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, 2018

 

 

 

 

Locations: Upper Washington Avenue Open Space.  

Sunday, May 6th

Upper Washington Avenue Open Space.

 

Full Size ImageColl. No. 1798, Celtis reticulata
Full Size ImageColl. No. 1798, Celtis reticulata  
1798  Field identification: Celtis reticulata, in bloom.
Celtis reticulata Torr. Net-Leaved Hackberry.

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, 105.2326W. WGS 1984 Elev. 1794 m. Two trees, three short branches taken from each. Just off the top of the hill to the south.

 

 

Locations: North Table Mountain Park.  

Monday, May 7th

North Table Mountain, from Easley Road, Lithic Trail, North Table Loop, Mesa Top Trail, Cottonwood Canyon Trail, North Table Loop, to Lithic Trail and Easley Road.

Other articles: Lithic Trail at lower switchback
Full Size ImageColl. No, 1799, Celtis reticulata
Full Size ImageColl. No, 1799, Celtis reticulata  

1799  Field identification: Celtis reticulata.
Full Size Image
Coll. No. 1799, Celtis reticulata
Full Size Image
Coll. No. 1799, Celtis reticulata
Celtis reticulata Torr. Net-Leaved Hackberry.

North Table Mountain Park, Jefferson County, Colorado. Lower east slopes of North Table Mountain, along the upper portion of the Lithic Trail and nearby portions of the North Table Loop, 3.77 km. northeast of the GNIS location of Golden 39.7812N, 105.1926W. WGS 1984 Elev. 5826 ft. Several small trees scattered on the hillslope.

Other articles: North Table Loop at Coll. No. 1800
Full Size ImageHabitat of Coll. No. 1800, Amelanchier alnifolia  

1800  Field identification: Amelanchier alnifolia
Amelanchier alnifolia (Nutt.) Nutt. ex M. Roem. Saskatoon Serviceberry.

North Table Mountain Park, Jefferson County, Colorado. A few small shrubs on slopes of northeast aspect, lower east slopes of North Table Mountain, 3.83 km. northeast of the GNIS location of Golden. 39.7833N, 105.1946W. WGS 1984 Elev. 1796 m.

Coll. No. 1800-1801, 7 May 2018, characters oberved: Shrub, to 1 m.; Stems, branches unarmed; Leaves, simple, petiole, 8 mm., blade, 22-32 mm. × 19-32 mm. wide, veins, pinnate, surface, sparsely hairy above, sparsely to moderately hairy below, margin, serrate; Flowers, borne singly, pedicels, 10 mm., petals 9 mm. × 4.5 mm. wide, color cream; Ovary, inferior, tip hairy; Styles, #(4)5;

Other articles: North Table Loop at Coll. No. 1801
Full Size ImageColl. No. 1801, Amelanchier alnifolia
Full Size ImageColl. No. 1801, Amelanchier alnifolia  

1801  Field identification: Amelanchier alnifolia
Amelanchier alnifolia (Nutt.) Nutt. ex M. Roem. Saskatoon Serviceberry.

North Table Mountain Park, Jefferson County, Colorado. Slopes of northeast aspect, lower east slopes of North Table Mountain, 4.00 km. northeast of the GNIS location of Golden. 39.7854N, 105.1948W. WGS 1984 Elev. 1841 m. Beside North Table Loop, numerous small shrubs.

Coll. No. 1800-1801, 7 May 2018, characters oberved: Shrub, to 1 m.; Stems, branches unarmed; Leaves, simple, petiole, 8 mm., blade, 22-32 mm. × 19-32 mm. wide, veins, pinnate, surface, sparsely hairy above, sparsely to moderately hairy below, margin, serrate; Flowers, borne singly, pedicels, 10 mm., petals 9 mm. × 4.5 mm. wide, color cream; Ovary, inferior, tip hairy; Styles, #(4)5;

Other articles: North Table Loop along trail
Full Size ImageColl. No. 1802, Corylus cornuta
Full Size ImageColl. No. 1802, Corylus cornuta  

1802  Field identification: Corylus cornuta, leaves just beginning, no reproductive parts.
Corylus cornuta Marshall. Beaked Hazelnut.

North Table Mountain Park, Jefferson County, Colorado. Lower northeast slopes of North Table Mountain, adjacent to North Table Loop, which has the appearance of once having been a road at this location, 4.55 km. northeast of the GNIS location of Golden. 39.7922N, 105.1974W. WGS 1984 Elev. 1830 m. Tree, just beginning to leaf out, no reproductive structures. Determination tentative.

Other articles: Mesa Top Trail below closure Glossary petiolule
Full Size ImageColl. No. 1803, Medicago lupulina.
Full Size ImageColl. No. 1803, Medicago lupulina  

1803  Field identification: Medicago lupulina
Full Size Image
Coll. No. 1803, Medicago lupulina
Full Size Image
Coll. No. 1803, Medicago lupulina
Medicago lupulina L. Black Medick.

North Table Mountain Park, Jefferson County, Colorado. Eastern slope of North Table Mountain, just below the rim of the mesa, beside the Mesa Top Trail which is a former road, 3.83 km. northeast of the GNIS location of Golden 39.7848N, 105.1974W. WGS 1984 Elev. 1830 m. Small yellow flowers on Mesa Top Trail.

Coll. No. 1803, 7 May 2018, characters observed: Annual herb, prostrate, to 1 cm. × 50 cm. wide; Leaves, compound, stipules, leaf-like, 6.5 mm., petioles, 11 mm., leaflets, #3, obovate, 5 mm. × 5-6 mm. wide, margin denticulate, middle leaflet extended beyond lateral leaflet on a petiolule; Inflorescence, compact axillary raceme, 8 mm. × 3.5 mm. wide; Sepals, 1 mm.; Flowers, 2 mm., color yellow; Fruit, unknown -- should be curved.

Other articles: Mesa Top Trail at bridge
Full Size ImageLocation of Coll. No. 1804, Juncus sp.  

1804  Field identification: Juncus interior, immature, determination tentative.
 

Other articles: Cottonwood Canyon Trail at 1st tower
Full Size ImageColl. No. 1805, Poa fendleriana  

1805  Field identification: Poa sp., at first tower.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Poaceae

Poa fendleriana (Steud.) Vasey.  Muttongrass.

North Table Mountain Park, Jefferson County, Colorado. Top of North Table Mountain, east side, between the Cottonwood Canyon Trail near the north end and northernmost tower of the adjacent power line, 3.45 km. northeast of the GNIS location of Golden. 39.7835N, 105.2035W. WGS 1984 Elev. 1959 m. Perennial, clumped, non-rhizomatous grass, in wet shallow soil on basalt caprock of the mesa.

Collected by permit: Jefferson County Open Space, 2018, issued: Mar 1, 2018, to: Tom Schweich.

Tom Schweich 1805. 8-May-2018

Coll. No. 1805, 8 May 2018, characters observed: Perennial grass, to 22 cm., clumped; Roots, fibrous; Stem, herbaceous; Leaves, sheath, 40-80 mm., open; ligule, membranous, 1.5 mm., auricles, absent; blade, 40 mm, revolute, margins, scabrous; Inflorescence, 1 per culm, >leaves, contracted panicle, 80 mm. × 14 mm. wide, 4± branches; Rachis, not extended, sparsely scabrous; Spikelets, many, 7 mm. × 1.3 mm. wide, similar, borne singly, stalked, pedicels 1-2 mm., 2-many flowered; Compression, lateral; Disarticulation, above the glumes; Glumes, lower, 2.6 mm., veins, #3, upper, 2.7 mm., <lowest floret, veins, #3, keeled, membranous, awns, #0; Florets, 4 per spikelet, all staminate, no pistillate or bisexual florets found; Lemma, 4.5 mm., >glumes, ovate, membranous, hairy proximally to short hairy distally, none cobwebby, color, green-purple, veins, #5, obscure, tip, obtuse; Palea, 3.7 mm., <lemma, membranous, veins, green, ciliate, margin, glabrous, tip, entire; Anthers, 1.7 mm.

Other articles: Cottonwood Canyon Trail head of landslide
Full Size ImageLocation of Coll. No. 1806, Carex praegracilis
Full Size ImageColl. No. 1806, Carex praegracilis  

1806  Field identification: Carex sp., settled on C. praegracilis, but I'm not so sure about this one.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Cyperaceae

Carex praegracilis W. Boott.  Clustered Field-Sedge.

North Table Mountain Park, Jefferson County, Colorado. Beside the Cottonwood Canyon Trail, about 2/3 of the way up Cottonwood Canyon on the southeast flank of North Table Mountain, 3.13 km. northeast of the GNIS location of Golden. 39.7792N, 105.2012W. WGS 1984 Elev. 1889 m. Small patch in head of landslide, growing around a large boulder.

Collected by permit: Jefferson County Open Space, 2018, issued: Mar 1, 2018, to: Tom Schweich.

Tom Schweich 1806. 7-May-2018

` Coll. No. 1806, 8 May 2018. characters observed: Perennial sedge, Habit: rhizomatous; Culms: to 45 mm., scabrous below head; Leaves: 2.2 mm. wide, green, sheaths, white-hyaline, smooth; Inflorescence: 27 mm. × 8 mm. wide, #8-10 spikes, loosely clustered; Spikes: identical appearing, terminal androgynous, lateral androgynous, proximal pistillate, 8 mm. × 5 mm. wide; Bracts: proximal, 24 mm., <inflorescence, setaceous (bristle-like); Pistillate scales: 4 mm. × 2 mm. wide, green mid-vein, brown laterally, hyaline margin, one scale margin just barely folded over edge of perigynum; Perigynia: #15-16 per spike, 3.8 mm. × 1.6 mm. wide, wingless, obscurely veined, glabrous, beak, 0.8 mm., flattish, ±sloping to tip, serrulate, achene to beak tip 1.6 mm.; Achene: 2.1 mm. × 1.3 mm. wide, pretty flat, obovate; Stigma: #2.

Other articles: Lithic Trail at Coll. No. 1807 Field Notes Coll. No. 1815, 10 May 2018
Full Size ImageInflorescence of Coll. No. 1807, Poa fendleriana
Full Size ImageColl. No. 1807, Poa fendleriana  

1807  Field identification: Poa sp.
Poa fendleriana (Steud.) Vasey. Muttongrass.

North Table Mountain Park, Jefferson County, Colorado. Lowest eastern slopes of North Table Mountain, beside the Lithic Trail about mid-way between the Fairmont Ditch and North Table Loop, 3.80 km. northeast of the GNIS location of Golden, 39.7818N, 105.1927W. WGS 1984 Elev. 1777 m. "Reddish stems," actually reddish proximal sheaths, attracted me from trailside.

Coll. No. 1807, 7 May 2018, characters observed: Perennial grass, 50-60 cm., clumped, not rhizomatous; Roots, fibrous; Stems, herbaceous; Internodes, hollow, glabrous; Leaves, blade and sheath differentiated; Sheath, 120 mm., open at least ½, minutely scabrous, reddish color proximally; Ligule, membraneous, 2 mm., auricles absent; Blade, 25 mm., scabrous, margin scabrous; Inflorescence, 1 per culm, > leaves, panicle, 110 mm. × 20 mm. wide, spikelets many; Rachis, sparsely scabrous on all sides, not extended beyond upper spikelet; Spikelets, many, similar, borne singly, one per node, stalked, 6 mm.; Compression, lateral; Disarticulation, above the glumes; Glumes, lower 3.7 mm., upper 4.3 mm., veins 3(5); Florets, 5-6 per spikelet, pistillate; Axis, hairy, extended beyond upper floret; Lemma, 5 mm., > glumes, membraneous, keeled, keel and margin are villous proximally, hairs to 0.7 mm., veins definitely ≥3, maybe 5, parallel, tip entire, obtuse; Palea, 2.5 mm., <lemma, proximally villous, keels ciliate, margin glabrous; Stamens, none found; Ovary, glabrous, yellow-brown; Stigma, feathery;

Other articles: North Table Loop at bolts
Full Size ImageTwo of many bolts just below the North Table Loop.  

There is an area that has a double row of bolts just below the trail.

Other articles: North Table Loop at s. switchback
Full Size ImageBase of lava flow along North Table Loop.
Full Size ImageBase of lava flow along North Table Loop.  

At the switchback, it looks like the bottom of a lava flow is exposed.

 

 

Other articles: Mesa Spur Trail at W. 58th

Locations: North Table Mountain Park.  

Thursday, May 10th

 

Other articles: Mesa Spur Trail along trail
Full Size ImageHabitat of Coll. No. 1808, Lepidium perfoliatum
Full Size ImageColl. No. 1808, Lepidium perfoliatum  

1808  Field identification: Lepidium perfoliatum.
Full Size Image
Coll. No. 1808, Lepidium perfoliatum
Plants of Jefferson County Open Space
Jefferson County, Colorado
Brassicaceae

Lepidium perfoliatum L.  Clasping Pepperweed.

North Table Mountain Park, Jefferson County, Colorado. In the median and beside the Mesa Spur Trail, near the crossing of Ramstetter Creek, 130 m. south of W. 58th Avenue, surrounded on both sides by horse corrals and facilities, 5.07 km. north of the GNIS location of Golden. 39.8006N, 105.2124W. WGS 1984 Elev. 1788 m.

Collected by permit: Jefferson County Open Space, 2018, issued: Mar 1, 2018, to: Tom Schweich.

Tom Schweich 1808. 11-May-2018

Full Size ImageLocation of Collections 1809 to 1812.1
Full Size ImageLocation of Collections 1809 to 1812.1
Full Size ImagePackera Senecio and Taraxacum, but can you see the Boechera?  
1809  Field identification: Leucocrinum montanum
Plants of Jefferson County Open Space
Jefferson County, Colorado
Anthericeae

Leucocrinum montanum Nutt. ex A. Gray.  Star Lily.

North Table Mountain Park, Jefferson County, Colorado. Lowest north slopes of North Table Mountain, on a small flat that appears to be a landslide run-out, 4.8 km. north of the GNIS location of Golden 39.7979N, 105.2088W. WGS 1984 Elev. 1820 m.

Collected by permit: Jefferson County Open Space, 2018, issued: Mar 1, 2018, to: Tom Schweich.

Tom Schweich 1809. 10-May-2018
  1810  Field identification: Astragalus agrestis.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Fabaceae

Astragalus agrestis Douglas ex G. Don.  Purple Milkvetch.

North Table Mountain Park, Jefferson County, Colorado. Lowest north slopes of North Table Mountain, on a small flat that appears to be a landslide run-out, 4.8 km. north northeast of the GNIS location of Golden. 39.7978N, 105.2088W. WGS 1984 Elev. 1818 m. Found among short grasses and forbs in all areas of North Table Mountain.

Collected by permit: Jefferson County Open Space, 2018, issued: Mar 1, 2018, to: Tom Schweich.

Tom Schweich 1810. 10-May-2018


Full Size ImageButton-like caudex of Coll. No. 1811, Senecio integerrimus  
1811  Field identification: Packera plattensis

Plants of Jefferson County Open Space
Jefferson County, Colorado
Asteraceae

Senecio integerrimus Nutt.  Columbia Ragwort.

North Table Mountain Park, Jefferson County, Colorado. Lowest north slopes of North Table Mountain, on a small flat that appears to be a landslide run-out, 4.8 km. north northeast of the GNIS location of Golden. 39.7977N, 105.2087W. WGS 1984 Elev. 1818 m. Numerous plants among short grasses and forbs.

Collected by permit: Jefferson County Open Space, 2018, issued: Mar 1, 2018, to: Tom Schweich.

Tom Schweich 1811. 10-May-2018

Coll. No. 1811, 10 May 2018, characters observed: Perennial, herb, to 40 cm., sap clear, caudex button-like; Stem, multicellular arachnose throughout; Leaves, basal and cauline, alternate, basal, petiole, 70 mm., blade, 75 mm. × 12 mm. wide, sparsely arachnose, margin wavy and revolute in places, reduced above, cauline, sessile, blade 85 mm. × 10 mm. wide, reduced above, margin wavy and revolute in part; Inflorescence, corymbiform, heads #8-10 per stem, somewhat convex, >leaves; Pedicels, 5-20 mm., subtended by a bract to 6 mm., lanceolate; Involucre, 7 mm. × 10 mm wide, bowl-shaped, ±glabrous; Phyllaries, ±equal, in 1 series, 7 mm. × 1.8 mm. wide, green, eglandular, margins ±flat, not clasping ray ovaries, tips acuminate with terminal tuft of hairs; Receptacle, epaleate; Ray flowers, #8-10, tube 4 mm. + blade 5 mm. × 2.5 mm. wide, yellow, fertile; Disk flowers, many, tube 4.5 mm. + lobes 1 mm., yellow; Pappus, many, well-developed, bristles, ±equal; Cypsela, 1.3 mm., brown.


Full Size ImageInflorescence of Coll. No. 1812, Boechera fendleri
Full Size ImageColl. No. 1812, Boechera fendleri  
1812  Field identification: Boechera fendleri, determination tentative.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Brassicaceae

Boechera fendleri (S.Watson) W.A.Weber.  Fendler's rockcress.

North Table Mountain Park, Jefferson County, Colorado. Lowest north slopes of North Table Mountain, on a small flat that appears to be a landslide run-out, 4.8 km. north northeast of the GNIS location of Golden. 39.7978N, 105.2088W. WGS 1984 Elev. 1816 m. Many plants scattered over a small area.

Collected by permit: Jefferson County Open Space, 2018, issued: Mar 1, 2018, to: Tom Schweich.

Tom Schweich 1812. 10-May-2018

Coll. No. 1812, 10 May 2018, characters observed: Perennial (short-lived?), terrestrial, herb, tap-rooted, to 50 cm., branched hairs proximally, glabrous distally; Leaves, basal, petiole 9 mm. + blade 19 mm. × 5.5 mm. wide, oblanceolate, entire, hairs 3-4 branches, cauline sessile, spear-shaped, 21 mm. × 4 mm. wide, auriculate, 1.0-1.5 mm.; Inflorescence, raceme, 125 mm.; Sepals, #4, 4 mm., ovate; Petals, #4, 6 mm., entire, lavender; Stamens, #6; Filaments, 3 mm., narrowly winged; Anthers, 1.5 mm.; Fruit, pedicels, 10 mm., glabrous, 50 mm. × 0.8-1.0 mm. wide, recurved; Ovules, many, biseriate.

Keys easily to B. fendleri in Weber & Wittmann (2012) and Harrington (2nd ed., 1964). Gets lost in Ackerfield (2015, p. 226) at couplet 9, and in FNANM Group 4 at couplet 25, both over the question of whether there are simple trichomes in addition to rayed trichomes on basal leaves and proximal stem. There are only a very few simple trichomes and those are on leaf margins.

  1812.1  Field identification: Viola nuttallii

Plants of Jefferson County Open Space
Jefferson County, Colorado
Violaceae

Viola nuttallii Pursh.  Nuttall's Violet.

North Table Mountain Park, Jefferson County, Colorado. Lowest north slopes of North Table Mountain, on a small flat that appears to be a landslide run-out, 4.8 km. north northeast of the GNIS location of Golden. 39.7978N, 105.2088W. WGS 1984 Elev. 1818 m. Larger plants than typically seen around Golden.

Collected by permit: Jefferson County Open Space, 2018, issued: Mar 1, 2018, to: Tom Schweich.

Tom Schweich 1812.1 10-May-2018

Other articles: North Table Loop near trl jct
Full Size ImageHabitat of Coll. No. 1813, Delphinium nuttallianum.  

1813  Field identification: Delphinium nuttallii

Plants of Jefferson County Open Space
Jefferson County, Colorado
Ranunculaceae

Delphinium nuttallianum Pritz.  Twolobe Larkspur.

North Table Mountain Park, Jefferson County, Colorado. Lower north slopes of North Table Mountain, in a swale beside the North Table Loop, 4.56 km. north northeast of the GNIS location of Golden. 39.7957N, 105.21W. WGS 1984 Elev. 1828 m. Stems from a small cluster of thickened, fleshy, tuber-like roots. Moist friable soil.

Collected by permit: Jefferson County Open Space, 2018, issued: Mar 1, 2018, to: Tom Schweich.

Tom Schweich 1813. 10-May-2018

Other articles: North Table Loop above trl jct
Full Size ImageColl. No. 1814, Phlox, tentatively determined as P. multiflora.  

1814  Field identification: Phlox, maybe P. multiflora.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Polemoniaceae

Phlox multiflora A. Nelson.  Mountain Phlox.

North Table Mountain Park, Jefferson County, Colorado. Lower north slopes of North Table Mountain, on a small ridge overlooking the North Table Loop, 4.51 km. north northeast of the GNIS location of Golden 39.7954N, 105.2106W. WGS 1984 Elev. 1841 m.

Collected by permit: Jefferson County Open Space, 2018, issued: Mar 1, 2018, to: Tom Schweich.

Tom Schweich 1814. 10-May-2018

Other articles: Field Notes Coll. No. 1807, 7 May 2018
Full Size ImageColl. No. 1815, Poa fendleriana  

1815  Field identification: Koeleria macrantha, determination tentative.

Oh geez I can't get this thing into anything but Poa fendleriana but it is full of bisexual florets. Compare it to my Coll. No. 1807.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Poaceae

Poa fendleriana (Steud.) Vasey.  Muttongrass.

North Table Mountain Park, Jefferson County, Colorado. Lower north slopes of North Table Mountain, on the nose of a small ridge in the corner of the North Table Loop, 4.49 km. north northeast of the GNIS location of Golden 39.7952N, 105.2107W. WGS 1984 Elev. 1849 m. Collected with Phlox multiflora and Carex inops var. heliophila.

Collected by permit: Jefferson County Open Space, 2018, issued: Mar 1, 2018, to: Tom Schweich.

Tom Schweich 1815. 10-May-2018

Coll. No. 1815, 10 May 2018, characters observed: Perennial grass, to 50 cm., clumped, not rhizomatous; Stem, herbaceous; Leaves, mostly basal, blade and sheath differentiated; (Cauline) Sheath, 55 mm., open at least ½, minutely scabrous; Ligule, membraneous, 1 mm.; Auricles, 0; (Cauline) Blade, 15-25 mm., rolled, margins minutely scabrous; Inflorescence, 1 per culm, contracted panicle, 85 mm. × 15 mm. wide, spikelets many; Rachis, not extended beyond the upper spikelet; Spikelets, many, similar, borne singly, stalked, narrowly rounded at base, 2-many flowered, 6.5 mm. × 3 mm. wide; Compression, lateral; Disarticulation, unknown; Glumes, lower 3 mm., upper 3.5 mm., keeled, membraneous, awns 0; Florets, 5 per spikelet, bisexual; Rachilla, glabrous, extended beyond upper floret; Lemma, 3 mm., ovate, membraneous, keeled, sparsely villous on proximal keel and margin, veins, ≥3(5), tip entire, obtuse, awns, 0; Palea, 2.9 mm., <lemma, membraneous, keel ciliate; Anthers, 1.5-1.7 mm.; Ovary, glabrous; Stigma, feathery.

Becomes lost in keys requiring that all florets be pistillate, e.g., Shaw (2008) and Ackerfield (2015). Keys easily to Poa fendleriana in keys that do not mention that florets are unisexual or that plant is dioecious, e.g., Hitchcock (2ed, Chase, 1950), Harrington (2ed, 1964), Welsh, et al. (1993), Baldwin (2012), and Weber & Wittman (2012).

Other articles: North Table Loop above trl jct
Full Size ImageNorth slope, junction of North Table Loop and Mesa Spur Trail in foreground.
Full Size ImageColl. No. 1816, Carex inops var. heliophila  

1816  Field identification: Carex inops var. heliophila.
Full Size Image
Inflorescence of Coll. No. 1816, Carex inops var. heliophila
Plants of Jefferson County Open Space
Jefferson County, Colorado
Cyperaceae

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

North Table Mountain Park, Jefferson County, Colorado. Lower north slopes of North Table Mountain, on the nose of a small ridge in the corner of the North Table Loop, 4.49 km. north northeast of the GNIS location of Golden 39.7952N, 105.2107W. WGS 1984 Elev. 1851 m. Collected with Phlox multiflora and Poa fendleriana

Collected by permit: Jefferson County Open Space, 2018, issued: Mar 1, 2018, to: Tom Schweich.

Tom Schweich 1816. 11-May-2018

Other articles: Mesa Spur Trail at Ramstetter Ck

Locations: Ramstetter Creek.
Full Size ImageRamstetter Creek east of Mesa Spur Trail.  

Cross Ramstetter Creek.

 

   

Saturday, May 12th

Prewalk of the Upper Washington Avenue Open Space in preparation for tomorrow's field trip.

Full Size ImageColl. No. 1817, Packera plattensis  
1817  Field identification: Packera, Keyed out while fresh in the office to P. plattensis.

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

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

Upper Washington Avenue Open Space, Jefferson County, Colorado. Near social trail just west of the top of hill. 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. 5950 ft.

Collected by permit: City of Golden, 2018, issued: Feb 23, 2018, to: Tom Schweich.

Tom Schweich 1817. 12-May-2018

Coll. No. 1817, 12 May 2018, characters observed: Perennial herb, 14 cm., from taprooted caudix, sap not milky; Stem, light green, tomentose, densely so in axils; Leaves, mostly basal and few cauline, alternate, petiole 8 mm., blade 10 mm. × 5 mm. wide, oblanceolate, surface, upper thinly tomentose, lower moderately tomentose, especially the mid-vein, margin, crenulate; Inflorescence, head enclosed by involucre, showy; Heads, #10, pedicels, 12 mm.; Involucre, 7 mm. × 5-6 mm. wide, thinly tomentose; Phyllaries, equal, in 1 series, 5 mm. × 0.7 mm. wide, green, flat; Receptacle, epaleate; Flowers, of 2 kinds; Ray flowers, #10, tube 3 mm. + blade 7 mm., yellow, fertile; Disc flowers, many, tube 4 mm. + lobes 0.5 mm., yellow; Pappus, many, well-developed, bristles, 4 mm., ±equal, Style, 2-branched; Fruit, 1 mm., green, beak-less, glabrous.

 

   

Sunday, May 13th

 

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

Locations: Upper Washington Avenue Open Space.
Full Size ImageField Trip group, May 13, 2018.  

Field trip to Upper Washington Avenue Open Space, 13 May 2018.

 

 

Locations: Kinney Run.  

Wednesday, May 16

Kinney Run, from Eagle Ridge Drive part way up to Tripp Ranch.

Other articles: Kinney Run Trail at Deadman Gl Glossary lyrate
Full Size ImageHabitat of Coll. No. 1818, Barbarea vulgaris
Full Size ImageLyrate lower leaf of Coll. No. 1818, Barbarea vulgaris  

1818  Field identification: Barbarea vulgaris

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

Barbarea vulgaris R. Br.  Garden Yellowrocket.

Kinney Run, Jefferson County, Colorado. In a tributary to the locally named “Kinney Run,” recognized by the BGN as Deadman Gulch, 2.8 km. south of the GNIS location of Golden. 39.7308N, 105.2159W. WGS 1984 Elev. 1789 m. Growing in flowing water.

Collected by permit: City of Golden, 2018, issued: Feb 23, 2018, to: Tom Schweich.

Tom Schweich 1818. 16-May-2018

Coll. No. 1818, 16 May 2018, characters observed: Probably a biennial or perennial, to 40 cm., terrestrial but growing in flowing water, glabrous throughout; Leaves, lower cauline, 150 mm. × 45 mm. wide, pinnafitid, lyrate, lobes, #9, terminal lobe 47 mm. × 40 mm. wide, auriculate, auricles, glabrous, leaves reduced upward, upper cauline, sessile, 35 mm. × 18 mm. wide, lobes, 3; Inflorescence, not bracted; Flowers, radial; Sepals, 2.5 mm. × 1.8 mm. wide, ovate, rows, #1, color, yellow; Petals, 6 mm., obovate, claw not conspicuously differentiated from blade, margin, entire, color, yellow; Stamens, #6; Filaments, 4 mm., plain; Anthers, 1 mm.; Fruit, pedicels, 5 mm., glabrous, mature, 19.5 mm. × 0.5 mm. wide, spreading, glabrous.

Other articles: Kinney Run Trail at Deadman Gl  

1819  Field identification: Prunus americana.

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

Prunus americana Marshall.  American Plum.

Kinney Run, Jefferson County, Colorado. Small alluvial terrance between the streambeds of Kinney Run and Deadman Gulch, 2.8 km. south of the GNIS location of Golden 39.7307N, 105.2159W. WGS 1984 Elev. 1804 m. Few shrubs in deep grasses; Ribes aureum and R. cereum also collected here.

Collected by permit: City of Golden, 2018, issued: Feb 23, 2018, to: Tom Schweich.

Tom Schweich 1819. 16-May-2018

Coll. No. 1819, 16 May 2018, characters observed: Spreading woody shrub, to 2 m., blooming before leafing out; Stem, unarmed, glabrous, peeling to brown; Leaves, (immature, at time of flowering), simple, 15 mm. × 5.5 mm. wide, elliptic-rhomboid, bases ±equal, pinnately veined, margin serrate, teeth eglandular, few hairs on petioles and leaf base margin; Flowers in small groups of 2-3, Pedicels, 9-18 mm.; Hypanthium, 2 mm.; Sepals, 2.8 mm., reflexed, few cobwebby hairs adaxially; Petals, free, 5.5 mm. × 2.5 mm. wide, white; Stamens, many (30?); Style, #1, 10 mm.

Other articles: Kinney Run Trail at Deadman Gl Glossary dentate
Full Size ImageCoarsely dentate leaves of Coll. No. 1820, Thlaspi arvense  

1820  Field identification: Thlaspi arvense.

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

Thlaspi arvense L.  Field Penny Cress.

Kinney Run, Jefferson County, Colorado. Small alluvial terrance between the streambeds of Kinney Run and Deadman Gulch, 2.8 km. south of the GNIS location of Golden 39.7309N, 105.2158W. WGS 1984 Elev. 1803 m. Among deep grasses, forbs, and a few shrubs.

Collected by permit: City of Golden, 2018, issued: Feb 23, 2018, to: Tom Schweich.

Tom Schweich 1820. 16-May-2018

Coll. No. 1820, 16 May 2018, characters observed: Annual terrestrial herb, to 50 cm.; Hairs, 0; Roots, tap-rooted; Leaves, cauline, 30 mm. × 9 mm. wide, sessile, basally lobed, sparsely dentate; Inflorescence, raceme; Flowers, radial; Sepals, 1 row, 2 mm. × 1 mm. wide, ovate; Petals, 3.5 mm. × 1 mm. wide, spoon-shaped, margin entire, color white; Stamens, 2 mm.; Anthers, 0.5 mm.; Fruit, pedicels, 15 mm., glabrous, silicle, 10 mm. × 8 mm. wide, spreading; Seeds, many.

Other articles: Kinney Run Trail at Deadman Gl
Full Size ImageInflorescence of Coll. No. 1821, Draba nemorosa
Full Size ImageColl. No. 1821, Draba nemorosa  

1821  Field identification: At first I thought this might be Camelina microcarpa, but now I'm not so sure. It needs a good keying out.
Full Size Image
Overview of Coll. No. 1821, Draba nemorosa

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

Draba nemorosa L.  Woodland Whitlow Grass.

Kinney Run, Jefferson County, Colorado. Small alluvial terrance between the streambeds of Kinney Run and Deadman Gulch, 2.8 km. south of the GNIS location of Golden 39.7308N, 105.2159W. WGS 1984 Elev. 1809 m. Among deep grasses, forbs, and a few shrubs.

Collected by permit: City of Golden, 2018, issued: Feb 23, 2018, to: Tom Schweich.

Tom Schweich 1821. 16-May-2018

Coll. No. 1821, 16 May 2018, characters observed: Annual terrestrial herb, 11 to 25 cm., hairs vary: none, simple, forked, but not dolabriform; Stem, proximal, hairs simple and forked, distal, glabrous; Leaves, basal and cauline, Basal, simple, 12 mm. × 4.5 mm. wide, hairs forked; Cauline, #5-6, sessile, 11 mm. × 4 mm. wide, sparsely dentate, hairs, simple and forked; Inflorescene, raceme; Sepals, rows, #1, 1.3 mm. × 0.7 mm. wide, ovate, color, green turning yellow, abaxial hairs wavy; Petals, 2 mm. × 0.7 mm. wide, spoon-shaped, margin entire, color, yellow; Stamens, #4 or 6, 1.3 mm.; Anthers, 0.3 mm.; Style, very short; Fruit, pedicels, 20 mm., puberulent, body, 7 mm. × 2 mm. wide, ascending, short straight appressed hairs.

  1822  Field identification: Ribes aureum

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

Ribes aureum Pursh.  Golden Currant.

Kinney Run, Jefferson County, Colorado. Small alluvial terrance between the streambeds of Kinney Run and Deadman Gulch, 2.8 km. south of the GNIS location of Golden 39.7307N, 105.2159W. WGS 1984 Elev. 1807 m. Among deep grasses, forbs, and a few shrubs.

Collected by permit: City of Golden, 2018, issued: Feb 23, 2018, to: Tom Schweich.

Tom Schweich 1822. 16-May-2018

  1823  Field identification: Ribes cereum.

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

Ribes cereum Douglas.  Wax Currant.

Kinney Run, Jefferson County, Colorado. Small alluvial terrace between the streambeds of Kinney Run and Deadman Gulch, 2.8 km. south of the GNIS location of Golden 39.7307N, 105.2158W. WGS 1984 Elev. 1803 m. One shrub in this area. Among deep grasses, forbs, and a few shrubs.

Collected by permit: City of Golden, 2018, issued: Feb 23, 2018, to: Tom Schweich.

Tom Schweich 1823. 16-May-2018

  1824  Field identification: Zigadenus paniculatus gramineus

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

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

Kinney Run, Jefferson County, Colorado. Northwest slope of a small hill between Kinney Run and Deadman Gulch, 2.84 km. south of the GNIS location of Golden. 39.7303N, 105.2159W. WGS 1984 Elev. 1814 m.

Collected by permit: City of Golden, 2018, issued: Feb 23, 2018, to: Tom Schweich.

Tom Schweich 1824. 16-May-2018

  1825  Field identification: Scutellaria brittonii

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

Scutellaria brittonii Porter.  Britton's Skullcap.

Kinney Run, Jefferson County, Colorado. East-facing alluvial slope of a small hill between Kinney Run and Deadman Gulch, 2.86 km. south of the GNIS location of Golden. 39.7301N, 105.2158W. WGS 1984 Elev. 1812 m. Small, dense colony.

Collected by permit: City of Golden, 2018, issued: Feb 23, 2018, to: Tom Schweich.

Tom Schweich 1825. 16-May-2018


Full Size ImagePieces of Coll. No. 1826, Astragalus shortianus  
1826  Field identification: Astragalus sp.

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

Astragalus shortianus Torr. & A.Gray.  Short's Milkvetch.

Kinney Run, Jefferson County, Colorado. Small hill between Kinney Run and Deadman Gulch near their junction, 2.86 km. south of the GNIS location of Golden. 39.7301N, 105.2158W. WGS 1984 Elev. 1813 m. Three plants on a steep east-facing alluvial slope.

Collected by permit: City of Golden, 2018, issued: Feb 23, 2018, to: Tom Schweich.

Tom Schweich 1826. 16-May-2018

Coll. No. 1826, 16 May 2018, characters observed: Perennial herb, to 10 cm., acaulescent; Leaves, compound, petiole, 50 mm., blade, 90 mm. × 37 mm. wide, leaflets, #13, 17 mm. × 10 mm. wide, terminal leaflet not a tendril, petiole, rachis, and leaflets with appressed stiff straight hairs; Inflorescence, not an umbel; Calyx, tube 6 mm. + lobes 4 mm., hairs similar; Flower, zygomorphic, banner 22 mm., wings 18 mm., clawed, keel, 22 mm., tip obtuse; Fruit, 35 mm. × 10 mm. wide, falcate, appressed stiff basifixed straight hairs.

Other articles: Field Notes Coll. No. 1783, 12 Apr 2018
Full Size ImageHabitat of Coll. No. 1827, Lithospermum arvense  

1827  Field identification: Lithospermum arvense.

--- Match with 1783.

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

Lithospermum arvense L.  Corn Gromwell.

Kinney Run, Jefferson County, Colorado. Southeast slope of a small hill between Kinney Run and Deadman Gulch, near the junction of those two small streams, 2.89 km. south of the GNIS location of Golden. 39.7299N, 105.2159W. WGS 1984 Elev. 1811 m. The small plants are my collection no. 1783, made 12 April 2018, from the same population.

Collected by permit: City of Golden, 2018, issued: Feb 23, 2018, to: Tom Schweich.

Tom Schweich 1827. 16-May-2018

Coll. No. 1827, 16 May 2018, characters observed: Annual, to 30 cm., hairs appressed with pustular bases; Stem, some branched distally; Leaves, basal and cauline, basal, petiole 5 mm. + blade 13 mm. × 3.5 mm. wide, slightly obovate, margin entire, hairs as above, withering, cauline, alternate, sessile, 19 mm. × 3.7 mm. wide, margin entire, hairs as above; Calyx, lobes, 5.2 mm. × 0.7 mm. wide, enlarged in fruit to 7 mm., hairs as above; Corolla, tube 4 mm. + throat 1 mm. + lobes 1.5 mm., blue to white, abaxial spreading hairy; Stamens, attached in tube; Style, 1.2 mm., Nutlets, #(1-2) 3 (4), 2.8 mm. × 2 mm. wide, green - tan, tuberculed.

Other articles: Golden Checklist Flora Cynoglossum officinale
Full Size ImageHabitat of Coll. No. 1827.1, Cynoglossum officinale.  

1827.1  Field identification: Cynoglossum officinale.

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

Cynoglossum officinale L.  Gypsyflower.

Kinney Run, Jefferson County, Colorado. Southeast slope of a small hill between Kinney Run and Deadman Gulch, near the junction of those two small streams, 2.89 km. south of the GNIS location of Golden. 39.73N, 105.2159W. WGS 1984 Elev. 1811 m. Small colony, along with Lithospermum arvense and Euphorbia peplus. Colorado Noxious Weed List B.

Collected by permit: City of Golden, 2018, issued: Feb 23, 2018, to: Tom Schweich.

Tom Schweich 1827.1 16-May-2018

Other articles: Kinney Run Trail at rock knob

Locations: Kinney Run.
Full Size ImageHabitat of Coll. No. 1828, Physaria vitulifera.  

1828  1828.1  1828.2  Field identification: Physaria vitulifera. Coll. Nos. 1828.1 and 1828.2 subsumed here.
Full Size Image
View of knob where some Physaria vitulifera grow.

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

Physaria vitulifera Rydb.  Roundtip Twinpod.

Kinney Run, Jefferson County, Colorado. Outcrops of sandstone about 2/3 of the way up the west limb of the hogback, east side of Kinney Run, 3.07 km. south of the GNIS location of Golden. 39.7284N, 105.214W. WGS 1984 Elev. 1827 m. Most basal leaves are entire, only a few are once very shallowly dentate. Growing in fractures of sandstone outcrops.

Collected by permit: City of Golden, 2018, issued: Feb 23, 2018, to: Tom Schweich.

Tom Schweich 1828. 16-May-2018

Coll. No. 1828, 16 May 2018, characters observed: Perennial terrestrial herb, to 15 cm., stellate hairy throughout; Roots, tap; Stem, scapose, hairs as above; Leaves, basal and cauline, basal, simple, petiole 15-35 mm. + blade 22-24 mm. × 10-14 mm. wide, few basal leaves with a single pair of teeth, remainder entire, tip barely acuminate, cauline, nearly sessile, 22 mm. × 4.5 mm. wide, margin entire; Inflorescence, raceme, 60-90 mm. × 35 mm, wide; Sepals, #4, rows 1, 7 mm. × 1.5 mm. wide elliptic, green, hairy as above; Petals, 10 mm. × 2 mm. wide, obovate, margin entire, yellow; Stamens, #6 (4 long, 2 short), 6-8 mm.; Filaments, 4.5-6 mm., pair of short filaments slightly winged proximal ½; Anthers, 1.5 mm., saggitate (?); Ovary, 2 mm. × 1.8 mm. wide; Style, 6.4 mm., not elongating in fruit; Fruit, pedicels, 18-20 mm, longest sigmoid, hairs as above, mature fruit, 3 mm. × 4 mm. wide, didymous, apical sinus well-developed, basal sinus much less so, hairy as above.

Will key to P. bellii in Ackerfield (2015) at couplet 17 per the shape of the basal leaves, which are entire to very shallowly once dentate. However, FNANM sends this in the direction of P. vitulifera at couplet 12 based on the relative development of the basal and apical sinuses of the fruit.

Other articles: Golden Checklist Flora deadman gl Kinney Run Trail at rock knob

Locations: Kinney Run.
Full Size ImageYard waste disposal on the ridge above Kinney Run.  

On the ridge east of Kinney Run. I was coming down the ridge towards the lime kiln and saw this coyote across the trail. I think I might have flushed it out of a hiding place just south of the lime kiln.
Full Size Image
View generally north of Kinney Run.
Full Size Image
View generally south of Kinney Run.


Full Size ImageColl. No. 1829, Erigeron flagellaris
Full Size ImageColl. No. 1829, Erigeron flagellaris  
1829  Field identification: Erigeron flagellaris.

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

Erigeron flagellaris A. Gray.  Trailing Fleabane.

Kinney Run, Jefferson County, Colorado. On the west limb of a small hogback, about 2/3 of the way up from Kinney Run to the crest of the hogback, 3.1 km. south of the GNIS location of Golden. 39.7282N, 105.2139W. WGS 1984 Elev. 1830 m. Thin vegetation on sandstone.

Collected by permit: City of Golden, 2018, issued: Feb 23, 2018, to: Tom Schweich.

Tom Schweich 1829. 16-May-2018

 

 

Locations: Ranson/Edwards Homestead Open Space Park.
Full Size ImageThe old homestead at Ranson/Edwards.
Full Size ImagePump near the old homestead.  

Thursday, May 17th

Ranson/Edwards
Full Size Image
North fence of Ranson/Edwards Homestead OSP
Full Size Image
Jog in property line across Coal Creek.
This was an attempt to pass by the old homestead and continue northeast to the northeast corner of the park. I returned to Plainview Road mainly by way of the old ranch road.
  1830  Field identification: Penstemon virens

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

Penstemon virens Pennell ex Rydb.  Front Range Beardtongue.

Kinney Run, Jefferson County, Colorado. Top of small hogback between Kinney Run and Eagle Ridge Drive, 3.01 km. south of the GNIS location of Golden. 39.729N, 105.2142W. WGS 1984 Elev. 1830 m. Sparsely vegetated sandstone among Cercocarpus montanus. Common Front Range Penstemon.

Collected by permit: City of Golden, 2018, issued: Feb 23, 2018, to: Tom Schweich.

Tom Schweich 1830. 16-May-2018


Full Size ImageInflorescence of Coll. No. 1831, Senecio integerrimus  
1831  Field identification: Senecio integerrimus

Plants of Jefferson County Open Space
Jefferson County, Colorado
Asteraceae

Senecio integerrimus Nutt.  Columbia Ragwort.

Ranson/Edwards Homestead Open Space Park, Jefferson County, Colorado. 1.7 miles west on CO Highway 72 from CO Highway 93, then 1.4 miles generally north on Plainview Road, then about 300 m. northwest to the general vicinity of the old homestead, about 15.8 km. north of the GNIS location of Golden. 39.8943N, 105.2602W. WGS 1984 Elev. 1938 m. Moderate north slope, deep grass with Astragalus agrestis.

Collected by permit: Jefferson County Open Space, 2018, issued: Mar 1, 2018, to: Tom Schweich.

Tom Schweich 1831. 17-May-2018


Full Size ImageHabitat of Coll. No. 1832, Eleocharis cf. acicularis
Full Size ImageColl. No. 1832, Eleocharis cf. acicularis
Full Size ImageColl. No. 1832, Eleocharis cf. acicularis  
1832  Field identification: Eleocharis sp.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Cyperaceae

Eleocharis acicularis (L.) Roem. & Schult.  Needle Spikerush.

Ranson/Edwards Homestead Open Space Park, Jefferson County, Colorado. 1.7 miles west on CO Highway 72 from CO Highway 93, then 1.4 miles generally north on Plainview Road, then about 350 m. northwest to the general vicinity of the old homestead, about 15.9 km. north of the GNIS location of Golden. 39.8949N, 105.2603W. WGS 1984 Elev. 1928 m. Stigmas 3, achenes with longitudinal ridges. Small patch less than 1 m. sq., north side of the pond between the well and the homestead. Determination tentative.

Collected by permit: Jefferson County Open Space, 2018, issued: Mar 1, 2018, to: Tom Schweich.

Tom Schweich 1832. 17-May-2018


Full Size ImageHabitat of Coll. No. 1833, Prunus virginiana  
1833  Field identification: Prunus virginiana.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Rosaceae

Prunus virginiana L.  Chokecherry.

Ranson/Edwards Homestead Open Space Park, Jefferson County, Colorado. 1.7 miles west on CO Highway 72 from CO Highway 93, then 1.4 miles generally north on Plainview Road, then about 530 m. northwest past the old homestead, about 15.9 km. north of the GNIS location of Golden. 39.896N, 105.2587W. WGS 1984 Elev. 1923 m. Small area of low (<1m) shrubs in grasses; Ribes aureum nearby in a small pile of rocks.

Collected by permit: Jefferson County Open Space, 2018, issued: Mar 1, 2018, to: Tom Schweich.

Tom Schweich 1833. 17-May-2018


Full Size ImageHabitat of Coll. No. 1834, Ribes aureum.
Full Size ImageColl. No. 1834, Ribes aureum.  
1834  Field identification: Ribes aureum.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Grossulariaceae

Ribes aureum Pursh.  Golden Currant.

Ranson/Edwards Homestead Open Space Park, Jefferson County, Colorado. 1.7 miles west on CO Highway 72 from CO Highway 93, then 1.4 miles generally north on Plainview Road, then about 530 m. northwest past the old homestead, about 15.9 km. north of the GNIS location of Golden. 39.8959N, 105.2586W. WGS 1984 Elev. 1920 m. One shrub in pile of rocks in an otherwise open grassy field. The pile of rocks may be artificial given the proximity of the original homestead.

Collected by permit: Jefferson County Open Space, 2018, issued: Mar 1, 2018, to: Tom Schweich.

Tom Schweich 1834. 17-May-2018


Full Size ImageHabit of Coll. No. 1835, Erysimum capitatum
Full Size ImageColl. No. 1835, Erysimum capitatum  
1835  Field identification: Erysimum capitatum

Plants of Jefferson County Open Space
Jefferson County, Colorado
Brassicaceae

Erysimum capitatum (Hook.) Greene.  Sanddune Wallflower.

Ranson/Edwards Homestead Open Space Park, Jefferson County, Colorado. 1.7 miles west on CO Highway 72 from CO Highway 93, then 1.4 miles generally north on Plainview Road, then about 570 m. northeast past the old homestead, about 15.9 km. north of the GNIS location of Golden. 39.8964N, 105.2586W. WGS 1984 Elev. 1925 m. Along a low ridge that is a little drier and rockier than surrounding grass land; moss growing on bare soil.

Collected by permit: Jefferson County Open Space, 2018, issued: Mar 1, 2018, to: Tom Schweich.

Tom Schweich 1835. 17-May-2018

Coll. No. 1835, 17 May 2018, characters observed: Perennial or at least biennial, terrestrial herb, hairs dolabriform throughout; Root, tap; Stem, erect, leafy, hairs as above; Leaves, basal and cauline, basal, simple, petiole, indistinct, ±10 mm., blade 50 mm. × 2.5 mm. wide, narrowly oblanceolate, 1-3 shallowly pinnate dentate, cauline, nearly sessile, 42 mm. × 2.5 mm. wide, ±linear, marginm entire; Inflorescence, raceme 130 mm. × 45 mm. wide, not bracted; Flowers, radial; Sepals, #4, rows, 1, 7 mm. × 1-1.5 mm. wide, narrow and wide pairs opposite; Petals, claw, 10 mm. + blade 6 mm. × 4 mm. wide, spoon-shaped, margin, entire, color, orange; Stamens, #6, 11 & 15 mm., tetradynamous (2 short, 4 long); Anthers, 4.5 mm.; Ovary, 4 mm.; Style, 9 mm.; Stigma, capitate; Pedicels, 5-6 mm., ascending; Fruit, 17 mm. × 1 mm. wide, ascending, hairy as above.


Full Size ImageColl. No. 1836, Arabis pycnocarpa
Full Size ImageColl. No. 1836, Arabis pycnocarpa var. pycnocarpa  
1836  Field identification: Brassicaceae, but likely Arabis pycnocarpa.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Brassicaceae

Arabis pycnocarpa M. Hopkins.  Cream Flower Rockcress.

Ranson/Edwards Homestead Open Space Park, Jefferson County, Colorado. 1.7 miles west on CO Highway 72 from CO Highway 93, then 1.4 miles generally north on Plainview Road, then about 570 m. northeast past the old homestead, about 15.9 km. north of the GNIS location of Golden. 39.8964N, 105.2586W. WGS 1984 Elev. 1924 m. Perennial, simple hairs, fls. white, fr. silique, basal lvs. present at anthesis. Along a low ridge that is a little drier and rockier than surrounding grass land; moss growing on bare soil. This is apparently the only name that remains in Arabis in Colorado.

Collected by permit: Jefferson County Open Space, 2018, issued: Mar 1, 2018, to: Tom Schweich.

Tom Schweich 1836. 17-May-2018

Coll. No. 1836, 17 May 2018, characters observed: Perennial terrestrial herb, to 25 cm. tall, hairs simple proximally; Roots, tap; Stem, erect, leafy; Leaves, basal and cauline, basal, simple, petiole 12 mm. + blade 10 mm. × 8 mm. wide, margin entire, ciliate, tip obtuse; cauline, sessile, basally lobed, 22 mm × 6 mm. wide, lanceolate, margin 1-3 dentate; Flowers, radial; Sepals, #4, rows, 1, 2 mm. × 1 mm. wide, ovate, green, glabrous; Petals, 3.7 mm. × 0.9 mm. wide, obovate, margin, entire, color, white; Stamens, #6, 3.5 & 3.8 mm.; Anthers, 0.7 mm., ovate; Ovary, 3 mm.; Stigma, capitate; Fruit, pedicels, 6 mm., fruit, 40 mm. × 1 mm. wide, appressed, glabrous.


Full Size ImageFruit of Coll. No. 1837, Lomatium orientale
Full Size ImageInflorescence of Coll. No. 1837, Lomatium orientale
Full Size ImageColl. No. 1837, Lomatium orientale  
1837  Field identification: Lomatium orientale.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Apiaceae

Lomatium orientale J.M. Coult. & Rose.  Northern Idaho Biscuitroot.

Ranson/Edwards Homestead Open Space Park, Jefferson County, Colorado. 1.7 miles west on CO Highway 72 from CO Highway 93, then 1.4 miles generally north on Plainview Road, then about 567 m. northeast past the old homestead, about 15.9 km. north of the GNIS location of Golden. 39.8963N, 105.2585W. WGS 1984 Elev. 1923 m. Along a low ridge that is a little drier and rockier than surrounding grass land; moss growing on bare soil.

Collected by permit: Jefferson County Open Space, 2018, issued: Mar 1, 2018, to: Tom Schweich.

Tom Schweich 1837. 17-May-2018

Coll. No. 1837, 17 May 2018, characters observed: Perennial, to 20 cm., woody taproot; Leaves, compound, pinnate, 75 mm. × 26 mm. wide, ultimate divisions, ≤3 mm., ≤1 mm. wide, villous, tips, obtuse, (with a very small white “spine”); Inflorescence, compound umbel; Involucel Bracts, glabrous; Flowers, white; Anthers, red; Ovary, glabrous, stylopodium, absent; Fruit, 5 mm. × 3.5 mm. wide, ovate, glabrous, dorsally compressed, lateral ribs winged.

  1838  Field identification: Draba, probably D. reptans.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Brassicaceae

Draba reptans (Lam.) Fernald.  Carolina Whitlow Grass.

Ranson/Edwards Homestead Open Space Park, Jefferson County, Colorado. 1.7 miles west on CO Highway 72 from CO Highway 93, then 1.4 miles generally north on Plainview Road, then about 567 m. northeast past the old homestead, about 15.9 km. north of the GNIS location of Golden. 39.8964N, 105.2586W. WGS 1984 Elev. 1922 m. Along a low ridge that is a little drier and rockier than surrounding grass land; moss growing on bare soil.

Collected by permit: Jefferson County Open Space, 2018, issued: Mar 1, 2018, to: Tom Schweich.

Tom Schweich 1838. 17-May-2018


Full Size ImageHabitat of Coll. No. 1839, Boechera fendleri  
1839  Field identification: Boechera fendleri

Plants of Jefferson County Open Space
Jefferson County, Colorado
Brassicaceae

Boechera fendleri (S.Watson) W.A.Weber.  Fendler's rockcress.

Ranson/Edwards Homestead Open Space Park, Jefferson County, Colorado. 1.7 miles west on CO Highway 72 from CO Highway 93, then 1.4 miles generally north on Plainview Road, then about 700 m. northeast past the old homestead, about 15.9 km. north of the GNIS location of Golden. 39.897N, 105.2572W. WGS 1984 Elev. 1918 m. Along a low ridge that is a little drier and rockier than surrounding grass land; moss growing on bare soil.

Collected by permit: Jefferson County Open Space, 2018, issued: Mar 1, 2018, to: Tom Schweich.

Tom Schweich 1839. 17-May-2017


Full Size ImageColl. No. 1840, Frasera speciosa  
1840  Field identification: Frasera speciosa.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Gentianaceae

Frasera speciosa Griseb.  Elkweed.

Ranson/Edwards Homestead Open Space Park, Jefferson County, Colorado. 1.7 miles west on CO Highway 72 from CO Highway 93, then 1.4 miles generally north on Plainview Road, then about 950 m. northeast past the old homestead to the northeast corner of the open space; about 16.3 km. north of the GNIS location of Golden. 39.8992N, 105.256W. WGS 1984 Elev. 1905 m. The larger leaves are basal, while the smaller leaves are cauline. Limited plant parts collected, only one plant in bloom in this foothill prairie location.

Collected by permit: Jefferson County Open Space, 2018, issued: Mar 1, 2018, to: Tom Schweich.

Tom Schweich 1840. 17-May-2018


Full Size ImageInflorescence of Coll. No. 1841, Rumex acetosella
Full Size ImageColl. No. 1841, Rumex acetosella  
1841  Field identification: Rumex acetosella.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Polygonaceae

Rumex acetosella L.  Sorrel.

Ranson/Edwards Homestead Open Space Park, Jefferson County, Colorado. 1.7 miles west on CO Highway 72 from CO Highway 93, then 1.4 miles generally north on Plainview Road, then about 800 m. northeast past the old homestead to the northeast corner of the open space; about 16 km. north of the GNIS location of Golden. 39.897N, 105.2555W. WGS 1984 Elev. 1911 m. Beside an old ranch road near the eastern boundary fence.

Collected by permit: Jefferson County Open Space, 2018, issued: Mar 1, 2018, to: Tom Schweich.

Tom Schweich 1841. 17-May-2018

Coll. No. 1841, 17 May 2018, characters observed: Perennial herb from woody rootstock, to 30 cm., dioecious (all plants in this collection staminate); Leaves, basal and cauline similar, ocrea, 7-10 mm., petiole 20 mm. + blade 12-24 mm. × 6 mm. wide, base hastate, lobes pointing outward, tip acuminate; Pedicels, 1-3 mm.; Flowers, bulbar-like base, described as stipe-like, but does not look stipe-like such as that seen in Eriogonum umbellatum; Pedicels, 1-3 mm.; Tepals, #6, 1.7 mm., reddish.

  1842  Field identification: Juncus interior.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Juncaceae

Juncus interior Wiegand.  Inland Rush.

Ranson/Edwards Homestead Open Space Park, Jefferson County, Colorado. 1.7 miles west on CO Highway 72 from CO Highway 93, then 1.4 miles generally north on Plainview Road, then about 800 m. northeast past the old homestead to the northeast corner of the open space; about 16 km. north of the GNIS location of Golden. 39.897N, 105.2555W. WGS 1984 Elev. 1910 m. Beside an old ranch road near the eastern boundary fence.

Collected by permit: Jefferson County Open Space, 2018, issued: Mar 1, 2018, to: Tom Schweich.

Tom Schweich 1842. 17-May-2018

  1843  Field identification: Plantago, probably P. major.
  1844  Field identification: Ribes cereum.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Grossulariaceae

Ribes cereum Douglas.  Wax Currant.

Ranson/Edwards Homestead Open Space Park, Jefferson County, Colorado. 1.7 miles west on CO Highway 72 from CO Highway 93, then 1.4 miles generally north on Plainview Road, then about 660 m. east northeast; about 15.7 km. north of the GNIS location of Golden. 39.8948N, 105.2555W. WGS 1984 Elev. 1910 m. Along the eastern boundary fence.

Collected by permit: Jefferson County Open Space, 2018, issued: Mar 1, 2018, to: Tom Schweich.

Tom Schweich 1844. 17-May-2018

 

 

Locations: Upper Washington Avenue Open Space.
Full Size ImageCoryphantha missouriensis  

Friday, May 18th

Upper Washington Avenue Open Space

Full Size ImageColl. No. 1845, Sisymbrium altissimim  
1845  Field identification: Descurainia incisa, but a field trip attendee thought Sisymbrium.

Descurainia keys in Ackerfield's (2015) Key 1 (Plants with branched, forked, stellate, or dolabriform hairs), whereas Sisymbrium keys in Key 3 (Plants glabrous or with simple hairs; leaves with a sagittate or auriculate base).

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

Sisymbrium altissimum L.  Tall Tumblemustard.

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, 1.73 km. north northeast of the GNIS location of Golden. 39.7689N, 105.2316W. WGS 1984 Elev. 1791 m. In the formerly mowed area, along the northeast side.

Collected by permit: City of Golden, 2018, issued: Feb 23, 2018, to: Tom Schweich.

Tom Schweich 1845. 18-May-2018

Coll. No. 1845, 18 May 2018, characters observed: Annual terrestrial herb, to 50 mm.; Roots, tap; Stem, erect, branched above, leafy, few simple hairs; Leaves, basal and cauline, basal compound, (petiole short if at all present), 120 mm. × 28 mm. wide, oblong, pinnately divided, few simple hairs on petioles, mid-ribs, and margins; cauline, nearly sessile, lanceolate, very finely pinnately divided; Flowers, radial; Sepals, #4, rows, 1, 3.5-4.5 mm. × 0.8 mm. wide, small hood-shaped appendage at tip; Petals, 7 mm. × 1.5 mm. wide, margin, entire, color, yellow; Stamens, tetradynamous, 3.6, 5.2 mm.; Filaments, plain; Anthers, 2 mm.; Stigma, (weakly) 2-lobed; Fruit, 17 mm. × 0.5 mm. wide, ascending, glabrous.

  1846  Field identification: Thlaspi arvense.

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

Thlaspi arvense L.  Field Penny Cress.

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, 1.73 km. north northeast of the GNIS location of Golden. 39.7689N, 105.2324W. WGS 1984 Elev. 1814 m. Along the north fence.

Collected by permit: City of Golden, 2018, issued: Feb 23, 2018, to: Tom Schweich.

Tom Schweich 1846. 18-May-2018

  1847  Field identification: Senecio integerrimus.

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

Senecio integerrimus Nutt.  Columbia 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, 1.73 km. north northeast of the GNIS location of Golden. 39.7687N, 105.2325W. WGS 1984 Elev. 1813 m. Just a few plants on the eastern slope, in dense smooth brome.

Collected by permit: City of Golden, 2018, issued: Feb 23, 2018, to: Tom Schweich.

Tom Schweich 1847. 18-May-2018

  1848  Field identification: Astragalus agrestis

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

Astragalus agrestis Douglas ex G. Don.  Purple 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, 1.73 km. north northeast of the GNIS location of Golden. 39.7687N, 105.2325W. WGS 1984 Elev. 1815 m. Just a few plants on the eastern slope, in dense smooth brome.

Collected by permit: City of Golden, 2018, issued: Feb 23, 2018, to: Tom Schweich.

Tom Schweich 1848. 18-May-2018

  1849  Field identification: Astragalus agrestis

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

Astragalus agrestis Douglas ex G. Don.  Purple 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, 1.73 km. north northeast of the GNIS location of Golden. 39.7686N, 105.2325W. WGS 1984 Elev. 1814 m. Upper eastern slope, above the thickest infestation of smooth brome, near social trail.

Collected by permit: City of Golden, 2018, issued: Feb 23, 2018, to: Tom Schweich.

Tom Schweich 1849. 18-May-2018

Literature Cited:
- Barkworth, Mary E., Laurel K. Anderton, Kathleen M. Capels, Sandy Long, and Michael B. Piep, 2007.  

1850  Field identification: grass, fine light-green ring forming perennial bunch grass.

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

Festuca saximontana Rydb.  Rocky Mountain Fescue.

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, 1.74 km. north northeast of the GNIS location of Golden. 39.7685N, 105.2325W. WGS 1984 Elev. 1817 m. Fine light-green perennial bunch grass beside trail, just east of crest of hill. Not really native to Golden; probably a grass used in revegetation project.

Collected by permit: City of Golden, 2018, issued: Feb 23, 2018, to: Tom Schweich.

Tom Schweich 1850. 18-May-2018


Full Size ImageColl. No. 1851, Astragalus crassicarpus  
1851  Field identification: Astragalus sp., not currently on my list.

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

Astragalus crassicarpus Nutt.  Groundplum Milkvetch.

Upper Washington Avenue Open Space, Jefferson County, Colorado. Top of hill, beside social trail. 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. 1821 m. Only one plant found in this parcel, so far.

Collected by permit: City of Golden, 2018, issued: Feb 23, 2018, to: Tom Schweich.

Tom Schweich 1851. 18-May-2018

Coll. No. 1851, 18 May 2018, characters observed: Perennial herb, to 15 cm., Leaves, compound, stipules free, petiole, 15 mm., blade, 85 mm. × 22 mm. wide, leaflets, #23, 11 mm. × 3.5 mm. wide, terminal leaflet, not a tendril, hairs, simple, appressed, straight, Calyx, tube 8 mm. + lobes 3 mm., hairs, simple, some light and some dark, Flower, zygomorphic, white to blue, banner, 24 mm., glabrous, wings, claw, 10 mm., blade, 10 mm., keel, 20 mm., tip, obtuse; Style, persistent, 8 mm.; Fruit, 17 mm. × 7.3 mm. wide, oblong, glabrous.


Full Size ImageColl. No. 1852, Vulpia octoflora
Full Size ImageColl. No. 1852, A little annual Vulpia octoflora  
1852  Field identification: grass. Very small, annual, not Buffalo grass.

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

Vulpia octoflora (Walt.) Rydb.  Six Weeks Fescue.

Upper Washington Avenue Open Space, Jefferson County, Colorado. Top of hill, beside social trail. 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, 105.2328W. WGS 1984 Elev. 1819 m. Very small grass.

Collected by permit: City of Golden, 2018, issued: Feb 23, 2018, to: Tom Schweich.

Tom Schweich 1852. 18-May-2018

Coll. No. 1852, 18 May 2018, characters observed: Annual, 5-6 cm., tufted; Roots, fibrous; Sheath, 6 mm., open, minutely hairy; Ligule, membraneous, very short; Blade, 4.5 mm. × 0.3 mm. wide, rolled, glabrous; Inflorescence, 1 per culm, >leaves, raceme, 16 mm. × 5 mm. wide; Spikelets, #6, 6-7 mm., similar, 1 / node, many flowered; Compression, lateral; Disarticulation, between florets; Glumes, lower, 2 mm., vein, #1, upper, 3 mm., veins, #3, keeled, awns, #0; Florets, #5-6 per spikelets; Axis, short hairy abaxially; Lemma, 3.2 mm, >glumes, lanceolate, green, rolled, hairs, 0.2 mm., white/straw color, veins, #3, glabrous, tip entire, awns, #1, 1.8 mm., straight, attached to end; Palea, 2.7 mm., <lemma, membraneous, margin ciliate; keeled.

Literature Cited:
- Barkworth, Mary E., Laurel K. Anderton, Kathleen M. Capels, Sandy Long, and Michael B. Piep, 2007.  

1853  Field identification: grass. Revegetation bunch grass.

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

Festuca saximontana Rydb.  Rocky Mountain Fescue.

Upper Washington Avenue Open Space, Jefferson County, Colorado. Top of hill, beside social trail. 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, 105.2337W. WGS 1984 Elev. 1817 m. Revegetation bunch grass.

Collected by permit: City of Golden, 2018, issued: Feb 23, 2018, to: Tom Schweich.

Tom Schweich 1853. 18-May-2018

Coll. No. 1853, 18 May 2018, characters observed: Perennial grass, to 60 cm., tufted; Leaves, mostly basal, cauline leaves on flowering culms; Sheath, 75 mm., open, minutely scabrous; Blade, 70 mm. × 1 mm. wide, rolled, minutely scabrous; Inflorescence, 1 per culm, >leaves, panicle, 115 mm. × 8 mm. wide, 2-3 branches, 2.5 mm.; Rachis, finely scabrous; Spikelets, many, similar, 9 mm. × 2 mm. wide, 1 per node; Compression, unremarkable; Disarticulation, unknown; Glumes, lower, 3 mm., veins, #1, upper, 4 mm., veins, #3, awns, #0, margins, entire; Florets, 4(5) per spikelet; Axis, few short hairs; Lemma, 4.5 mm., >glumes, lanceolate, membraneous, veins, #5, parallel, margin, chartaceous, tip, entire, acute, awns, #1, 2.5 mm., straight, attached, end (remove palea before making this determination), Palea, 4 mm., <lemma, membraneous, glabrous, tip, 2-forked; Anthers, 1.5 mm.

Placed in F. saximontana per the short anthers. This is one of several collections from Upper Washington Avenue Open Space that will key out as either F. idahoensis or F. saximontana, neither of which are really native to Golden. This was likely planted as part of a revegetation project. In fact, one voucher of this collection will contain remnants of the plastic netting commonly used in such projects.

  1854  Field identification: Poa sp., probably P. pratensis

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

Poa pratensis L.  Kentucky Bluegrass.

Upper Washington Avenue Open Space, Jefferson County, Colorado. Top of hill, beside social trail. 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, 105.233W. WGS 1984 Elev. 1817 m.

Collected by permit: City of Golden, 2018, issued: Feb 23, 2018, to: Tom Schweich.

Tom Schweich 1854. 18-May-2018

Coll. No. 1854, 18 May 2018, characters observed: Perennial, to 60 cm., 1 of 3 plants collected has a rhizome; Roots, fibrous; Stem, herbaceous; Internodes, hollow; Sheath, 90 mm., open; Ligule, membraneous; Blade, 45 mm. × 2.5 mm. wide, flat, scabrous; Inflorescence, 1 per culm, >leaves, panicle, 85 mm. × 10 mm. wide, 4 branches per node; Spikelets, many, similar, 1 per node, 4 mm. × 1.2 mm. wide; Compression, lateral; Glumes, lower, 2 mm., veins, #1, upper, 2.7 mm., veins, #3, awns, #0; Florets, 2 per spikelet; Callus, hairs, ½ length of lemma, cobwebby; Lemma, 2.5 mm., >glumes, ovate, membraneous, keeled, hairy, veins, #3, tip, entire, awns, #0; Palea, 2 mm., green on veins, glabrous; Anthers, 1.2 mm.


Full Size ImageColl. No. 1855, Poa secunda ssp. secunda  
1855  Field identification: Koeleria macrantha, determination tentative. — Yikes!!

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

Poa secunda J. Presl ssp. secunda.  Sandberg Bluegrass..

Upper Washington Avenue Open Space, Jefferson County, Colorado. Top of hill, near social trail. 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.

Collected by permit: City of Golden, 2018, issued: Feb 23, 2018, to: Tom Schweich.

Tom Schweich 1855. 18-May-2018

Coll. No. 1855, 18 May 2018, characters observed: Perennial, to 50 cm., not rhizomatous; Internodes, hollow, glabrous; Sheath, 60 mm., open; Ligule, membranous, 4 mm., auricles, 0.2-0.3 mm.; Blade, 20-37 mm. × 2 mm. to 1 mm. wide, flat, tip folded and fused (prow-shaped), mid-rib and margins sparsely scabrous; Inflorescence, 1 per culm, >leaves, panicle, 80 mm. × 11 mm. wide, 1-5  branches, 3-7 mm., spikelets, many; Rachis, sparsely scabrous, nodes yellowish; Spikelets, many, similar, 1 per node, 5-6.2 mm. × 1.5-2 mm. wide, 2-many flowered; Compression, unremarkable; Glumes, lower, 2.5 mm., veins, #3, upper, 3.2 mm., veins, #3, awns, #0; Florets, 3 per spikelet, fertile; Axis, sparsely hairy; Lemma, 3.5 mm., ±=glumes, lanceolate, membranous, rounded proximal ½ to weakly keeled above, wavy hairy (to 0.5 mm.) proximally, not cobwebby, color, green, veins, #5, ±parallel, tip, entire, obtuse, awns, #0; Palea, 3.2 mm., ±lemma, membranous, glabrous, greenish at base and margins, Anthers, 1.3 mm.

  1856  Field identification: Agropyron cristatum.

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

Agropyron cristatum (L.) Gaertn.  Crested Wheat Grass.

Upper Washington Avenue Open Space, Jefferson County, Colorado. Top of hill, near social trail. 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.

Collected by permit: City of Golden, 2018, issued: Feb 23, 2018, to: Tom Schweich.

Tom Schweich 1856. 18-May-2018

 

 

Locations: Tin Cup Ridge.
Full Size ImageCoryphantha missouriensis at Tin Cup Ridge.
Full Size ImageThe new boxes on the Bachman Ranch stand out.  

Wednesday, May 23rd

Tin Cup Ridge.
 

Full Size ImageColl. No. 1857, Vicia americana var. minor  
1857  Field identification: Vicia americana.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Fabaceae

Vicia americana Willd. var. minor Hook.  American Vetch.

Tin Cup Ridge, Jefferson County, Colorado. Lowest east slopes of Tin Cup Ridge, the northward extension of Dinosaur Ridge into Golden, 4.73 km. south southeast of the GNIS location of Golden. 39.7148N, 105.2047W. WGS 1984 Elev. 1858 m. Tendrils variously forked and not, racemes 3-4 flowered.

Collected by permit: Jefferson County Open Space, 2018, issued: Mar 1, 2018, to: Tom Schweich.

Tom Schweich 1857. 23-May-2018

Coll. No. 1857, 23 May 2018, characters observed: Perennial herb, to 30 cm., sprawling; Stem, not winged, hairs, simple, basifixed; Leaves, compound, stipules, free, 7 mm. × 3.5 mm. wide, leaflets, #10, 22 mm. × 3.7 mm. wide, oblong, terminal leaflet, a tendril, variously forked or not, hairs, simple, basifixed; Inflorescence, raceme, 3-4 flowers, pedicels 22-28 mm.; Calyx, tube 4-5 mm. + lobes 2 mm., longer abaxially, simple basifixed hairs; Flower, zygomorphic, banner, 18 mm., reflexed at middle, back glabrous, blade, 17 mm., keel, 13 mm., tip obtuse; Stigma, round, ring of hairs below stigma.


Full Size ImageButton-like caudex of Coll. No. 1858, Senecio integerrimus  
1858  Field identification: Senecio integerrimus.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Asteraceae

Senecio integerrimus Nutt.  Columbia Ragwort.

Tin Cup Ridge, Jefferson County, Colorado. Lower east slopes of Tin Cup Ridge, the northward extension of Dinosaur Ridge into Golden, 4.77 km. south southeast of the GNIS location of Golden. Open grassland. 39.7144N, 105.2048W. WGS 1984 Elev. 1889 m.

Collected by permit: Jefferson County Open Space, 2018, issued: Mar 1, 2018, to: Tom Schweich.

Tom Schweich 1858. 23-May-2018

  1859  Field identification: Cerastium arvense

Plants of Jefferson County Open Space
Jefferson County, Colorado
Caryophyllaceae

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

Tin Cup Ridge, Jefferson County, Colorado. Lower east slopes of Tin Cup Ridge, the northward extension of Dinosaur Ridge into Golden, 4.80 km. south southeast of the GNIS location of Golden. 39.7142N, 105.2046W. WGS 1984 Elev. 1892 m. Among grasses on the edge of the brush.

Collected by permit: Jefferson County Open Space, 2018, issued: Mar 1, 2018, to: Tom Schweich.

Tom Schweich 1859. 24-May-2018

  1860  Field identification: Bromus tectorum

Plants of Jefferson County Open Space
Jefferson County, Colorado
Poaceae

Bromus tectorum L.  Cheat Grass.

Tin Cup Ridge, Jefferson County, Colorado. Lower east slopes of Tin Cup Ridge, the northward extension of Dinosaur Ridge into Golden, 4.80 km. south southeast of the GNIS location of Golden. 39.7141N, 105.2045W. WGS 1984 Elev. 1891 m. Grasses in an opening in the brush.

Collected by permit: Jefferson County Open Space, 2018, issued: Mar 1, 2018, to: Tom Schweich.

Tom Schweich 1860. 23-May-2018

  1861  Field identification: Rhus aromatica trilobata.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Anacardiaceae

Rhus trilobata Nutt. var. trilobata.  Skunkbush Sumac.

Tin Cup Ridge, Jefferson County, Colorado. Lower east slopes of Tin Cup Ridge, the northward extension of Dinosaur Ridge into Golden, 4.80 km. south southeast of the GNIS location of Golden. 39.7141N, 105.2045W. WGS 1984 Elev. 1892 m.

Collected by permit: Jefferson County Open Space, 2018, issued: Mar 1, 2018, to: Tom Schweich.

Tom Schweich 1861. 23-May-2018

  1862  Field identification: Lithospermum incisum

Plants of Jefferson County Open Space
Jefferson County, Colorado
Boraginaceae

Lithospermum incisum Lehm.  Narrowleaf Stoneseed.

Tin Cup Ridge, Jefferson County, Colorado. Lower east slopes of Tin Cup Ridge, the northward extension of Dinosaur Ridge into Golden, 4.83 km. south southeast of the GNIS location of Golden. 39.714N, 105.2046W. WGS 1984 Elev. 1894 m.

Collected by permit: Jefferson County Open Space, 2018, issued: Mar 1, 2018, to: Tom Schweich.

Tom Schweich 1862. 23-May-2018

  1863  Field identification: Tragopogon dubius

Plants of Jefferson County Open Space
Jefferson County, Colorado
Asteraceae

Tragopogon dubius Scop.  Yellow Salsify.

Tin Cup Ridge, Jefferson County, Colorado. Lower east slopes of Tin Cup Ridge, the northward extension of Dinosaur Ridge into Golden, 4.83 km. south southeast of the GNIS location of Golden. 39.714N, 105.2046W. WGS 1984 Elev. 1897 m. In grasses amid shrubs.

Collected by permit: Jefferson County Open Space, 2018, issued: Mar 1, 2018, to: Tom Schweich.

Tom Schweich 1863. 23-May-2018

  1864  Field identification: Asparagus officinale

Plants of Jefferson County Open Space
Jefferson County, Colorado
Asparagaceae

Asparagus officinalis L.  Asparagus.

Tin Cup Ridge, Jefferson County, Colorado. Lower east slopes of Tin Cup Ridge, the northward extension of Dinosaur Ridge into Golden, 4.83 km. south southeast of the GNIS location of Golden. 39.714N, 105.2047W. WGS 1984 Elev. 1899 m. In mixed shrubs and grasses.

Collected by permit: Jefferson County Open Space, 2018, issued: Mar 1, 2018, to: Tom Schweich.

Tom Schweich 1864. 23-May-2018


Full Size ImageColl. No. 1865, Castilleja integra  
1865  Field identification: Castilleja integra.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Orobanchaceae

Castilleja integra A. Gray.  Wholeleaf Indian Paintbrush.

Tin Cup Ridge, Jefferson County, Colorado. Lower east slopes of Tin Cup Ridge, the northward extension of Dinosaur Ridge into Golden, 4.83 km. south southeast of the GNIS location of Golden. 39.714N, 105.2047W. WGS 1984 Elev. 1899 m. In mixed grasses and shrubs.

Collected by permit: Jefferson County Open Space, 2018, issued: Mar 1, 2018, to: Tom Schweich.

Tom Schweich 1865. 23-May-2018


Full Size ImageColl. No. 1866, Oenothera suffrutescens  
1866  Field identification: Oenothera suffrutescens.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Onagraceae

Oenothera suffrutescens (Ser.) W. L. Wagner & Hoch.  Linda Tarde.

Tin Cup Ridge, Jefferson County, Colorado. Lower east slopes of Tin Cup Ridge, the northward extension of Dinosaur Ridge into Golden, 4.83 km. south southeast of the GNIS location of Golden. 39.7141N, 105.2047W. WGS 1984 Elev. 1893 m. North side of small watercourse, among shrubs and some open grassland.

Collected by permit: Jefferson County Open Space, 2018, issued: Mar 1, 2018, to: Tom Schweich.

Tom Schweich 1866. 23-May-2018

  1867  Field identification: Ribes cereum.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Grossulariaceae

Ribes cereum Douglas.  Wax Currant.

Tin Cup Ridge, Jefferson County, Colorado. Middle east slopes of Tin Cup Ridge, the northward extension of Dinosaur Ridge into Golden, 4.83 km. south southeast of the GNIS location of Golden. 39.714N, 105.2048W. WGS 1984 Elev. 1893 m. In shrubs above the grassland.

Collected by permit: Jefferson County Open Space, 2018, issued: Mar 1, 2018, to: Tom Schweich.

Tom Schweich 1867. 23-May-2018

  1868  Field identification: Prunus virginiana.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Rosaceae

Prunus virginiana L.  Chokecherry.

Tin Cup Ridge, Jefferson County, Colorado. Middle east slopes of Tin Cup Ridge, the northward extension of Dinosaur Ridge into Golden, 4.83 km. south southeast of the GNIS location of Golden. 39.714N, 105.2048W. WGS 1984 Elev. 1893 m. Base of steepest slopes.

Collected by permit: Jefferson County Open Space, 2018, issued: Mar 1, 2018, to: Tom Schweich.

Tom Schweich 1868. 23-May-2018


Full Size ImageLight-colored variant of Ericameria nauseosa  
Light-colored variant of Ericameria nauseosa
  1869  Field identification: Lappula redowski.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Boraginaceae

Lappula occidentalis (S. Watson) Greene var. cupulata (A. Gray) Higgins. (Syn: Lappula redowskii (Hornem.) Greene var. cupulata (A. Gray) M. E. Jones) fide Ackerfield (2015).  Crowned Stickseed.

Tin Cup Ridge, Jefferson County, Colorado. Middle east slopes of Tin Cup Ridge, the northward extension of Dinosaur Ridge into Golden, 4.65 km. south southeast of the GNIS location of Golden. 39.7153N, 105.2061W. WGS 1984 Elev. 1898 m. On the bank of a ditch cut on contour of the slope.

Collected by permit: Jefferson County Open Space, 2018, issued: Mar 1, 2018, to: Tom Schweich.

Tom Schweich 1869. 23-May-2018

  1870  Field identification: Cynoglossum officinale.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Boraginaceae

Cynoglossum officinale L.  Gypsyflower.

Tin Cup Ridge, Jefferson County, Colorado. Near the top of Tin Cup Ridge, the northward extension of Dinosaur Ridge into Golden,4.57 km. south southeast of the GNIS location of Golden. 39.7159N, 105.2065W. WGS 1984 Elev. 1904 m. Among trees and shrubs. Colorado Noxious Weed List B.

Collected by permit: Jefferson County Open Space, 2018, issued: Mar 1, 2018, to: Tom Schweich.

Tom Schweich 1870. 23-May-2018

  1871  Field identification: Arnica fulgens

Plants of Jefferson County Open Space
Jefferson County, Colorado
Asteraceae

Arnica fulgens Pursh.  Foothill Arnica.

Tin Cup Ridge, Jefferson County, Colorado. Near the top of Tin Cup Ridge, the northward extension of Dinosaur Ridge into Golden,4.57 km. south southeast of the GNIS location of Golden. 39.716N, 105.2065W. WGS 1984 Elev. 1903 m. Amid trees and shrubs, east exposure.

Collected by permit: Jefferson County Open Space, 2018, issued: Mar 1, 2018, to: Tom Schweich.

Tom Schweich 1871. 23-May-2018


Full Size ImageColl. No. 1872, Arabis pycnocarpa  
1872  Field identification: Arabis pycnocarpa.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Brassicaceae

Arabis pycnocarpa M. Hopkins.  Cream Flower Rockcress.

Tin Cup Ridge, Jefferson County, Colorado. Near the top of Tin Cup Ridge, the northward extension of Dinosaur Ridge into Golden,4.57 km. south southeast of the GNIS location of Golden. 39.7159N, 105.2066W. WGS 1984 Elev. 1904 m. In open areas among brush and trees.

Collected by permit: Jefferson County Open Space, 2018, issued: Mar 1, 2018, to: Tom Schweich.

Tom Schweich 1872. 23-May-2018

Coll. No. 1872, 23 May 2018, characters observed: Annual or short-lived Perennial, terrestrial herb, to 60 cm. tall; Stem, erect, leafy, proximal hairs simple, distal glabrous; Leaves, basal and cauline, basal, simple, petiole, 10 mm., indistinct, blade 45 mm. × 10 mm. wide, oblanceolate, pinnately toothed, hairs, forked, not dolabriform, cauline, sessile, basally lobed, lanceolate, proximal leaves have a mix of simple and forked hairs, mid- to distal-leaves are glabrous, margin, entire; Inflorescence, raceme, 65 mm. × 15 mm. wide, not bracted, not secund; Flowers, radial; Pedicels, 3 mm.; Sepals, #4, rows 1, 4.2 mm. × 1.2 mm. wide, lanceolate, chartaceous, glabrous; Petals, 5 mm. × 1 mm. wide, somewhat spoon-shaped, margin entire, color, white to cream; Stamens, #6, 5.2 mm.; Filaments, plain; Anthers, 1 mm., exserted; Ovary, 5 mm. × 0.7 mm. wide; Stigma, capitate, 0.6 mm. wide, ±= width of ovary base (Welsh, 1993); Fruit, pedicels, 6 mm., ascending, nearly appressed, glabrous; mature, 12-16 mm. × 0.8 mm. wide, ascending, nearly appressed, not inflated, glabrous.


Full Size ImageColl. No. 1873, Cryptantha virgata  
1873  Field identification: Cryptantha virgata.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Boraginaceae

Cryptantha virgata (Porter) Payson.  Miner"s Candle.

Tin Cup Ridge, Jefferson County, Colorado. Near the top of Tin Cup Ridge, the northward extension of Dinosaur Ridge into Golden,4.50 km. south southeast of the GNIS location of Golden. 39.7165N, 105.2067W. WGS 1984 Elev. 1895 m. Five plants, several old flower stalks. In a collapsed mined out vein.

Collected by permit: Jefferson County Open Space, 2018, issued: Mar 1, 2018, to: Tom Schweich.

Tom Schweich 1873. 23-May-2018

Other articles: Tin Cup Ridge (social trail) on trail
Full Size ImageCamping supplies stashed on Tin Cup Ridge.  

Cache of camping supplies on Tin Cup Ridge.

Other articles: Golden Checklist Flora Lepidium draba
Full Size ImageColl. No. 1874, Lepidium draba
Full Size ImageFruit of Coll. No. 1874, Lepidium draba  

1874  Field identification: Lepidium draba.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Brassicaceae

Lepidium draba L.  White Top.

Tin Cup Ridge, Jefferson County, Colorado. Lowest slopes of Tin Cup Ridge, the northward extension of Dinosaur Ridge into Golden, 4.5 km. south southeast of the GNIS location of Golden. 39.7149N, 105.2046W. WGS 1984 Elev. 1884 m. At the edge of the parking lot. Colorado Noxious Weed List B

Collected by permit: Jefferson County Open Space, 2018, issued: Mar 1, 2018, to: Tom Schweich.

Tom Schweich 1874. 23-May-2018

 

 

Other articles: North Table Loop at new const.

Locations: North Table Mountain Park.
Full Size ImageRebuilt trail on North Table Loop.  

Thursday, May 24th

North Table Mountain Park, trailhead poarking lot to Ramstetter Reservoir and back.
 

Full Size ImageColl. No. 1875, Vicia villosa  
1875  Field identification: Fabaceae; best guess back in the office: Vicia villosa.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Fabaceae

Vicia villosa Roth.  Hairy Vetch.

North Table Mountain Park, Jefferson County, Colorado. Smooth brome-infested grasslands on the lower northwest slope of North Table Mountain, just off North Table Loop in the direction of Ramstetter Reservoir, 3.67 km. north of the GNIS location of Golden. 39.7883N, 105.2263W. WGS 1984 Elev. 1805 m. Lax, twining on smooth brome.

Collected by permit: Jefferson County Open Space, 2018, issued: Mar 1, 2018, to: Tom Schweich.

Tom Schweich 1875. 24-May-2018

Coll. No. 1875, 24 May 2018, characters observed: Perennial, herb, sprawling through the smooth brome, to 50 cm.; Leaves, compound, stipules, 13 mm. × 3 mm. wide, 2-lobed, petiole, 0, blade, 75 mm. × 28 mm. wide, leaflets, #13-15, 20 mm. × 4 mm. wide, linear-elliptic, terminal leaflet a tendril, forked, #3-4, hairs, straight; Inflorescence, raceme, secund, flowers, #±20; Calyx, tube 3 mm. + lobes 4 mm., narrow, hairs simple; Flower, zygomorphic, white to dark blue, banner, 16 mm., reflexed ¾, wings, 14 mm., clawed, dark blue, keel, 11 mm., tip obtuse; Style, ring of hairs below stigma, 0.6 mm.; Fruit, (immature) 5 mm. × 0.8 mm wide, lanceolate, glabrous.


Full Size ImageColl. No. 1876, Camelina microcarpa  
1876  Field identification: Camelina microcarpa

Plants of Jefferson County Open Space
Jefferson County, Colorado
Brassicaceae

Camelina microcarpa Andrz. ex DC.  Little-Podded False Flax.

North Table Mountain Park, Jefferson County, Colorado. Smooth brome-infested grasslands on the lower northwest slope of North Table Mountain, just off North Table Loop in the direction of Ramstetter Reservoir, 3.7 km. north of the GNIS location of Golden. 39.7885N, 105.2268W. WGS 1984 Elev. 1825 m.

Collected by permit: Jefferson County Open Space, 2018, issued: Mar 1, 2018, to: Tom Schweich.

Tom Schweich 1876. 24-May-2018

Coll. No. 1876, characters observed: Annual, terrestrial, herb, to 80 cm. tall; Stem, erect, mostly single, some branched mid-stem; Leaves, basal, absent or withered, cauline, #20-25, sessile, basally lobed, 62 mm. × 10 mm. wide, reduced above, lanceolate, hairs simple and forked; Inflorescence, to 200 mm. × 35 mm. wide, not bracted, not one-sided; Flowers, radial; Pedicels, 8 mm.; Sepals, #4, 2.4 mm. × 0.8 mm. wide, ovate, color, green, tip purplish, abaxially hairy; Petals, 4.0 mm. × 0.7 mm. wide, oblong-spatulate, margin, entire, color, yellow; Stamens, #6, 3 mm.; Filaments, plain or maybe very narrowly winged; Anthers, 0.7 mm., ovate; Ovary, 1.8 mm. × 0.9 mm. wide; Style, 0.8 mm.; Stigma, capitate, 0.4 mm. wide; Fruit, pedicels, 15 mm., 3× than fruit, spreading, mature fruit, 5 mm. × 3.2 mm. wide, somewhat flattened, parallel to replum, coriaceous, short-winged, valve mid-vein apparent but not prominent; Seeds, many, 1.0 mm. × 0.7 mm. wide, angled, papillate.

  1877  Field identification: Androsace occidentalis.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Primulaceae

Androsace occidentalis Pursh.  Western Rockjasmine.

North Table Mountain Park, Jefferson County, Colorado. Smooth brome-infested grasslands on the lower northwest slope of North Table Mountain, just off North Table Loop in the direction of Ramstetter Reservoir, 3.7 km. north of the GNIS location of Golden. 39.7885N, 105.2268W. WGS 1984 Elev. 1825 m. Lowest northwest slope of North Table Mountain; small colony in Bromus inermis, Camelina microcarpa, Alyssum simplex, Linaria dalmatica, and Tragopogon dubius; only native here. Accidently discovered when pulling Coll. No. 1876, Camelina microcarpa out of the ground.

Collected by permit: Jefferson County Open Space, 2018, issued: Mar 1, 2018, to: Tom Schweich.

Tom Schweich 1877. 24-May-2017

  1878  Field identification: Astragalus, probably A. flexuousus.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Fabaceae

Astragalus flexuosus G. Don.  Flexible Milkvetch.

North Table Mountain Park, Jefferson County, Colorado. Smooth brome-infested grasslands on the lower northwest slope of North Table Mountain, north from North Table Loop in the direction of Ramstetter Reservoir, 3.76 km. north of the GNIS location of Golden. 39.7891N, 105.2269W. WGS 1984 Elev. 1820 m. One crown with stems emerging from an area 15 cm. diameter, small magenta flowers.

Collected by permit: Jefferson County Open Space, 2018, issued: Mar 1, 2018, to: Tom Schweich.

Tom Schweich 1878. 24-May-2018

Coll. No. 1878, 24 May 2018, characters observed: Perennial herb, sprawling, to 30 cm., appressed basifixed straight white hairs throughout, plus black hairs in the inflorescence; Leaves, compound, stipules, 4 mm., triangular, entire, free (except possibly slightly connate on side opposite to petiole), petioles, 6 mm., blade, 45 mm. × 14 mm. wide, leaflets, #19, 7 mm. × 2.3 mm. wide, terminal leaflet present, Inflorescence, raceme; Calyx, tube 3 mm. + lobes 0.7 mm.; Flower, zygomorphic, banner, 9 mm., reflexed middle, back glabrous, wings, 8 mm., keel, 6 mm., tip obtuse, Fruit, legume, 7.5 mm. × 1.2 mm. wide, linear-lanceolate.

  1879  Field identification: Erigeron, probably E. tracyi.

Quite tall, and some buds are nodding.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Asteraceae

Erigeron divergens Torr. & A. Gray.  Spreading Fleabane.

North Table Mountain Park, Jefferson County, Colorado. Smooth brome-infested grasslands on the lower northwest slope of North Table Mountain, north from North Table Loop in the direction of Ramstetter Reservoir, 3.76 km. north of the GNIS location of Golden. 39.79N, 105.227W. WGS 1984 Elev. 1816 m.

Collected by permit: Jefferson County Open Space, 2018, issued: Mar 1, 2018, to: Tom Schweich.

Tom Schweich 1879. 23-May-2018

Locations: Ramstetter Creek. Ramstetter Reservoir.
Full Size ImageRamstetter Reservoir seen from the dam.
Full Size ImageNorth Table Mountain from the dam of Ramstetter Reservoir.  

Ramstetter Reservoir

Full Size ImagePistillate catkin of Coll. No. 1880, Salix exigua
Full Size ImageStaminate catkin of Coll. No. 1880, Salix exigua  
1880  Field identification: Salix, probably S. exigua.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Salicaceae

Salix exigua Nutt.  Coyote Willow, Narrow-Leaved Willow.

Ramstetter Reservoir, Jefferson County, Colorado. Southeast shore of Ramstetter Reservoir, northwest corner of North Table Mountain Park, 4.03 km. north of the GNIS location of Golden. 39.7914N, 105.2282W. WGS 1984 Elev. 1809 m. Nearly all plants staminate.

Collected by permit: Jefferson County Open Space, 2018, issued: Mar 1, 2018, to: Tom Schweich.

Tom Schweich 1880. 24-May-2018

Coll. No. 1880, 24 May 2018, characters observed: Perennial erect shrub, to 2 m.; Leaves, alternate, 21 mm. ×. 1.8 mm. wide, 11.7 ×long as wide, abaxial villous, adaxial mostly glabrous, margins entire, slightly revolute; Staminate catkins, 30 mm. × 6 mm. wide; Pistillate catkins, 42 mm. × 4 mm. wide, floral bract, 1.8 mm., capsule, 2.6 mm., glabrous.

Literature Cited:
- Wingate, Janet L., 2017.
Full Size ImageHabitat of Coll. No. 1881, Carex praegracilis  

1881  Field identification: Carex sp.

Plants of Jefferson County Open Space
Jefferson County, Colorado
Cyperaceae

Carex praegracilis W. Boott.  Clustered Field-Sedge.

Ramstetter Reservoir, Jefferson County, Colorado. Southeast shore of Ramstetter Reservoir, northwest corner of North Table Mountain Park, 4.03 km. north of the GNIS location of Golden. 39.7911N, 105.2289W. WGS 1984 Elev. 1810 m.

Collected by permit: Jefferson County Open Space, 2018, issued: Mar 1, 2018, to: Tom Schweich.

Tom Schweich 1881. 24-May-2018

Coll. No. 1881, 24 May 2018, characters observed: Perennial, to 40 cm., from rhizomes; Rhizomes and culm bases ±black; Culm, ridges scabrous; Leaves, mostly basal or near basal, sheath, front hyaline without veins, ligule, 2 mm., blade, flat; Spikes, > 6 per culm, differentiated, androgynous; Bract, 9 mm., margin chartaceous proximal ⅔; Scales, ±clasping perigynia; Perigynia, 2.5-2.7 mm., beak 1.7 mm.

This was the first collection I keyed out using Wingate, J. L., 2017. Sedges of Colorado. I like the key therein, as the detailed descriptions.

  South of Ramstetter Reservoir.

Full Size ImageColl. No. 1882, Plantago patagonica  
1882  Field identification: Plantago patagonica

Plants of Jefferson County Open Space
Jefferson County, Colorado
Plantaginaceae

Plantago patagonica Jacq.  Woolly Plantain.

North Table Mountain Park, Jefferson County, Colorado. Lowest west slopes of North Table Mountain, between CO Highway 93 and North Table Loop, 3.53 km. north of the GNIS location of Golden. 39.7867N, 105.2292W. WGS 1984 Elev. 1822 m. Small, dry gravelly bar between two small watercourses.

Collected by permit: Jefferson County Open Space, 2018, issued: Mar 1, 2018, to: Tom Schweich.

Tom Schweich 1882. 24-May-2018


Full Size ImageSphaeralcea on the lowest slopes of North Table Mountain.  
Sphaeralcea coccinea

 

 

Locations: Colorado School of Mines Survey Field.
Full Size ImagePoison Ivy in the Survey Field.  

Monday, May 28th

Colorado School of Mines Survey Field.
  1883  Field identification: Camelina microcarpa.

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

Camelina microcarpa Andrz. ex DC.  Little-Podded False Flax.

Colorado School of Mines Survey Field, Jefferson County, Colorado. Southern part of Survey field, about half-way down northwest-facing bank of an unnamed watercourse, 2.49 km. south of the GNIS location of Golden. 39.7331N, 105.2201W. WGS 1984 Elev. 1801 m.

Collected by permit: Colorado School of Mines, 2018, issued: Apr 1, 2018, to: Tom Schweich.

Tom Schweich 1883. 28-May-2018

  1884  Field identification: Vicia americana.

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

Vicia americana Willd.  American Vetch.

Colorado School of Mines Survey Field, Jefferson County, Colorado. Southern part of Survey field, bottom of northwest-facing bank of an unnamed watercourse, 2.47 km. south of the GNIS location of Golden. 39.7333N, 105.2203W. WGS 1984 Elev. 1811 m. Variety minor if infraspecific names are to be applied.

Collected by permit: Colorado School of Mines, 2018, issued: Apr 1, 2018, to: Tom Schweich.

Tom Schweich 1884. 28-May-2018

  1885  Field identification: Tragopogon dubius

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

Tragopogon dubius Scop.  Yellow Salsify.

Colorado School of Mines Survey Field, Jefferson County, Colorado. Southern part of Survey field, base of northwest-facing bank of an unnamed watercourse, 2.47 km. south of the GNIS location of Golden. 39.7333N, 105.2202W. WGS 1984 Elev. 1818 m.

Collected by permit: Colorado School of Mines, 2018, issued: Apr 1, 2018, to: Tom Schweich.

Tom Schweich 1885. 28-May-2018

Other articles: Glossary ament catkin
Full Size ImageColl. No. 1886, Salix amygdaloides  

1886  Field identification: Salix sp., staminate.

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

Salix amygdaloides Andersson.  Peachleaf Willow.

Colorado School of Mines Survey Field, Jefferson County, Colorado. Along an unnamed stream in the south end of the Survey Field, 2.47 km. south of the GNIS location of Golden. 39.7333N, 105.2204W. WGS 1984 Elev. 1823 m. In streambed with cottonwood.

Collected by permit: Colorado School of Mines, 2018, issued: Apr 1, 2018, to: Tom Schweich.

Tom Schweich 1886. 28-May-2018

Coll. No. 1886, 28 May 2018, characters observed: Perennial tree, Twigs, young, dark brown; Leaves, alternate, petiole, 10-12 mm., tuft of hairs adaxially, glands absent at base of leaf, blade, 80 mm. × 26 mm. wide, 3.08 × long as wide, young leaves have slightly tangled white hairs both sides, mature leaves, green adaxially, glaucus abaxially, margin, serrate, tip, acuminate; Staminate catkins (aments), peduncle, 12 mm., spike, 47 mm. × 9 mm. wide, stamens, #4-5, 4.5 mm.; Pistillate catkins, absent.


Full Size ImageColl. No. 1887, Turritis glabra  
1887  Field identification: Arabis pycnocarpa

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

Turritis glabra L.  Tower Rockcress.

Colorado School of Mines Survey Field, Jefferson County, Colorado. Southeast-facing slope, along an unnamed stream in the south end of the Survey Field, 2.44 km. south of the GNIS location of Golden. 39.7336N, 105.2207W. WGS 1984 Elev. 1824 m. Late, some have finished blooming, flowers pinkish rather than white.

Collected by permit: Colorado School of Mines, 2018, issued: Apr 1, 2018, to: Tom Schweich.

Tom Schweich 1887. 28-May-2018

Coll. No. 1887, 28 May 2018, characters observed: Short-lived (?) perennial, terrestrial, herb, 45 cm. to 90 cm. tall; Roots, tap. Stem, erect, #1, (1 of 4 specimens has 2 stems), leafy, proximal, simple and forked hairs, distal, glabrous; Leaves, basal and cauline, basal simple, petiole, 6 mm., blade, 60 mm. × 15 mm. wide, oblanceolate, hairs, simple and forked, margin, dentate, tip, obtuse; cauline, #20, sessile, lobed, 2.5 mm., 40 mm. × 10 mm. wide, lanceolate, reduced above, margin, entire, becoming glabrous distally; Inflorescence, raceme, 70 mm. × 11 mm. wide, not bracted, not one-sided; Pedicels (at anthesis), 3-4 mm., glabrous; Sepals, #4, 2.5 mm. × 1.1 mm. wide, ovate, green, margin chartaceous; Petals, 4.5 mm. × 0.7 mm. wide, spatulate, margin entire, color, pinkish, fading lavender; Fruit, (24-) 80-85 mm. × 0.9 mm. wide, ascending-appressed, glabrous, flattened, parallel to replum, style, base 0.4-0.5 mm. wide, stigma, 0.8-0.9 mm. wide; Ovules, biseriate, many, 0.7 mm. × 0.3 mm. wide, tan, translucent, wing not apparent.

  1888  Field identification: Silene sp.

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

Silene antirrhina L.  Sleepy Catchfly.

Colorado School of Mines Survey Field, Jefferson County, Colorado. Southeast-facing slope, along an unnamed stream in the south end of the Survey Field, 2.44 km. south of the GNIS location of Golden. 39.7336N, 105.2208W. WGS 1984 Elev. 1823 m.

Collected by permit: Colorado School of Mines, 2018, issued: Apr 1, 2018, to: Tom Schweich.

Tom Schweich 1888. 28-May-2018

Coll. No. 1888, 28 May 2018, characters observed: Annual, to 60 cm.; Stem, proximal finely pubescent, distal glabrous, distal internodes frequently glutinous (a.k.a., “sticky band below upper leaves”); Leaves, basal, withered, cauline, opposite, connate proximally, 45 mm. × 8 mm. wide, oblanceolate, reduced above, margin ciliate; Inflorescence, cymose; Calyx, 8 mm. × 3.7 mm. fused; Petals, white to pink, barely exserted from calyx, withered and withdrawn after drying; Styles, #3.

Other articles: Glossary chartaceous hyaline membranous scarious  

1889  Field identification: Poa sp.

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

Poa pratensis L.  Kentucky Bluegrass.

Colorado School of Mines Survey Field, Jefferson County, Colorado. Highest Great Plains at the base of the Rocky Mountain Front Range, small southeast-facing terrace, above an unnamed stream in the south end of the Survey Field, 2.42 km. south of the GNIS location of Golden. 39.7337N, 105.2209W. WGS 1984 Elev. 1824 m.

Collected by permit: Colorado School of Mines, 2018, issued: Apr 1, 2018, to: Tom Schweich.

Tom Schweich 1889. 28-May-2018

Coll. No. 1889, 28 May 2018, characters observed: Perennial grass, to 60 cm., rhizomatous; Roots, fibrous; Stem, herbaceous; Internodes, hollow, glabrous; Leaves, blade and sheath undifferentiated; Sheath, 86 mm., open; Ligule, membranous, 1.5 mm.; Blade, 26 mm., rolled, scabrous; Inflorescence, 1 per culm, >leaves, panicle, 70 mm. × 33 wide, pyramidal, up to 4 branches per node; Rachis, not extended, glabrous; Pedicels, 1.5 mm., sparsely scabrous; Spikelets, many, similar, 1 per node, 2-many flowered, 4.8 mm.; Compression, lateral; Disarticulation, above the glumes; Glumes, lower, 2.3 mm. vein, #1 upper, 2.6 mm., veins, #3, awns, 0; Florets, #3 per spikelet, fertile; Axis, glabrous, extended beyond upper floret; Lemma, 3 mm., >glumes, ovate, membranous, keeled, tangled hairs proximal ½ veins, likely 5 as the 2 outer veins that are visible are quite near margins, chartaceous, tip, acute, awns, 0; Palea, 3 mm., ±lemma, membranous, chartaceous, veins, #2, green, scabrous; Anthers, 1.6 mm.; Stigmas, feathery; Crypsela, brown.

I think I have been using chartaceous when I should have been using scarious or membranous for the thin, translucent margins of glumes and lemmas.

Literature Cited:
- Barkworth, Mary, 1978.
Full Size ImageFlorets of Coll. No. 1890, Hesperostipa comata  

1890  Field identification: Hesperostipa comata.

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

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

Colorado School of Mines Survey Field, Jefferson County, Colorado. Highest Great Plains at the base of the Rocky Mountain Front Range, small southeast-facing terrace, above an unnamed stream in the south end of the Survey Field, 2.42 km. south of the GNIS location of Golden. 39.7338N, 105.2211W. WGS 1984 Elev. 1823 m. Probably subspecies or variety comata if any of the various infraspecific names are to be recognized.

Collected by permit: Colorado School of Mines, 2018, issued: Apr 1, 2018, to: Tom Schweich.

Tom Schweich 1890. 28-May-2018

Coll. No. 1890, 28 May 2018, characters observed: Perennial, 50 cm., clumped, nonrhizomatous; Roots, fibrous; Stem, herbaceous; Leaves, blade and sheath differentiated; Sheath, 100-120 mm., open ≥½, glabrous; Ligule, membranous, length 3.7 mm., lacerate into 2 equal parts, auricles 0; Blade, 60 mm., involute, glabrous; Inflorescence, 1 per culm, >leaves, panicle, 200 mm. × 30 mm. wide; Rachis, not extended, somewhat scabrous throughout; Spikelets, many, similar, borne singly; Compression, unremarkable; Disarticulation, above the glumes; Glumes, lower, 23 mm., veins #3, upper, 23 mm., veins #5, awl-shaped, rounded, membranous, ±equal, tip, very narrow, not awned; Florets, 1 per spikelet; Callus, 5 mm., sharp, straight hairs to 1.5 mm., color tan; Lemma, 9.5 mm., rolled, indurate, straight hairy 0.5 mm., color tan, veins #3(?), awns, #1, 160 mm., bent, twisted, hairs, short straight proximally, scabrous distally; Palea, 9 mm., ±lemma, few white hairs on mid-vein; Stamens, #3; Anthers, 6.5 mm.

  1891  Field identification: Erigeron divergens.

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

Erigeron tracyi Greene.  Running Fleabane.

Colorado School of Mines Survey Field, Jefferson County, Colorado. Highest Great Plains at the base of the Rocky Mountain Front Range, small southeast-facing terrace, above an unnamed stream in the south end of the Survey Field, 2.42 km. south of the GNIS location of Golden. 39.7339N, 105.2212W. WGS 1984 Elev. 1825 m.

Collected by permit: Colorado School of Mines, 2018, issued: Apr 1, 2018, to: Tom Schweich.

Tom Schweich 1891. 28-May-2018

  1892  Field identification: Galium aparine.

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

Galium aparine L.  Sticky Willy, Cleavers.

Colorado School of Mines Survey Field, Jefferson County, Colorado. Highest Great Plains at the base of the Rocky Mountain Front Range, southeast-facing slope, above an unnamed stream in the south end of the Survey Field, 2.40 km. south of the GNIS location of Golden. 39.734N, 105.2219W. WGS 1984 Elev. 1829 m. Fruit, 2 hairy berries, in a thicket of Rhus trilobata.

Collected by permit: Colorado School of Mines, 2018, issued: Apr 1, 2018, to: Tom Schweich.

Tom Schweich 1892. 28-May-2018

  1893  Field identification: Koeleria macrantha.

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

Koeleria macrantha (Ledeb.) Schult.  Prairie Junegrass.

Colorado School of Mines Survey Field, Jefferson County, Colorado. Highest Great Plains at the base of the Rocky Mountain Front Range, southeast-facing slope, above an unnamed stream in the south end of the Survey Field, 2.36 km. south of the GNIS location of Golden. 39.7343N, 105.2227W. WGS 1984 Elev. 1838 m. On the edge of a small swale.

Collected by permit: Colorado School of Mines, 2018, issued: Apr 1, 2018, to: Tom Schweich.

Tom Schweich 1893. 28-May-2018


Full Size ImageColl. No. 1894, Crepis occidentalis
Full Size ImageFlower head of Coll. No. 1894, Crepis occidentalis  
1894  Field identification: Chicorieae, later tentatively determined as Crepis occidentalis.

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

Crepis occidentalis Nutt.  Largeflower Hawksbeard.

Colorado School of Mines Survey Field, Jefferson County, Colorado. Highest Great Plains at the base of the Rocky Mountain Front Range, southeast-facing slope, above an unnamed stream in the south end of the Survey Field, 2.36 km. south of the GNIS location of Golden. 39.7343N, 105.2228W. WGS 1984 Elev. 1837 m. Chicorieae, phyllaries grayish, glandular. Subspecies costata if infraspecific names are to be applied.

Collected by permit: Colorado School of Mines, 2018, issued: Apr 1, 2018, to: Tom Schweich.

Tom Schweich 1894. 28-May-2018

Coll. No. 1894, 28 May 2018, characters observed: Perennial, herb, to 25 cm., taprooted; Stem, green, tomentose, glandular, no bristles; Leaves, basal and cauline, alternate, petiole 20 mm. + blade 56 mm. × 17 mm. wide, reduced distally, pinnately lobed nearly to mid-rib, segments deltoid, tomentose, glandular; Inflorescence, heads #3 per stem, showy, >leaves; Peduncles, 23 mm.; Involucre, 12 mm. × 12 mm. wide, cyindric, tomentose; Phyllaries, 2 graduated series, 3.5 mm. &tmes; 2 mm. wide, deltoid, 12.5 mm. × 3 mm. wide, lanceolate, ±flat, tomentose, gland-tipped black bristles evenly distributed; Receptacle, epaleate; Ray flowers (ligules), many, tube 6 mm. + blade 12.5 mm. × 2.4 mm. wide, yellow; Pappus, 9 mm. well-developed, bristles, ±equal, smooth; Fruit, 2 mm. × 1.3 mm. wide, brown, glabrous.

  1895  Field identification: Lomatium orientale.

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

Lomatium orientale J.M. Coult. & Rose.  Northern Idaho Biscuitroot.

Colorado School of Mines Survey Field, Jefferson County, Colorado. Highest Great Plains at the base of the Rocky Mountain Front Range, southeast-facing slope, above an unnamed stream in the south end of the Survey Field, 2.36 km. south of the GNIS location of Golden. 39.7343N, 105.2228W. WGS 1984 Elev. 1837 m. In fruit.

Collected by permit: Colorado School of Mines, 2018, issued: Apr 1, 2018, to: Tom Schweich.

Tom Schweich 1895. 28-May-2018

  1896  Field identification: Linaria dalmatica.

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

Linaria dalmatica (L.) Mill.  Dalmatian ToadFlax.

Colorado School of Mines Survey Field, Jefferson County, Colorado. Highest Great Plains at the base of the Rocky Mountain Front Range, southeast-facing slope, above an unnamed stream in the south end of the Survey Field, 2.36 km. south of the GNIS location of Golden. 39.7342N, 105.2228W. WGS 1984 Elev. 1842 m. Full of aphids and bugs! Colorado Noxious Weed List B.

Collected by permit: Colorado School of Mines, 2018, issued: Apr 1, 2018, to: Tom Schweich.

Tom Schweich 1896. 28-May-2018


Full Size ImageHabitat of four collections in the Survey Field.
Full Size ImageColl. No. 1897, Senecio integerrimus  
1897  Field identification: Senecio integerrimus.

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

Senecio integerrimus Nutt.  Columbia Ragwort.

Colorado School of Mines Survey Field, Jefferson County, Colorado. Base of the Rocky Mountain Front Range, northeast-facing slope, above an unnamed stream in the south end of the Survey Field, 2.51 km. south of the GNIS location of Golden. 39.733N, 105.2213W. WGS 1984 Elev. 1830 m. Growing in deep grasses and forbs at the base of tall shrubs.

Collected by permit: Colorado School of Mines, 2018, issued: Apr 1, 2018, to: Tom Schweich.

Tom Schweich 1897. 28-May-2018

  1898  Field identification: Hydrophyllum fendleri.

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

Hydrophyllum fendleri (A. Gray) A. Heller.

Colorado School of Mines Survey Field, Jefferson County, Colorado. Base of the Rocky Mountain Front Range, northeast-facing slope, above an unnamed stream in the south end of the Survey Field, 2.51 km. south of the GNIS location of Golden. 39.733N, 105.2212W. WGS 1984 Elev. 1830 m. Growing in deep grasses and forbs at the base of tall shrubs.

Collected by permit: Colorado School of Mines, 2018, issued: Apr 1, 2018, to: Tom Schweich.

Tom Schweich 1898. 28-May-2018


Full Size ImageColl. No. 1899, Collinsia parviflora
Full Size ImageColl. No. 1899, Collinsia parviflora
Full Size ImageColl. No. 1899, Collinsia parviflora  
1899  Field identification: Androsace occidentalis

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

Collinsia parviflora Lindl.  Maiden Blue-eyed Mary.

.

Colorado School of Mines Survey Field, Jefferson County, Colorado. Base of the Rocky Mountain Front Range, northeast-facing slope, above an unnamed stream in the south end of the Survey Field, 2.51 km. south of the GNIS location of Golden. 39.733N, 105.2212W. WGS 1984 Elev. 1830 m. Growing in deep grasses and forbs at the base of tall shrubs.

Collected by permit: Colorado School of Mines, 2018, issued: Apr 1, 2018, to: Tom Schweich.

Tom Schweich 1899. 28-May-2018

Coll. No. 1899, 28 May 2018, characters observed: Annual herb, to 23 cm., ±minutely pubescent throughout, eglandular; Stem, round; Leaves, opposite below, but occurring in 3s above, 14 mm. × 3.5 mm. wide, oblanceolate, very short petiole if at all, generally glabrous except minute pubescence on entire margins; Inflorescence, indeterminant, axillary (or nearly entire plant inflorescence as seen in Veronica spp.); Pedicels, 4 mm. in flower, to 21 mm. in fruit, finely pubescent; Calyx, lobes, #5, tube 2 mm. + lobes 2.5-3.0 mm., keeled or mid-vein prominent, body purplish when young, fading tan, tips, green; Corolla, none found; Stamens, none found; (Possible that stamens are inserted on a corolla that is very early deciduous.) Ovary, 1.6 mm. × 1.4 mm. wide, globose, entire, very dark brown to black; Style, #1, 2.5-2.7 mm.; Stigma, simple; Fruit, capsule, 5 mm. × 2 mm. wide, entire, i.e., no notch, obovate; Seeds, #3, maybe 4, 2 mm. × 1.5 mm. wide, flattened, dark brown.

Thank you to Richard Old and Dean Wm. Taylor who helped me identify this by way of the Plant Identification group on Facebook.

  1900  Field identification: Veronica, maybe V. arvensis

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

Veronica arvensis L.  Corn Speedwell.

Colorado School of Mines Survey Field, Jefferson County, Colorado. Base of the Rocky Mountain Front Range, northeast-facing slope, above an unnamed stream in the south end of the Survey Field, 2.51 km. south of the GNIS location of Golden. 39.733N, 105.2213W. WGS 1984 Elev. 1830 m. Blue flowers, margin of fruit glandular hairy. Growing in deep grasses and forbs at the base of tall shrubs.

Collected by permit: Colorado School of Mines, 2018, issued: Apr 1, 2018, to: Tom Schweich.

Tom Schweich 1900. 28-May-2018

 

 

Locations: Little Scraggy Peak.
Full Size ImageJamesia americana “Five-Petal Cliffbush” on the flanks of Little Scraggy Peak.  

Thursday, May 31st

North slopes of Little Scraggy Peak.

Full Size ImageColl. No. 1901, Erigeron compositus
Full Size ImageColl. No. 1901, Erigeron compositus  
1901  Field identification: Erigeron sp.

Plants of Colorado
Asteraceae

Erigeron compositus Pursh.  Cutleaf Daisy.

Little Scraggy Peak, Jefferson County, Colorado. Northeast slopes of Little Scraggy Peak, 46.5 km. south of the GNIS location of Golden. 39.3402N, 105.2655W. WGS 1984 Elev. 2403 m. Moderate slope in Ponderosa pine forest.

Collected by permit: Pike-San Isabel National Forest, 2018, issued: May 2, 2018, to: Tom Schweich.

Tom Schweich 1901. 31-May-2018

Coll. No. 1901, 31 May 2018, characters observed: Perennial herb, from woody caudex, 10 cm.; Leaves, basal, petiole, 18-22 mm., 5 mm. × 6 mm. wide, ternately divided, glandular, straight multicellular hairy; Inflorescence, 1 head per stem; Peduncles, 40 mm., glandular, short straight spreading hairs; Involucre, 5 mm. × 10 mm. wide; Phyllaries, 2+ series, 6 mm. × 1.3 mm. wide, outer phyllaries glandular hairy, green mid-rib and distally, chartaceous then scarious toward margin, tip, acute, purplish; Receptacle, epaleate; Flowers, of 2 kinds; Ray flowers, #25, tube 1.8 mm. + blade 5.3 mm. × 1 mm. wide, white, fertile; Disk flowers, many, tube 3.5 mm. + lobes 0.3 mm., expanding gradually, yellow, open; Pappus, well-developed, bristles, 3.5-3.8 mm., ±equal, capillary; Cypsela, 2.2 mm. × 0.6 mm. wide, angled, brown, hairy.


Full Size ImageColl. No. 1902, Packera plattensis  
1902  Field identification: Packera plattensis.

Plants of Colorado
Asteraceae

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

Little Scraggy Peak, Jefferson County, Colorado. Buffalo Creek Recreation Area, northeast slopes of Little Scraggy Peak, 46.5 km. south of the GNIS location of Golden. 39.3392N, 105.2656W. WGS 1984 Elev. 2414 m.

Collected by permit: Pike-San Isabel National Forest, 2018, issued: May 2, 2018, to: Tom Schweich.

Tom Schweich 1902. 31-May-2018


Full Size ImageColl. No. 1903, Aliciella pinnatifida  
1903  Field identification: Gilia sp.

Plants of Colorado
Polemoniaceae

Aliciella pinnatifida (Nutt. ex A.Gray) J.M.Porter.  Sticky Gilia.

Little Scraggy Peak, Jefferson County, Colorado. Buffalo Creek Recreation Area, northeast slopes of Little Scraggy Peak, 46.5 km. south of the GNIS location of Golden. 39.3386N, 105.2655W. WGS 1984 Elev. 2436 m.

Collected by permit: Pike-San Isabel National Forest, 2018, issued: May 2, 2018, to: Tom Schweich.

Tom Schweich 1903. 31-May-2018


Full Size ImageColl. No. 1904, Harbouria trachypleura
Full Size ImageInflorescence of Coll. No. 1904, Harbouria trachypleura  
1904  Field identification: Harbouria trachypleura.

Plants of Colorado
Apiaceae

Harbouria trachypleura (A. Gray) J.M. Coult. & Rose.  Whiskbroom Parsley.

Little Scraggy Peak, Jefferson County, Colorado. Buffalo Creek Recreation Area, northeast slopes of Little Scraggy Peak, 46.5 km. south of the GNIS location of Golden. 39.3386N, 105.2655W. WGS 1984 Elev. 2436 m.

Collected by permit: Pike-San Isabel National Forest, 2018, issued: May 2, 2018, to: Tom Schweich.

Tom Schweich 1904. 31-May-2018

  1905  Field identification: Grass, some sort of Poa sp.

Plants of Colorado
Poaceae

Poa fendleriana (Steud.) Vasey.  Muttongrass.

Little Scraggy Peak, Jefferson County, Colorado. Buffalo Creek Recreation Area, northeast slopes of Little Scraggy Peak, 46.5 km. south of the GNIS location of Golden. 39.3386N, 105.2656W. WGS 1984 Elev. 2440 m.

Collected by permit: Pike-San Isabel National Forest, 2018, issued: May 2, 2018, to: Tom Schweich.

Tom Schweich 1905. 31-May-2018

Coll. No. 1905, 31 May 2018, characters observed: Perennial grass, to 45 cm., not rhizomatous, clumped; Roots, fibrous; Stem, herbaceous, compressed; Internodes, hollow, glabrous; Leaves, most leaves basal, blade and sheath differentiated; Sheath (cauline), 80 mm., open; Ligule, membranous, 1 mm., auricles, 0; Blade, 10 mm., involute, mid-rib and margins minutely scabrous, tip, prow-shaped; Inflorescence, 1 per culm, >leaves, panicle, 65 mm. × 10 mm. wide, 2 branches per node, spikelets, many; Rachis, not extended, finely scabrous; Pedicels, 1-2.8 mm.; Spikelets, many, similar, borne singly, 6 mm. × 2.2 mm. wide; Compression, lateral; Disarticulation, above the glumes; Glumes, lower, 3 mm., veins, #1, upper, 4 mm., veins, #5, weakly keeled, membranous, quite thin, awns, #0, margins, entire; Florets, 4 per spikelet, pistillate; Axis, sparsely scabrous, extended above upper floret; Lemma, 4 mm., >glumes, membranous, keeled, proximal, color, green proximal to scarious distally, mid-vein and lateral veins are hairy proximally, margin, scarious, tip, entire, obtuse, awns, 0; Palea, 2.5 mm., <lemma, keel ciliate, margin glabrous, veins, green; Crypsela, green, 1.5 mm.


Full Size ImageColl. No. 1906, Mertensia lanceolata  
1906  Field identification: Mertensia lanceolata.

Plants of Colorado
Boraginaceae

Mertensia lanceolata (Pursh) DC.  Prairie Bluebells.

Little Scraggy Peak, Jefferson County, Colorado. Buffalo Creek Recreation Area, northeast slopes of Little Scraggy Peak, 46.5 km. south of the GNIS location of Golden. 39.3384N, 105.2662W. WGS 1984 Elev. 2434 m.

Collected by permit: Pike-San Isabel National Forest, 2018, issued: May 2, 2018, to: Tom Schweich.

Tom Schweich 1906. 31-May-2018

Coll. No. 1906, 31 May 2018, characters observed: Perennial herb, with spreading-ascending branches to 20 cm.; Stem, glabrous; Leaves, basal and cauline, basal, petiole 55 mm. + blade 50 mm. × 12.5 mm. wide, lanceolate, distinct lateral veins, papillate adaxially, margin, entire, appressed ciliate; cauline, sessile, 40 mm. × 4 mm. wide, without distinct lateral veins, papillate adaxially, margin, entire, appressed ciliate; Inflorescence, panicle; Calyx, tube 1.5 mm. + lobes 2-3 mm.; Corolla, tube 4 mm. + throat 4.5 mm., limb 5 mm., deciduous, blue, small tufts of hairs at base of throat; Stamens, #5, inserted, attached at throat; Filaments, 2 mm.; Anthers, 2.3 mm., yellow; Ovary, 0.7 mm. × 1.3 mm. wide, partially fused to calyx; Style, 7.0-7.5 mm., single, ±≥anthers; Stigma, simple; Fruit, #4 nutlets, 1.7 mm. × 1.5 mm. wide.


Full Size ImageDetails of the umbel of Coll. No. 1907, Androsace septentrionalis  
1907  Field identification: Androsace occidentalis.

Plants of Colorado
Primulaceae

Androsace occidentalis Pursh.  Western Rockjasmine.

Little Scraggy Peak, Jefferson County, Colorado. Buffalo Creek Recreation Area, northeast slopes of Little Scraggy Peak, 1 km. southwest of the intersection of County Roads 126 and 550, 46.5 km. south of the GNIS location of Golden. 39.3384N, 105.2661W. WGS 1984 Elev. 2436 m.

Collected by permit: Pike-San Isabel National Forest, 2018, issued: May 2, 2018, to: Tom Schweich.

Tom Schweich 1907. 31-May-2018

  1908  Field identification: Poa sp.

Plants of Colorado
Poaceae

Poa fendleriana (Steud.) Vasey.  Muttongrass.

Little Scraggy Peak, Jefferson County, Colorado. Buffalo Creek Recreation Area, northeast slopes of Little Scraggy Peak, 1.05 km. southwest of the intersection of County Roads 126 and 550, 46.5 km. south of the GNIS location of Golden. 39.3384N, 105.2661W. WGS 1984 Elev. 2435 m. Same as Coll. No. 1905.

Collected by permit: Pike-San Isabel National Forest, 2018, issued: May 2, 2018, to: Tom Schweich.

Tom Schweich 1908. 31-May-2018


Full Size ImageDissection of Coll. No. 1909, Antennaria parvifolia
Full Size ImageColl. No. 1909, Antennaria parvifolia  
1909  Field identification: Antennaria sp.

Plants of Colorado
Asteraceae

Antennaria parvifolia Nutt.  Small-Leaf Pussytoes.

Little Scraggy Peak, Jefferson County, Colorado. Buffalo Creek Recreation Area, northeast slopes of Little Scraggy Peak, 1.05 km. southwest of the intersection of County Roads 126 and 550, 46.5 km. south of the GNIS location of Golden. 39.3384N, 105.2662W. WGS 1984 Elev. 2428 m.

Collected by permit: Pike-San Isabel National Forest, 2018, issued: May 2, 2018, to: Tom Schweich.

Tom Schweich 1909. 31-May-2018

Coll. No. 1909, 31 May 2018, characters observed: Perennial herb, to 10 cm., stoloniferous; Stem, tomentose; Leaves, basal and cauline, basal, petiole, gradually expanding into blade, blade, 16 mm. × 6.7 mm. wide, oblanceolate, entire, glandular, tomentose, tips, pointed, cauline, 10 mm. × 2 mm. wide, linear; Inflorescence, heads enclosed by an involucre, #3 per stem, not showy; Involucre, 7 mm. × 4.5 mm. wide, cylindric; Phyllaries, 5+ series, 4 mm. × 2 mm. wide to 8 mm. × 1 mm. wide, green proximally to white (pinkish) distally, tomentose, margins, flat, scarious, tips, rounded; Receptacle, epaleate; Flowers, of 1 kind; Disk flowers, many, 6.5 mm., white; Pappus, many, well-developed, bristles, 8 mm., ±equal; Cypsela, 0.8 mm. × 0.3 mm. wide, brown, glabrous.

  1910  Field identification: Penstemon virens.

Plants of Colorado
Plantaginaceae

Penstemon virens Pennell ex Rydb.  Front Range Beardtongue.

Little Scraggy Peak, Jefferson County, Colorado. Buffalo Creek Recreation Area, northeast slopes of Little Scraggy Peak, 1.2 km. southwest of the intersection of County Roads 126 and 550, 46.7 km. south of the GNIS location of Golden. 39.3366N, 105.2665W. WGS 1984 Elev. 2454 m.

Collected by permit: Pike-San Isabel National Forest, 2018, issued: May 2, 2018, to: Tom Schweich.

Tom Schweich 1910. 31-May-2018

Coll. No. 1910, 31 May 2018, characters observed: Perennial herb, to 20 cm.; Stem, proximally glabrous to finely pubescent to glandular in the inflorescence; Leaves, basal and cauline, basal, petiole, 20 mm., blade, 30 mm. × 8.5 mm. wide, lanceolate, puberulent, entire, tip, acute, cauline, opposite, 20 mm. × 4 mm. wide, sessile, lanceolate, margin, finely irregularly serrate; Inflorescence, cymose (?), 35-100 mm. × 30 mm. wide, glandular; Calyx, tubes 2 mm. + lobes 2 mm., margins, green; Corolla, tube 10 mm. + lobes 3 mm., 2 lobes up, 3 lobes down; white to blue; Stamens, #4, 10 mm.; Staminode, distally hairy on top, yellow-orange; Anthers, 1.2 mm., purple, minutely pappilate; Ovary, 2 mm. × 1.5 mm. wide, ovate, dark purplish-brown; Style, 9 mm.; Stigma, simple; Fruit, capsule.


Full Size ImageColl. No. 1910.1, Carex geophila  
1910.1  Field identification: Carex sp.

Plants of Colorado
Cyperaceae

Carex geophila Mackenzie.  Ground-Loving Sedge.

Little Scraggy Peak, Jefferson County, Colorado. Buffalo Creek Recreation Area, northeast slopes of Little Scraggy Peak, 1.2 km. southwest of the intersection of County Roads 126 and 550, 46.7 km. south of the GNIS location of Golden. 39.3366N, 105.2665W. WGS 1984 Elev. 2454 m.

Collected by permit: Pike-San Isabel National Forest, 2018, issued: May 2, 2018, to: Tom Schweich.

Tom Schweich 1910.1 31-May-2018

Coll. No. 1910.1, 31 May 2018, characters observed: Perennial sedge, caespitose, to 17 cm.; Inflorescence, <leaves, differentiated spikes, basal spikes present; Spikes, terminal spike, staminate, 10 mm. × 1.3 mm. wide; lateral spikes, pistillate, #2, 3-4 flowered; Pistillate scales, ovate, ±=perigynia; Perigynia, suborbicular, 4 mm., pubescent, beak, 1.5 mm.


Full Size ImageColl. No. 1911, Potentilla fissa  
1911  Field identification: Potentilla sp.

Plants of Colorado
Rosaceae

Potentilla fissa Nutt. ex Torr. & A.Gray. (Syn: Drymocallis fissa (Nuttall) Rydberg) fide Ackerfield (2015).  Bigflower Cinquefoil.

Little Scraggy Peak, Jefferson County, Colorado. Buffalo Creek Recreation Area, northeast slopes of Little Scraggy Peak, 0.83 km. west southwest of the intersection of County Roads 126 and 550, 46.2 km. south of the GNIS location of Golden. 39.3413N, 105.2652W. WGS 1984 Elev. 2421 m. At base of rocks.

Collected by permit: Pike-San Isabel National Forest, 2018, issued: May 2, 2018, to: Tom Schweich.

Tom Schweich 1911. 31-May-2018

Coll. No. 1911, 31 May 2018, characters observed: Perennial herb, rhizomatous, to 20 mm.; Stem, erect, green, multicellular viscid hairs; Leaves, basal and cauline, basal, 58 mm. × 16 mm. wide, compound, leaflets, #11, cauline, #3-4 per stem, alternate, compound, pinnate, stipules, 5 mm. × 2 mm. wide, lanceolate, entire to once shallowly toothed; petiole, 18 mm., multicellular viscid hairs, prior years remaining on plant (as sometimes described for P. rupincola), blade, 51 mm. × 22 mm. wide, leaflets, #13, petiolulate (not decurrent), 12 mm. × 9 mm. wide, viscid hairy, terminal leaflet (8)10 mm. side, margin, flat, serrate, teeth, 4-6 per side, on distal ¾, tip dark reddish; Inflorescence, clusters of 5+ flowers; Pedicels, 3 mm., hairy below; Calyx, lobes, #5, 7-7.5 mm. × 2.7-3.0 mm. wide, fused ±½, viscid hairy, epicalyx bractlets, 3-3.5 mm. × 0.8 mm. wide, ±½ sepals; Flowers, limb, 15 mm.; Petals, #5, 7-8 mm. × 5-9 mm. wide, obovate, yellow; Receptacle, hairy; Stamens, >25; Anthers, 1.4 mm. × 1 mm. wide; Ovary, many, superior, glabrous; Styles, 1.3 mm., attached laterally below top of ovary, thickest at base, tapered from middle, not warty; Stigma, #1; Achenes, glabrous.

  1912  Field identification: Scutellaria, I assume S. brittonii.

Plants of Colorado
Lamiaceae

Scutellaria brittonii Porter.  Britton's Skullcap.

Little Scraggy Peak, Jefferson County, Colorado. Buffalo Creek Recreation Area, northeast slopes of Little Scraggy Peak, 0.8 km. west southwest of the intersection of County Roads 126 and 550, 46.2 km. south of the GNIS location of Golden. 39.3413N, 105.2648W. WGS 1984 Elev. 2425 m.

Collected by permit: Pike-San Isabel National Forest, 2018, issued: May 2, 2018, to: Tom Schweich.

Tom Schweich 1912. 31-May-2018


Full Size ImageColl. No. 1913, Carex sp.
Full Size ImageColl. No. 1913, Carex sp.  
1913  Field identification: Carex sp.

Plants of Colorado
Cyperaceae

Carex.  Sedge.

Little Scraggy Peak, Jefferson County, Colorado. Buffalo Creek Recreation Area, northeast slopes of Little Scraggy Peak, 0.8 km. west southwest of the intersection of County Roads 126 and 550, 46.2 km. south of the GNIS location of Golden. 39.3411N, 105.2647W. WGS 1984 Elev. 2419 m. Growing in hollows in a pile of boulders.

Collected by permit: Pike-San Isabel National Forest, 2018, issued: May 2, 2018, to: Tom Schweich.

Tom Schweich 1913. 31-May-2018

Coll. No. 1913, 31 May 2018, characters observed:

Perennial sedge,

Habit, densely caespitose;

Culms, to 60 cm., lightly scabrous below head;

Leaves, 2.2 mm. wide, green, Sheaths, white-hyaline, ventrally smooth;

Inflorescence, 22-26 mm. × 8-9 mm. wide, 8-9 spikes, closely clustered;

Spikes, identical (appearing), brown (but not reddish), 7-9 mm. × 5-6 mm. wide, gynecandrous(?);

There are no anthers. However, there are filaments. In the upper spikes, the flowers are mixed staminate and pistillate with neither appearing to be particularly superior to the other.

Proximal bract, short (7.5 mm.) and setaceous (bristle-like);

Pistillate scales, 3.5 mm., <perigynia, green center, brawn laterally, hyaline margin;

Perigynia, #10 per spike, 3 mm. × 1.4 mm. wide, some weakly winged, papillate, beak flattish, ± sloping to tip, serrulate, achene to beak tip, 1.3 mm.;

Achene, 1.7 mm. × 1.4 mm. wide, biconvex;

Stigma, #2.

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Date and time this article was prepared: 5/28/2019 2:43:48 PM