2.22 CRUCIFJERAE (MUgTARI^ rAMJLY,) 



,not differ from the species D. carolifiifma Walt, except i;^ t^e hispid silique.— 

 Throughout our range and eastward, to the Missot;ri. , [ inu'i 



5. Draba cuneifolia Nutt. T.& G. Fl. 1: 108. 1838. Low, usually less 

 than 1 dm. high: leaves clustered n^ax ,)the base, obovate to oblanceolate, 

 entire or few-toothed, loosely stellate -pubescent, acutish, 1-3, cm. long; 

 scapose stems, S9litary or few, usually loosely steUate-pubesoent: flowers 

 small, t^hite: silique Unear-oblong, mostly subacute, minutely hispid, 8-10 

 mm. longj on divaricate pedicels much' shorter. (D. coloradensis Rydbi-.Bull. 

 Torr. Bot. Club 31: 555. 1904.) — Infrequent; from Missouri to California. 



6. Draba, reflexa Greene, Pitt. 4: 20. 189,9,, Stem stout, erect, about 1 dm. 

 high, racemose almost from, thebase: leaves mostly in a dense rosiUate basal 

 tuft, pblong-lancQolate, entire or sparingly toothed, nearly glabrojis super- 

 ficially, but the margin hirsute-ciliate: calyx glabrous, the thin, sepals tinged 

 with purple: petals white, showy: pedicels widely spreading, in .fruit de- 

 flected, much ' exceeding the pods in length, these elliptic-oblong, • 6-8 mm. 

 long, glabrous; the stigma small and sessile.— -Camj) Stambaugh, Wyoming,. 



7. Draba nemorosa L. Sp. Pl.,:643.;, 1763. Low slender loosely stellate- 

 pubescent annual, 5-30 om. high: stems simple or with a few short slender 

 branches from nea,r the base: leaves mostly towal'd the base but hardly ros- 

 ulate, ovate to bblong-lanceolate," entire or toothed, 1-3 cm. long: flowers 

 crowded, but the fruiting raceme long and open: sepals villous: pet^als yellow, 

 small: siliques'narrowly oblong, minutely pubescent, 8-12 mm. long, much 

 shorter than the slender spreading pedicels. D. nemorosp, and varieties. — 

 Colorado, north to Montana and thence both eastward and westward. 



8. Draba lapilutea A. Nels. Stellate-pubescent throughout and villous 

 below, 1-3 dm. high: stems erect, rather stout, simple or with some slenderer 

 branches from near the base: leaves oblanceolate or oblong to nearly linear, 

 mostly radical and on the lower part of the stem, 1-2 cm, long: petals small, 

 spatulate, yellowish or turning white in drying, longer than the elliptic sepals: 

 silique linear-oblong 8-12 mm. long, suberect, on much shorter spreading 

 pedicels; the s^yle wanting or barely discernible. D. montana (name un- 

 tenable. {D yellowstonensis A. Nets. Bot. Gaz. 30: 189. 1900, a name tabe dis- 

 carded.) — In the mountains; Colorado to Montana. ' I ■ 



9. Draba deasifoUa Nutt. T. & G, Fl. N.A. 1: 104. 1838. Densely .caespir 

 tose in somewhat close tufts: scapes only 3-6 cm. highj more or less woolly- 

 hirsute: leaves greatly crowded on the crowns of the caudex, oblong-Jinear, 

 strongly ciHate and woolly-hirsute ; with nearly simple hairs: flowers small, 

 yellow or turning white: sihques crowded at summit pf scape, broadly ovate, 

 pubescent, about 5 mm.. long;, the style abqut one fbjirth as long. D. veniqsa.i"!) 

 — Wyoming, Idaho, and Montana. ; , , 



10. Draba oligosperma Hook. Fl. Bor. Am. 1: 51. 1830. Subcaespitose,4he 

 leaves mostly rosulate at the base of the few short (4-8 cm. high) slightly 

 pubescent scapes: leaves suberect, linear or oblong, rigid, ciliate, stell^tsely 

 pubescent on both sides, especially toward the apex: petals white, twice as 

 long as the sligh^ily hairy calyx: sihques quite pubescent, suborbicular; the 

 style one fourth as long. — Northern Wyoming (prpbably), Montana, and. to 

 the north and west. 



11. Draba andina (Nutt.) A. Nels. Bull. Torr. Bot. Club 26: 352. 1S99. 

 Very densely cagspitose, the numerous branches of the caudex closely coverefi 

 with the persistent imbricated leaf-bases : leaves mostly oblong, rather rigid, 

 ciljate and stellate-pubescent: scapes glabrous, 3-8 cm. high: flowers numerous, 

 yellow or turning white: silique broadly ovate to orbicular, ,3-4,mrn,.longj; 

 the cells about 2-seeded; style short, about one fourth as long as the silique. 

 Possibly D. stellata and some; of its varieties.— Barren soils, mostly at high 

 elevations; Wyoming and northward. "■ 



12. Draba saximontana A. Nels. Bull. Torr. Bot. Club 27:, 264. 1900. 

 Much like the last, equally caespitose: leaves linear, ciliate and s^pllate- 

 pubescent: scapes numerous, glabrous, many-flowered: petals spatulate, 

 twice as long as the elliptic glabrate sepals: siliques ovate-oblong, suVa,C'Vite, 

 obscurely pubescent with simple hairs, 4^5 .mm. lopg,, ,6-8 times as lonlg as 



