CRUCIFERJE. (MUSTARD FAMILY.) 29 
9. DRABA, L. 
Silicle oblong or oval, flattened parallel with the broad partition. Seeds nu- 
merous in two rows in each cell, compressed, wingless. Cotyledons accumbent. 
— Small herbs with entire or toothed leaves, and yellow or white flowers in ter- 
minal racemes. 
| $1. DRABA. — Petals entire. 
1. D. brachycarpa, Nutt. Annual; minutely downy ; stems leafy, sim- 
ple or branched ; radical leaves round-ovate, stalked, those of the stem oblong- 
linear ; silicle oval, as long as the pedicel. — Middle districts of Georgia, in dry 
soil, and westward. March and April. — Stem 2/- 6 high. Silicle 2!! — 3" long. 
Flowers white. 
2. D. Caroliniana, Walt. Annual; stems leafy and hispid at the base, 
smooth above; leaves tufted, spatulate-obovate, hispid ; silicle "wem d 
two or three times as long as the pedicel. — Sandy fields, Georgia and no 
ward. February- uu Am — Stems 1'-3'high. Silicle 4-6" long. Flowers 
white. 
3. D. euneifolia, Nutt. Annual; leaves obovate, wedge-shaped, or the 
lowest spatulate, toothed ; raceme IET elongated in fruit (1^— 3/), at length 
equalling the naked peduncle; petals emarginate, much longer than the calyx ; 
silicles oblong-linear, minutely hairy, longer than the eee i venim — m 
Florida (Nuttall) and westward. - March. and April | i 
4. D. ramosissima, Desv. . |. Perennial ; S NECS didit, Jeaves 
linear-lanceolate or the lowest oblanceolate and crowded, coarsely toothed ; ra- 
cemes corymbose-branched ; silicle lanceolate, flat, twisted, hairy ; style lender. 
— Mountains of North Carolina and northward. April and May. — Stems 
4'-8'long. Flowers white. 
$ 2. EROPHILA. — Petals 2-cleft. 
5. D. verna, L. Stems naked, slender (2/-4! high) ; leaves radical, ob- 
long ; silicles oblong, smooth, shorter than the pedicels, scattered ; flowers small, 
white. — Waste places, chiefly in the upper districts. Introduced. (d). 
10. VESICARIA, Lam. 
Silicle globular and inflated, or more or less flattened parallel to the de 
partition ; the hemispherical or convex thin valves nerveless, Seeds few or sev- 
eral, flat Cotyledons accumbent. Filaments toothless.— Low herbs, pubescent 
or hoary with stellate hairs. Flowers mostly yellow. 
1. V. Leseurii Gray. Somewhat pubescent, but. green; stems dif- 
fusely ascending from a biennial root ; leaves oblong or oval, sparingly toothed, 
those of the stem half-clasping by a sagittate base; racemes elongated, many- 
. flowered; pedicels ascending; filaments inflated at the base; style. half a 
length of the hispid orbicular or broadly oval flattened silicle ; seeds w 
| gin oer duceret eon Nagy Oo, 
