Eastern Mojave Vegetation Coll. No. 3031, Draba streptocarpa.  
 

 

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If you have a question or a comment about this photograph you may write to me at: tomas@schweich.com I sometimes post interesting questions in my FAQ, but I never disclose your full name or address. 		  Brassicaceae Draba streptocarpa
Photographed 17 December 2023.

Plants of the Douglas Mountain Study Area
Jefferson County Open Space, Colorado, USA
Brassicaceae

Draba streptocarpa A. Gray.  Twisted-fruit Whitlow-grass.

Guy Gulch, Jefferson County, Colorado. Deep shade of a small gulch tributary to Guy Gulch, 105 m. southwest of County Road 70, 1.19 km. northwest of Centennial Ranch house, 13.4 km. (geodesic) northwest of the GNIS location of Golden. 39.8008°N, 105.3656°W. WGS 1984 Elev. 2423 m. Fruit flat and twisted.

Collected by permit: Jefferson County Open Space, 2023, issued: Apr 10, 2023, to: Tom Schweich.

Tom Schweich, with John Vickery 3031. 3-Jul-2023

Coll. No. 3031, 3 Jul 2023, characters observed: Perennial (short-lived?), to 40 cm., hairs various combinations of simple and forked, but not dolabriform or stellate; Leaves, basal, withered, cauline, simple, sessile, lanceolate, 30 mm. ×7 mm. wide, diminishing gradually, margin entire; Inflorescence, raceme, ebracteate; Sepals, #4, 1 row, 2.4 mm. × 1 mm. wide, oblong, color, green, margin scarious, abaxially hairy; Petals, 3.5 mm. × 1.4 mm. wide, obovate, entire, yellow; Anthers, 0.4 mm., ovate; Style, 0.7 mm.; Stigma, capitate; Fruit, pedicels, 12 mm., ascending, body, 10.5 mm. × 2.2 mm. wide (4.77:1), pubescent (maybe slightly more pubescent along margin but not “glabrous with simple hairs along the margin”).

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Date and time this page was prepared: 11/3/2024 5:39:46 PM