Eastern Mojave Vegetation Coll. No. 2691, Lactuca tatarica var. pulchella.  
 

 

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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. 		  Asteraceae Lactuca tatarica pulchella
Photographed 5 February 2022.

Plants of Colorado
Asteraceae

Lactuca tatarica (L.) C.A.Mey. var. pulchella (Pursh) Breitung.  Blue Lettuce.

Salt Creek, Park County, Colorado. South-facing hillside along Salt Creek and Pike-San Isabel National Forest Road 435 "Salt Creek Road," 3.2 mi. by road west of US Highway 285, 145 km. southwest of the GNIS location of Golden. 38.9581°N, 106.0124°W. WGS 1984 Elev. 2863 m. Blue ligules, copious pappus of bristles, milky sap, lower cauline leaves runcinate and secund. Open hillside with ponderosa pines, collected nearby: Chaenactis douglasii, Erigeron subtrinervis, Gutierrezia sarothrae, and Hymenoxys richardsonii var. floribunda.

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

Tom Schweich 2691. 16-Aug-2021

Coll. No. 2691, 16 Aug 2021, characters observed: Perennial herb, 80-90 cm., supposedly rhizomatous but I never dug any out, glabrous; Leaves, cauline, alternate, sessile, blade 100-110 mm. × 20 mm. wide, runcinate to entire above; Inflorescence, heads, many, showy, >leaves; Involucre, 12 mm. × 3 mm. wide, lower << rest of involucre, thin (tear easily), green, flat, margin, scarious, tips, acute, purple, little tuft of hairs; Ray flowers, tube 1.7 mm. + blade 7.5 mm. × 1.3 mm. wide, tips, 5-lobed, blue, fertile; Pappus, many well-developed, fine bristles, 9 mm., a little off-white.

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Date and time this page was prepared: 11/3/2024 5:39:36 PM