About 250 species in temperate and cold parts of North America, South America, 

 Europe and Asia. 



1. Styles 0.5-1.5 mm. long; pedicels in fruit ascending to erect 1. D. aurea. 



1. Styles 1.5-3.5 mm. long; pedicels in fruit spreading or spreading-ascending 



2. D. Helleriana. 



1. Draba aurea Vahl. 



Canescent to greenish short-lived perennial, 1-5 dm. tall, the crown simple to 

 branched; stems 1 to several, erect or somewhat decumbent at base, pilose-hirsute 

 with a mixture of simple, bifid and cruciform hairs; leaves numerous, densely 

 pubescent with a mixture of mostly cruciform but also some bifid or simple hairs; 

 basal leaves rosulate, petiolate, mostly oblanceolate, entire to rarely denticulate, 

 1-5 cm. long; cauline leaves as many as 30, sessile or subsessile, ovate to oblanceo- 

 late, entire to dentate; racemes elongate, without bracts or the lower flowers brac- 

 teate; pedicels 3-20 mm. long, in fruit ascending to erect; sepals 2-3.5 mm. long; 

 petals pale- to deep-yellow, 4.5-6 mm. long; silicles narrowly to broadly lanceolate, 

 7-20 mm. long, 2-4 mm. broad, plane or contorted, softly pubescent to glabrous; 

 style 0.5-1.5 mm. long; seeds 20 to 50, about 1 mm. long. 



In wet alpine meadows, on seepage slopes along streams, forested slopes and 

 ravines in N. M. (Hitchcock et al) and Ariz. (Apache, Cochise and Coconino 

 COS.), June-Aug.; Alas., s. through the Rocky Mts. to N.M. and Ariz. 



Most of our material can be referred to var. leiocarpa (Pays. & St. John) C. L. 

 Hitchc. with relatively small flowers, short glabrous capsules and short fruiting 

 styles. 



2. Draba Helleriana Greene 



Almost identical in characteristics to those of D. aurea except those noted in the 

 key. They may represent two phases of a single species. 



In similar habitats to D. aurea in N. M. (Bernalillo, Grant, Sandoval, Santa Fe, 

 San Miguel, Socorro, Sierra and Taos cos.) and Ariz. (Apache, Cochise, Coconino, 

 Graham, Greenlee and Pima cos.), June-Sept.; Colo., N. M., Ariz, and n. Mex. 



14. Capsella Medic. 



About 5 species native to Eurasia. 



1. Capsella Bursa-Pastoris (L.) Medic. Shepherd's purse, paniquesillo. Fig. 

 477A. 



Stem 1-5 dm. tall, branching, pubescent below, glabrous above; basal leaves 

 in a rosette, usually lyrate-pinnatifid; stem leaves auricled, dentate to entire; flowers 

 in long racemes; petals white, 1.5-2 mm. long; pedicels slender, spreading at right 

 angles or nearly so, 8-15 mm. long; siliques obcordate-triangular, 5-8 mm. long, 

 strongly flattened contrary to the partition; styles less than 0.5 mm. long; seeds 

 numerous, oblong, orange-yellow, wingless, about 1 mm. long; cotyledons incum- 

 bent. 



In mud and seepage areas about springs and along streams, wet meadows, a 

 ubiquitous weed, Feb.-Sept.; widespread weed occurring in most parts of the 

 world; introd. 



15. Camelina Crantz False Flax 

 About 10 species of the Mediterranean area, Europe and Asia. 



1. Camelina sativa (L.) Crantz. Gold-of-pleasure. 



Annual 3-9 dm. tall, erect, usually with ascending branches; stem glabrous or 



with minute closely appressed stellate hairs; leaves lanceolate, the lowest tapering 



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