MUSTARD FA:\IILY 361 



26. 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 ^I. E. Jones. Dry hills: "Wyo, — Colo. — -Utah. Sub- 

 mont. My-Je. 



28. A. nigocarpa 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. — W3'0. Siibmoyit, — 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. Moim- 

 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 Hnear-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 Rvdb. 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, 4r-8 cm. long, 2 mm. wide; seeds more or less m two rows. 

 Turritis patula Grah. A. dacoiica Greene, small form. Meadows and hilJs: 

 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 m 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, 4r-7 cm. long, glabrous; petals pmk or P^iple; pedicels 

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



■Utah — Ida. Son, — Submont. My-Je. 



