kropmila. CRUCIFERiE. 53 



DBABA. 



lines long: flowers small, in slender racemes, the white or pale yellow 

 petals but little exceeding the short sepals : pods orbicular, with a thin 

 margin, slightly emarginate, 1% lines in diameter, a little exceeding the 

 persistent sepals, pubescent, 4-8 seeded, on spreading pedicels a line long: 

 style half a line long. A native of southern Europe sparingly introduced 

 at Seattle Washington and the eastern states. 



***** Pods oblong elliptical or ohlanceolate rarely linear 

 ^-several-seeded. Stamens unappendaged. 



16 EROPHILA DC. Syst. ii, 356. 



Stellate-pubescent gcapose winter-annual with entire or coarsely 

 toothed leaves and white flowers in very early spring. Sepals 

 equal at dase. Petals 2-lobed or 2-partecl. Style short or none. 

 Pods oblong, compressed, with membranaceous convex 1-nerved 

 valves. Seeds numerous in 2 rows in each cell. 



E. vulgaris DC. 1. c. Drab! tenia L. Sp. ii, 642. Scapes naked, 1-6 

 inches high, filiform : leaves lai eolate, somewhat toothed : pods glabrous, 

 round-oval to oblong, 1-4 lines iong, shorter than the spreading pedicels : 

 stigma nearly sessile. Introduced from Europe. Well established at Van- 

 couver Washington. 



17 DRABA Dill. Cat. PI. Giss. App. 122. L. Gen. n. 800. 



Low annual or perennial herbs with entire or toothed leaves 

 and white or yellow flowers. Sepals short and broad, equal at 

 the base. Petals commonly obovate, entire (rarely bifid). Fila- 

 ments mostly flattened, without teeth at the base. Anthers round- 

 ed or oval. Style short, or slender and somewhat elongated. 

 Stigma simple or very slightly lobed. Pod oval to oblong or 

 linear, flat, dehiscent. Seeds few-many, in 2 row r s, wingless. 

 Cotyledons accumbent or rarely incumbent. 



§ 1 Drabella, DC. Syst, ii, 332. 351. Stellate-pubescent or 

 more or less villous short caulescent and more or less leafy-stem- 

 med winter-annuals with ascending or spreading pedicels, entire 

 or emarginate petals and smooth seeds. 



* Flowers white : pedicels clustered or approximate at the end of the 

 stem or branches. Early spring species. 



1). Caroliniana Walt. Fl. Car. 174. Scape-like stems very slender, 

 often branched. 1-3 inches high, smooth; leaves obovate to oblanceolate, ob- 

 tuse, mostly entire, hispid with simple or branched hairs: pedicels very short: 

 pods clustered at the end of the stems, linear, 4-6 lines long, 20-30-seeded, 

 glabrous; stigma sessile. Under "Sage-brush" Umatilla Oregon to Ontario 

 > T ew England and Carolina. 



1). micrantlia Nutt. T. & G. Fl. i, 109. D. Caroliniana var. micran- 

 tha dray Man. 72. Stems leafy and hispid below, naked and smooth 

 above: leaves cuneate -obovate, hispid, entire: pods hispid, linear, much longer 

 than the pedicels. Open plains and rocky places, Klickitat Washington 

 to Illinois and Texas. 



* * Pedicels more remotely racemose. Flowers very small, 

 white. Stigma sessile or nearly so. 



1). brachycarpa, Nutt. T.&G. Fl. i, 108. Pubescent with minute 

 ftppveraed stellate Lairs: items simple or branehed, 



