MUSTARD FAMILY 361 



25. A. Egglestonii Rydb. Stems several, about 1 dm. high, decumbent at 

 the base, glabrous; basal leaves crowded, spatulate, thick, 1-2 cm. long; stem- 

 leaves elliptic or lanceolate, less than 1 cm. long, more or less auricled at the 

 base; petals light purple, about 4 mm. long; pods spreading on short spreading 

 pedicels, glabrous, 2-2.5 cm. long, obtuse at the apex. High mountains: Colo. 

 Alp. Jl. 



26. A. recondita Greene. Stems glabrous, about 3 dm. high, branched; 

 basal leaves thin, obovate, more or less dentate; stem-leaves lanceolate, auriculate- 

 clasping; sepals with scattered stellate hairs; petals rose-purple, 5 mm. long; 

 pedicels spreading, about 8 mm. long; pod curved, glabrous, 2.5-3.5 cm. long. 

 Mountains: Colo. Ariz. Submont. Je. 



27. A. setulosa Greene. Stems 2-3 dm. high; basal leaves oblanceolate, 

 1-2 cm. long; stem-leaves glabrous, somewhat sagittate at the base; sepals spar- 

 ingly stellate; petals white, 6-7 mm. long; pedicels spreading, curved; pod spread- 

 ing or recurved, 3-4 cm. long; seeds slightly 2-rowed. A. Fendleri A. Nels., 

 not Greene. A. Diehlii M. E. Jones. Dry hills: Wyo. Colo. Utah. Sub- 

 mont. My-Je. 



28. A. rugocarpa Osterhout. Stems 1-2 dm. high; basal leaves oblance- 

 olate, 2-3 cm. long; stem-leaves small, linear, often with small auricles at the 

 base; petals 5 mm. long, rose or pale purple; pod 3 mm. long, spreading or pendu- 

 lous. A. aprica A. Nels. Mountains: Colo. Wyo. Submont. Mont. Je. 



29. A. oxylobula Greene. Stems about 1 dm. high; basal leaves narrowly 

 linear-oblanceolate, about 2 cm. long; petals pink, 4 mm. long; pedicels about 

 5 mm. long, spreading; pods 1.5-2.5 cm. long; seeds almost in one row. Moun- 

 tains: Colo. Submont. Je. 



30. A. spatifolia Rydb. Stems 2-3 dm. high; basal leaves narrowly 

 oblanceolate, 2-3 cm. long; stem-leaves linear-lanceolate, sagittate at the base; 

 petals 4-5 mm., pinkish; pedicels spreading or somewhat reflexed, 8-10 mm. long; 

 pods 4-5 cm. long; style obsolete. Mountains: Colo. Submont. Jl. 



31. A. perelegans A. Nels. Biennial; stem strict, 5-7 dm. high, hirsute 

 with branched hairs below, glabrous above; basal leaves oblanceolate, more or 

 less dentate, finely stellate, 3-5 cm. long; stem-leaves linear-lanceolate, sagittate 

 at the base, glabrate; petals dark purple to nearly white, 8-10 mm. long; pedicels 

 5-8 mm. long, ascending or spreading; pods arcuate-spreading, 6-8 cm. long, 

 nearly 2 mm. wide. A. arcuata subvillosa S. Wats. A. elegans A. Nels. Open 

 woods and slopes: Mont. Wyo. Utah Wash. Son. Submont. Ap-Je. 



32. A. brachycarpa (T. & G.) Britton. Stem 4-6 dm. high; basal leaves 

 oblanceolate, usually dentate, 2-5 cm. long; stem-leaves lanceolate, sagittate at 

 the base, glabrous; petals pink, about 8 mm. long; pedicels about 5 mm. long, 

 spreading or ascending; pods usually spreading, 2-5 cm. long, 2 mm. wide; seeds 

 in two rows. Dry ledges: Que. Mich. Alta. Plain. My-Au. 



33. A. Bourgovii Rydb. Stem 3-6 dm. high; basal leaves oblanceolate, 

 finely stellate, almost entire, 2-4 cm. long; stem-leaves lanceolate, sagittate at 

 the base; petals pink, 8 mm. long; pedicels spreading, 5-7 mm. long; pods some- 

 times pendulous, 4-8 cm. long, 2 mm. wide; seeds more or less in two rows. 

 Turritis patula Grah. A. dacotica Greene, small form. Meadows and hills: 

 Man. Wyo. Ida. Alta. Plain Submont. Ap-Jl. 



34. A. Selbyi Rydb. Perennial, with a basal rosette of leaves; these ob- 

 lanceolate, 5-10 cm. long, short-petioled, acute, sinuate-denticulate, green but 

 stellate on both sides; stem-leaves linear-lanceolate, sagittate at the base; petals 

 red-purple; fruiting pedicels 3^4 mm. long, divergent; pods divergent, about 3 

 cm. long and 2 mm. wide, obtuse at both ends; seeds in two rows. Canons: 

 Colo. Mont. 



35. A. Stokesiae Rydb. Biennial; stem 5-7 dm. high, retrorse-pubescent 

 below; basal leaves oblanceolate, 2-3 cm. long, finely stellate; stem-leaves lance- 

 olate, sagittate at the base, 4-7 cm. long, glabrous; petals pink or purple; pedicels 

 spreading, 7-10 mm. long; pod glabrous, 2 mm. wide. Canons and hills: Mont. 

 Utah 'Ida. Son. 'Submont. My-Je. 



