362 BRASSICACEAE 



36. A. divaricarpa A. Nels. Biennial or perhaps perennial, often branched 

 at the base; stems 5-7 dm. high, sparingly retrorse-hairy below; basal leaves 

 2-4 cm. long, stellate, oblanceolate; stem-leaves lanceolate, sagittate at the base; 

 pedicels 1 cm. or less, spreading; pods straight or slightly arcuate; seeds more or 

 less in two rows. Mountains: Colo. 'Utah Wyo. Ida. Mont. Je-Jl. 



37. A. densicaulis A. Nels. Biennial; stems several, 3-5 dm. high, gla- 

 brous or slightly hirsute near the base; basal leaves oblanceolate, 2-3 cm. long, 

 finely stellate; stem-leaves glabrous, linear, auriculate-clasping at the base; 

 pedicels about 1 cm. long, spreading; pods arcuate, often somewhat drooping; 

 seeds in one row. Wooded gravelly slopes: Wyo. Jl. 



38. A. fructicosa A. Nels. Biennial; stems several, 3-5 dm. high; basal 

 leaves oblanceolate, stellate, entire or denticulate; petals white, 7 mm. long; 

 pedicels 5-7 mm. long, spreading; pods arcuate, 4-5 cm. long, 2 mm. wide; seeds 

 mostly in one row. Dry roadsides: Wyo. -Ida. Mont. Jl. 



39. A. gracilenta Greene. Perennial; stems 2-4 dm. high, ascending; basal 

 leaves narrowly oblanceolate, entire; stem-leaves glabrous, linear or linear- 

 oblong; petals 4-5 mm. long, rose-colored or white; pedicels 8-10 mm. long, spread- 

 ing; pods arcuate, 3-5 cm. long; seeds more or less in two rows. Canons, plains 

 and mountains: N.M. Colo. Utah. Submont. Ap-My. 



40. A. Fendleri (S. Wats.) Greene. Biennial or short-lived perennial; stem 

 2-5 dm. high; basal leaves oblanceolate, 1-3 cm. long; stem-leaves glabrous, 

 linear-lanceolate; petals 6-7 mm. long, pink or whitish; pedicels 1-2 cm. long, 

 ascending to somewhat recurved; pods somewhat arcuate, 4-6 cm. long, 2 mm. 

 wide; seeds 2-ro wed. Mountains: N.M. S.D. Wyo. Submont. Mont. My-Je. 



41. A. consanguinea Greene. Biennial or maybe perennial; stems erect, 

 3-4 dm. high, stellate-canescent; basal leaves 2-3 cm. long, oblanceolate, serrate, 

 finely stellate; stem-leaves lance-oblong, stellate; sepals stellate; petals 5-6 mm. 

 long, pinkish; pedicels about 1 cm. long; pods pendent, 4-5 cm. long, 2mm. wide; 

 seeds more or less in two rows. Mountains: Colo. N.M. Submont. My-Je. 



42. A. lignifera A. Nels. Perennial, often branched at the base; stems 

 2-4 dm. high, minutely stellate below; basal leaves narrowly oblanceolate, entire, 

 3-6 cm. long, finely stellate, petioled; stem-leaves oblong, 2-4 cm. long; petals 

 white or pinkish, 7-8 mm. long; pods usually pendulous, 3-4 cm. long, 2 mm. 

 wide; seeds in one irregular row. Among sage-brush and on hillsides: Wyo. 

 Colo. Utah. Submont. 'Mont. Je-Jl. 



43. A. brevisiliqua Rydb. Biennial; stems 3-4 dm. high, sparingly strigose- 

 stellate below, otherwise glabrous; basal leaves narrowly oblanceolate, 1-2 cm. 

 long, finely stellate; stem-leaves linear, glabrous; petals purplish, about 6 mm. 

 long; pod 2-4 cm. long, 2 mm. wide; seeds in two rows. Mountains: Alta. 

 B.C. Submont. Jl-Au. 



44. A. rhpdantha Greene. Biennial; stem erect, 4-6 dm. high, stellate 

 below, otherwise glabrous; basal leaves oblanceolate, 1-5 cm. long, stellate; upper 

 stem-leaves oblong, sagittate at the base; petals pink, 8-10 mm. long; pedicels 

 about 1 cm. long, reflexed; pods pendent, 5-7 cm. long, 2 mm. wide. Scarcely 

 distinct from the next. Mountains and hills: Colo. Utah. Submont. -Mont. 

 Je-Jl. 



45. A. retrofracta Grah. Biennial or perennial; stems 3-5 dm. high, 

 usually stellate throughout; basal leaves oblanceolate, 1-3 cm. long, densely 

 stellate, usually entire; stem-leaves lanceolate, sagittate at the base; sepals 

 stellate; petals 6-8 mm. long, white or pinkish; pedicels 1 cm. long, abruptly 

 reflexed; pods 3-6 cm. long, 2 mm. wide. A. Holboellii Am. Auth. A. Kochii 

 Blankinship. (?) A. demissa Greene. Plains, hills, and mountains: Mack. 

 Man. Neb. Utah Calif. B.C. Plain Mont. My-Jl. 



46. A. lignipes A. Nels. Short-lived perennial; stems 3-5 dm. high, 

 finely stellate below, glabrous above; basal leaves entire, narrowly oblanceolate, 

 densely stellate-pubescent, 1-2 cm. long; stem-leaves almost linear, auriculate, 

 revolute; sepals stellate; petals 5-6 mm. long, white or purplish; pedicels abruptly 



