CRUCIPER^. 251 



a slender style; cells 2-seeded.~ Sierra Valley, Lemrnon, and southward 

 along tlie borders of Nevada, in high mountains. Of this species we 

 find no mention made in Mr. Watson's recent account of the genus (1888). 



7. D. subsessilis, Wats. Proc. Am. Acad, xxiii. 25.5 (1888). Very 

 dwarf, the short branches of the caudex forming a broad mat, finely 

 stellate-pubescent: leaves oblong, obtuse, not ciliate: scapes very short; 

 fruiting raceme about 1 in. long: petals small, white, scarcely exceeding 

 the yellowish ovate sepals: pods broadly ovate-elliptical, 2 lines long, 

 short-pedicellate, pubescent; style very short and thick. — White Moun- 

 tains, Mono Co., at 13,000 ft. alt., Shbckley. 



8. D. Breweri, Wats. 1. c. 260. Biennial or perennial, densely stellate- 

 pubescent, the shortly branching caudex bearing leafy stems 1 — 3 in. 

 high : lowest leaves crowded, oblong or linear-oblong, obtuse, entire or 

 sparingly toothed, 2 — 4 lines long, sometimes ciliate at base; cauline 

 2 — 4, oblong-ovate: fl. small, white; sepals oblong, herbaceous: pods 

 linear-oblong, 2 — 3 lines long, obtusish, pubescent, short-pedicellate; 

 style very short or 0.~Mt. Dana, at 12,000 ft., Brewer, and on the White 

 Mountains, ShucMey. 



9. D. glacialis, Adams, Mem. Soc. Mosc. v. 106; DC. Syst. ii. 338 

 (1821). Dwarf and cespitose: leaves all in a rosulate tuft, linear-lanceo- 

 late, entire, rigid and carinate, more or less densely stellate-pubescent, 

 sometimes ciliate at base: scape with few not small yellow flowers: pods 

 ovate to ovate-oblong, acute, usually pubescent; style very short. — Not 

 rare in the higher Sierra; readily identified by the linear rigid carinate 

 leaves. 



5. HETERODRABA, Greene. Slender diffuse annual, leafy only 

 near the base, the elongated branches unilaterally racemose throughout. 

 Leaves simple, toothed. Sepals equal. Petals without claw. Stamens 

 6 but equal, 3 on either side of the orbicular compressed ovary. Pod 

 several-seeded, 2-celled by a very thin and filmy partition, indehiscent. 

 Cotyledons accumbent. 



1. H. uuilateralis, Greene, Bull. Calif. Acad. i. 72 (1885); M. E. 

 Jones, Bull. Torr. Club, ix. 124 (1882), under Braha. Pubescent with 

 rigid short branching hairs : leaves cuneate-obovate, coarsely few-toothed 

 above the middle, K2 — 1 ^^- long: branches horizontal and trailing or 

 jj rostrate, H — 2 ft. long, in age rigid and wiry: pods on short rigid 

 deflexed pedicels, 2 lines long, l^.j lines wide, stellate-pubescent and 

 hispidulous, twisted when mature. — Abundant in fields among growing 

 grain, from Colusa Co. southward along the bases of the mountains to 

 the San Joaquin and Livermore valleys; also in Lower California, where 

 it was first detected by Mr. Jones. An interesting plant of early spring, 



