T. Aiton. Field Pepperweed.

Colorado School of Mines Survey Field, Jefferson County, Colorado. High plains below Lookout Mountain (Rocky Mountain Front Range), about 265 meters northwest of the intersection of Fox Hollow Lane with Eagle Ridge Drive, 2.37 km. south of the GNIS location of Golden. Beside a small creek tributary to Deadman Gulch.. 39.7342N, 105.22W. WGS 1984 Elev. 1814 m. Annual, white flowers. Fruit winged apically.

  1634  Field identification: Brassicaceae, yellow flowers.

Barbarea vulgaris R. Br. Garden Yellowrocket.

Colorado School of Mines Survey Field, Jefferson County, Colorado. High plains below Lookout Mountain (Rocky Mountain Front Range), about 265 meters northwest of the intersection of Fox Hollow Lane with Eagle Ridge Drive, 2.37 km. south of the GNIS location of Golden. Beside a small creek tributary to Deadman Gulch.. 39.7341N, 105.22W. WGS 1984 Elev. 1815 m. Flowers yellow.

  Thlaspi arvense L. Field Penny Cress.

Colorado School of Mines Survey Field, Jefferson County, Colorado. High plains below Lookout Mountain (Rocky Mountain Front Range), about 265 meters northwest of the intersection of Fox Hollow Lane with Eagle Ridge Drive, 2.37 km. south of the GNIS location of Golden. Beside a small creek tributary to Deadman Gulch. 39.7341N, 105.22W. WGS 1984 Elev. 1815 m.

  1635  Field identification: Astragalus drummondii

Astragalus drummondii Dougl. ex Hook. Drummond's Milkvetch.

Colorado School of Mines Survey Field, Jefferson County, Colorado. High plains below Lookout Mountain (Rocky Mountain Front Range), 2.36 km. south south southwest of the GNIS location of Golden. 39.7343N, 105.2229W. WGS 1984 Elev. 1839 m. Grassy field. Large group of about 50 plants here.

  1636  Field identification: Lupinus argenteus.

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

Colorado School of Mines Survey Field, Jefferson County, Colorado. Southern portion of Survey Field, highest plains at the base of the Rocky Mountain Front Range (lowest slopes of Lookout Mountain), 2.45 km. south southwest of the GNIS location of Golden. 39.7336N, 105.2247W. WGS 1984 Elev. 1870 m. Recovering from being browsed, i.e., early stems were bitten off.

  1637  Field identification: Packera, maybe P. plattensis.

Packera plattensis (Nuttall) W. A. Weber & . Lve. Prairie Groundsel.

Colorado School of Mines Survey Field, Jefferson County, Colorado. Southwestern part of Survey Field, lowest slopes of Lookout Mountain (Rocky Mountain Front Range), 2.56 km. south southwest of the GNIS location of Golden. 39.7327N, 105.2253W. WGS 1984 Elev. 1875 m. North-facing slope, above a small stream.


Full Size ImageHabitat of Coll. No. 1638, Erysimum capitatum  
1638  Field identification: Erysimum capitatum.

Erysimum capitatum (Hook.) Greene. Sanddune Wallflower.

Colorado School of Mines Survey Field, Jefferson County, Colorado. Southwestern part of Survey Field, lowest slopes of Lookout Mountain (Rocky Mountain Front Range), 2.56 km. south southwest of the GNIS location of Golden. 39.7329N, 105.2194W. WGS 1984 Elev. 1841 m. Grassy alluvial terrace under power lines.

 

   

Tuesday, May 30th

 

Other articles: Social Trail (Up. Wash. Ave. OS) west of top

Locations: Upper Washington Avenue Open Space.
Full Size ImageGeneral view looking east across the top of the hill.  

Full Size Image
Sprinkler and plastic landscape netting in the western section.
Full Size Image
One of two irrigation pipes on the west slope.
Upper Washington Avenue Open Space.

Full Size ImageColl. No. 1639, Penstemon secundiflorus
Full Size ImageInflorescence of Coll. No. 1639, Penstemon secundiflorus  
1639  Field identification: Penstemon secundiflorus.

Penstemon secundiflorus Benth. Sidebells Penstemon.

Upper Washington Avenue Open Space, Jefferson County, Colorado. Small (4 acre) fallow city-owned parcel in northern Golden, near the intersection of Colorado Highway 93 and Washington Avenue, 1.75 km. northwest of the GNIS location of Golden. 39.7686N, 105.2329W. WGS 1984 Elev. 1811 m. Common in less-disturbed and less-invaded areas near the top of hill.


Full Size ImageInflorescence of Coll. No. 1640, Penstemon virens  
1640  Field identification: Penstemon virens

Penstemon virens Pennell ex Rydb. Front Range Beardtongue.

Upper Washington Avenue Open Space, Jefferson County, Colorado. Small (4 acre) fallow city-owned parcel in northern Golden, near the intersection of Colorado Highway 93 and Washington Avenue, 1.75 km. northwest of the GNIS location of Golden. 39.7685N, 105.233W. WGS 1984 Elev. 1811 m. Common in less-disturbed and less-invaded areas near the top of hill.

Other articles: Golden Checklist Flora Linaria dalmatica
Full Size ImageColl. No. 1641, Linaria dalmatica  

1641  Field identification: Linaria dalmatica.

Linaria dalmatica (L.) Mill. Dalmatian ToadFlax.

Upper Washington Avenue Open Space, Jefferson County, Colorado. Small (4 acre) fallow city-owned parcel in northern Golden, near the intersection of Colorado Highway 93 and Washington Avenue, 1.75 km. northwest of the GNIS location of Golden. 39.7686N, 105.2329W. WGS 1984 Elev. 1821 m. Top of hill, among best area of native vegetation. Colorado Noxious Weed List B.

  1642  Field identification: Physaria montana.

Physaria montana (A. Gray) Greene. Mountain Bladderpod.

Upper Washington Avenue Open Space, Jefferson County, Colorado. Small (4 acre) fallow city-owned parcel in northern Golden, near the intersection of Colorado Highway 93 and Washington Avenue, 1.75 km. northwest of the GNIS location of Golden. 39.7686N, 105.2329W. WGS 1984 Elev. 1818 m. Top of hill, among most intact area of native vegetation.


Full Size ImageInflorescence of Coll. No. 1643, Packera tridenticulata
Full Size ImageColl. No. 1643, Packera tridenticulata  
1643  Field identification: Senecio or Solidago.

Packera tridenticulata (Rydb.) W.A. Weber & . Lve. Three-Tooth Ragwort.

Upper Washington Avenue Open Space, Jefferson County, Colorado. Small (4 acre) fallow city-owned parcel in northern Golden, near the intersection of Colorado Highway 93 and Washington Avenue, 1.75 km. northwest of the GNIS location of Golden. 39.7686N, 105.2329W. WGS 1984 Elev. 1817 m. Top of hill, among most intact area of native vegetation.

Coll. No. 1643, 30 May 2017, characters observed: Perennial, to 25 cm., densely tomentose below, thinning above; Leaves, mostly basal, petiole 40 mm. + blade 24 mm. × 7 mm. wide, sparsely shallowly toothed, few cauline, tomentose in the axils, petiole 20 mm. + blade 24 mm. × 4 mm. wide, sparsely shallowly toothed, a few are 3-lobed at tip; Inflorescence, corymbiform, heads #12±, flowers of 2 kinds; Involucre, 6 mm. × 11 mm. wide, bowl-shaped; Phyllaries, 1 series (with little overlap), 4 mm. × 1.2 mm. wide, mostly green, 2+ veins, 1 margin chartaceous; Receptacle, epaleate; Rays, #11±, fertile, tube 2.5 mm. + blade 5.5 mm. × 2 mm. wide, yellow; Disc flowers, yellow; Pappus, capillary bristles, 4.5 mm.; Cypsela, 2.5 mm., glabrous.

  1644  Field identification: Bromus tectorum.

Bromus tectorum L. Cheat Grass.

Upper Washington Avenue Open Space, Jefferson County, Colorado. Small (4 acre) fallow city-owned parcel in northern Golden, near the intersection of Colorado Highway 93 and Washington Avenue, 1.75 km. northwest of the GNIS location of Golden. 39.7686N, 105.2329W. WGS 1984 Elev. 1818 m. Top of hill. Colorado Noxious Weed List C.

Other articles: Golden Checklist Flora Elaeagnus angustifolia
Full Size ImageColl. No. 1645, Elaeagnus angustifolia  

1645  Field identification: Elaeagnus angustifolia.

Elaeagnus angustifolia L. Russian Olive.

Upper Washington Avenue Open Space, Jefferson County, Colorado. Small (4 acre) fallow city-owned parcel in northern Golden, near the intersection of Colorado Highway 93 and Washington Avenue, 1.75 km. northwest of the GNIS location of Golden. 39.7689N, 105.2335W. WGS 1984 Elev. 1816 m. Along the north fence. Spreading, one mature plant, one young plant to the west. Colorado Noxious Weed List B.

  1646  Field identification: Medicago sativa.

Medicago sativa L. Alfalfa.

Upper Washington Avenue Open Space, Jefferson County, Colorado. Small (4 acre) fallow city-owned parcel in northern Golden, near the intersection of Colorado Highway 93 and Washington Avenue, 1.75 km. northwest of the GNIS location of Golden. 39.7686N, 105.2344W. WGS 1984 Elev. 1805 m. Western section of parcel, which appears to have been revegetated following residential constriction in 2006-2007.

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Date and time this article was prepared: 3/25/2019 5:49:43 PM