Eastern Mojave Vegetation Tin Cup Ridge (social trail), Jefferson County, Colorado  
 

Tom Schweich  

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 Just a small warning here: this is a social trail. It has not been engineered, constructed or maintained by any public entity. Therefore, there are sections that are overly steep without steps, badly eroded with loose rock, unprotected steep drop-offs, opportunity to fall into deep pits, all manner of toxic plants, ample opportunity for snake bite, pestilence of frogs, and alien abduction. Don't go here on my recommendation; you're on your own. And whether you die or have fun, don't blame me. You have been warned.

Other articles: Rooney Road Sports Complex Road at end Field Notes 23 Sep 2015 20 Mar 2017

Locations: Rooney Road Sports Complex.
Full Size ImageA gate and hiker pass-thru has been added to the fence.  

Start of trail near Rooney Road Sports Complex.
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Trailhead for Tin Cup Ridge

Full Size ImageColl. No. 1300, Symphyotrichum falcatum
Full Size ImageInflorescence of Coll. No. 1300, Symphyotrichum falcatum  
Symphyotrichum falcatum (Lindl.) G.L. Nesom. White Prairie Aster.

Tin Cup Ridge, Jefferson County, Colorado. Lower northeast slopes of Tin Cup Ridge, the northern extension of Dakota Ridge into Golden, 4.5 km south southeast of the GNIS location of Golden. 39.7169N, 105.2062W. WGS 1984. Elev. 1879 m.

Coll. No. 1300, 23 Sep 2015, characters observed: Perennial herb, to 40 cm., scabrous throughout; Leaves, basal, unknown, cauline, alternate, sessile, 32 mm. × 2.7 mm. wide, linear-oblanceolate, entire, tip spinulose, gradually reduced above; Inflorescence, extended panicle; Involucre, 5 mm. × 4.5 mm. wide; Phyllaries, in 4 graduated series, 3-5 mm. × 0.8 mm. wide, chartaceous below, green above, elliptical, tip spinulose except innermost; Receptacle, epaleate; Flowers of 2 kinds, Rays, pistillate, corolla, tube 2.5 mm. + laminae 5 mm. × 1.3 mm, white spatulate; Disk flowers, corolla, 4 mm., some rose to purple, some yellow; Pappus, capillary bristles, 4.5 mm.; Cypsela, 1 mm., hairy.

Other articles: Field Notes on the trail
Full Size ImageTin Cup Ridge Trail
Full Size ImageNorth of the trail to US Highway 40.  

Steep trail, and dug out area (quarry?) north of trail.

Other articles: Field Notes 23 Sep 2015

Locations: Tin Cup Ridge.
Full Size ImageHeritage Road at US Highway 40.  

View of US Hwy 40, Heritage Road, and site of archeological dig.

Other articles: Field Notes Coll. No. 1105, 14 May 2015 Coll. No. 1106, 14 May 2015  

Comandra umbellata (L.) Nutt. ssp. pallida (A. DC.) Piehl and Toxicoscordion Zigadenus venosum paniculatus (Nutt.) S. Watson var. gramineus (Rydb.) Ackerfield, all of Z. venosum having been placed in synonomy with Z. paniculatus by Ackerfield (2015).

Other articles: Field Notes 15 May 2015
Full Size ImageTrail on spine of Tin Cup Ridge  

 

Other articles: Field Notes Coll. No. 1107, 14 May 2015
Full Size ImageHabitat of Coll. No. 1107, Penstemon virens
Full Size ImageColl. No. 1107, Penstemon virens  

Penstemon virens Pennell ex Rydb. Front Range Beardtongue.

Tin Cup Ridge, Jefferson County, Colorado. Openings along the rocky top of Tin Cup Ridge, the northern extension of Dakota Ridge into Golden, 4.53 km south southeast of the GNIS location of Golden. 39.7163N, 105.2066W. WGS 1984. Elev. 1903 m. East across US Highway 40 from the Peabody Museum dig at Magic Mountain, which was collected by E. H. Brunquist (1959).

Coll. No. 1107, 14 May 2015, characters observed (or not!): Perennial terrestrial herb, to 30 cm.; Stem very short hairy proximally (supposedly in lines but not clearly so to me), becoming glandular-hairy in the inflorescence; Leaves, basal and cauline, glabrous, basal, petiole, 20 mm., blade, 35 mm. × 13 mm. wide, ovate, entire, cauline, petioled 8 mm. to sessile distally, 25 mm. × 7 mm. wide, margin entire to minutely toothed distally; Inflorescence, thryse, 8 to 12 flowers per node; Calyx, lobe 2 mm. + 5 lobes 2 mm. = 4 mm.; Flowers, zygomorphic, parts in 5s, not spurred; Corolla fused at base, purple, 15 mm., lobes 2 mm., limb 10 mm., outer surface glandular-pubescent; Stamens, 4, included, staminode 1, hairy at tip; Anther, purple, sacs papillate.

Other articles: Field Notes Coll. No. 1108, 14 May 2015
Full Size ImageColl. No. 1108, Packera plattensis  

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

Tin Cup Ridge, Jefferson County, Colorado. In shrubby vegetation along the top of Tin Cup Ridge, the northward extension of Dakota Ridge into Golden, 4.58 km south southeast of the GNIS location of Golden. 39.716N, 105.2066W. WGS 1984. Elev. 1905 m. East across US Highway 40 from the Peabody Museum dig at Magic Mountain, which was collected by E. H. Brunquist (1959).

Coll. No. 1108, characters observed: Perennial herb, to 60 cm.; Leaves, basal and cauline, some densely tomentose along petiole and mid-vein, else thinly tomentose, basal, petiole 60 mm. + blade ovate 110 mm. × 35 mm. wide, margin entire to slightly scalloped (somewhat more like that described for P. crocata), cauline, sessile, lance-linear, 130 mm. × 15 mm. wide, reduced above, margins, some with small, dense, sharp teeth; Inflorescence, ±8 heads per stem; Phyllaries in 1 series, (partially enclosing alternate ray and disc flowers), 6 mm. × 1.7 mm. wide, tips mucronate; Receptacle epaleate; Pappus of bristles in ±1+ series, 6-7 mm.; Ray flowers, few (8-12), ♀-only, tube 4 mm. + blade 8 mm. = 12 mm. × 3 mm. wide; Disc flowers bisexual.

Other articles: Field Notes 20 Mar 2017, Coll No. 1567  

Claytonia rosea Rydb.

Other articles: Field Notes Coll. No. 1299, 23 Sep 2015
Full Size ImageHabitat of Coll. No. 1299, Dieteria bigelovii
Full Size ImageFlower head of Coll. No. 1299, Dieteria bigelovii  

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

Tin Cup Ridge, Jefferson County, Colorado. Among rocks along the top of Tin Cup Ridge, the northern extension of Dakota Ridge into Golden, 4.7 km south southeast of the GNIS location of Golden. 39.7148N, 105.2063W. WGS 1984. Elev. 1929 m.

Coll. No. 1299, 23 Sep 2015, characters observed: Perennial herb, to 60 cm.; Stem erect, stipitate-glandular, more dense above; Leaves, basal, unknown, cauline, alternate, sessile, 50 mm. × 4-5 mm. wide, reduced above, lance-linear, spinulose toothed; Inflorescence, panicle, heads borne singly on pedicels 10-20 mm.; Involucre, 8 mm. × 12 mm. wide; Phyllaries, 5+ series, imbricate, chartaceous below, green and stipitate-glandular above, tips, acuminate, reflexed; Receptacle, epaleate; Flowers of 2 kinds; Rays, fertile, corolla, tube 4.5 mm. + laminae 10 mm. × 1.5 mm. wide, spatulate, blue; Disk flowers, corolla, 6 mm., yellow; Pappus, capillary bristles, 6 mm.; Cypsela, 3 mm., hairy.

Other articles: Field Notes 23 Sep 2015
Full Size ImageGrave of Carlie the Critter Dog  

Grave of Carlie the Critter Dog (#carliethecritterdog).

Other articles: Field Notes Coll. No. 1298, 23 Sep 2015
Full Size ImageHabitat of Coll. No. 1298, Senecio spartioides
Full Size ImageColl. No. 1298, Senecio spartioides  

Habitat of Senecio spartioides beside the Tin Cup Ridge (social) trail.

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

Tin Cup Ridge, Jefferson County, Colorado. Among rocks along the top of Tin Cup Ridge, the northern extension of Dakota Ridge into Golden, 4.7 km south southeast of the GNIS location of Golden. 39.7147N, 105.2062W. WGS 1984. Elev. 1928 m.

Coll. No. 1298, 23 Sep 2015, characters observed: Perennial herb, to 50 cm.; Leaves, basal, unknown, cauline, alternate, 90 mm. × 3 mm. wide, narrowly oblanceolate, reduced above to 30 mm. × 1 mm. wide, variously hairy in axils and ±lower surface; Involucre, 12.5 mm. × 6 mm., narrowly campanulate, bractlets not prominent; Phyllaries, 2 series? or 1 series with 2 forms? outer, 7.5 mm. × 0.7 mm. wide, all green, inner, 7.5 mm. × 1.3 mm. wide, centrally green with margins chartaceous, all tips dark; Receptacle, epaleate; Rays, fertile, corolla, tube 5 mm. + blade 9 mm. × 2 mm. wide, yellow, lobes 3; Disk flowers, corolla, 6 mm., yellow; Pappus, 1 series of fine capillary bristles, 5 mm.; Cypsela, 4 mm., 5-angled, dark gray, “hirtellous” throughout (not just the angles).

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Flower Heads of Coll. No. 1298, Senecio spartioides

Other articles: US Hwy 40 near Heritage Sq
Full Size ImageUS Highway 40 near Golden  

 

Other articles: Golden Checklist Flora 9330510280Balsag010 Field Notes 15 May 2015 Coll. No. 1109, 14 May 2015
Full Size ImageStar Lily (Leucocrinum montanum) as seen on Tin Cup Ridge.
Full Size ImageColl. No. 1109, Balsamorhiza sagittata  

Balsamorhiza sagittata
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Coll. No. 1109, Balsamorhiza sagittata
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Coll. No. 1109, Balsamorhiza sagittata

Other articles: Field Notes 20 Mar 2017
Full Size ImageSurvey monument just off-trail.  

There is a survey monument about 35 m. west of the trail.

Other articles: Field Notes 20 Mar 2017
Full Size ImageRipple marks on the bottom of sandstone strata.  

Ripple marks on the bottom of a sandstone stratum.

Other articles: Field Notes 20 Mar 2017
Full Size ImagePonderosa pine along trail which has been partially felled by a hatchet or axe.  

Ponderosa pine cut with an axe or hatchet, presumably to clear it away from the trail.

Other articles: Field Notes 23 Sep 2015
Full Size ImageArctostaphylos uva-ursi along the spine of Tin Cup Ridge
Full Size ImagePonderosa pine and Arctostaphylos uva-ursi on Tin Cup Ridge  

 

Other articles: Field Notes 23 Sep 2015
Full Size ImageCoal seams mined out on Tin Cup Ridge  

 

Other articles: Field Notes 20 Mar 2017
Full Size ImageSink hole above a closed mine.  

Saddle, north end of quarry, location of collection no. 1297, white Erigeron.

Other articles: Field Notes Coll. No. 1297, 23 Sep 2015
Full Size ImageHabitat of Coll. No. 1297, Erigeron  

Location of collection no. 1297, white Erigeron Symphyotrichum porteri.

Other articles: Field Notes Coll. No. 1364, 21 May 2016
Full Size ImageColl. No. 1364, Potentilla fissa  

Location of Coll. No. 1364, Potentilla fissa, on the east side of the trail, between the trail and the excavated area.

Other articles: Field Notes Coll. No. 1362, 21 May 2016
Full Size ImageColl. No. 1363, Delphinium, maybe D. nutallianum
Full Size ImageColl. No. 1362, Delphinium nuttallianum  

North side of rocks, habitat for Coll. No. 1362, Delphinium sp., maybe D. nuttallianum, and Coll. No. 1363, Rubus deliciosus.

Other articles: Field Notes 23 Sep 2015
Full Size ImagePanorama of valley west of Tin Cup Ridge.  

Panorama of Martin Marietta quarry, Heritage Square, and US Highway 40.

Literature Cited:
- Chen, Chia Jui, Meghan G. Mendenhall, and Billie L. Turner, 1994.

Other articles: Field Notes Coll. No. 1360, 21 May 2016
Full Size ImageColl. No. 1360, Thermopsis rhombifolia var. divaricarpa on Tin Cup Ridge.  

Trail comes up on top of ridge again. Location of Coll. No. 1360 Thermopsis rhombifolia and Coll. No. 1361 Juniperus communis/

Other articles: Field Notes Coll. No. 1355, 21 May 2016 Coll. No. 1357, 21 May 2016
Full Size ImageColl. No. 1355, Arctostaphylos uva-ursi
Full Size ImageColl. No. 1357, Harbouria trachypleura  

Location of Coll. Nos. 1355-8.
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Coll. No. 1355, Arctostaphylos uva-ursi

Other articles: Field Notes 23 Sep 2015
Full Size ImagePark Boundary  

Park above ...
Jefferson County Open Space park boundary.
Private land, Public Service Company of Colorado below

Locations: Tin Cup Ridge.  

Transmission line tower.

Other articles: Field Notes 23 Sep 2015
Full Size ImagePossibly Harbouria trachypleura  

Unknown Apiaceae, possibly Harbouria trachypleura.

Other articles: Field Notes 23 Sep 2015
Full Size ImageView south off of Tin Cup Ridge to US Interstate 70.  

Parking lots, trail heads, and intersections.

Other articles: Cty Rd 93 at US 40 US Hwy 40 at CR 93  

T-Rex Park and Ride Lot
 

Literature Cited

  A list of all literature cited by this web site can be found in the Bibliography.
  Chen, Chia Jui, Meghan G. Mendenhall, and Billie L. Turner. 1994. Taxonomy of Thermopsis (Fabaceae) in North America. Annals of the Missouri Botanical Garden. 81(4):714-742.
If you have a question or a comment you may write to me at: tas4@schweich.com I sometimes post interesting questions in my FAQ, but I never disclose your full name or address.  


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Date and time this article was prepared: 5/18/2017 12:03:37 PM