30 CRUCIFERJE. (MUSTARD FAMILY.) 
ll. CAMELINA, Crantz. 
Silicle ovoid or pear-shaped, flattened parallel to the broad partition ; valves 
I-nerved. Seeds numerous, oblong. Cotyledons incumbent. Style slender. — 
Flowers small, yellow. 4 
1. C. sativa, Crantz. Leaves alternate, sagittate ; silicle large. — Fields, 
North Carolina, and northward. Introduced. @. 
12. SENEBIERA, Poir. 
Silicle didymous, compressed contrary to the narrow partition ; the cells glob- | 
ular, 1-seeded, crested or pitted, indehiscent, at maturity separating from the par: 
tition. Cotyledons incumbent. — Annual or biennial diffuse strong-scented herbs, 
with pinnately lobed or divided leaves, and minute white flowers, in short ra- 
cemes, opposite the leaves. Stamens 2, 4, or 6. : 
1. S. pinnatifida, DC. Stem prostrate; leaves deeply pinnatifid, with 
the numerous lobes toothed on the upper edge ; silicle pitted, emarginate at both 
ends. — Waste places, Florida to North Carolina. March - May. — Racemes | 
many-flowered. d : 
2. S. Coronopus, Poir. Stem prostrate; leaves deeply pinnatifid, with | 
the lobes entire, toothed, or pinnatifid; silicles not emarginate, the margins - 
crested. — Waste places. Introduced. March and April. 
13. LEPIDIUM, L. Pzrrrncnass. 
Silicle rounded or obcordate, compressed contrary to the narrow partition ; 
valves carinate : cells 1-seeded. Cotyledons accumbent and incumbent. Petals 
sometimes wanting. Stamens 2, 4, or 6. — Leaves entire, toothed, or pinnately 
divided. Flowers minute, in terminal racemes. _ 
1. L. Virginicum, L. Smooth; stem erect, much branched ; leaves 
lanceolate, sharply toothed, the lowest tapering and mostly pinnatifid toward the 
base; silicle orbicular, wingless ; cotyledons accumbent ; stamens mostly two. 
— Waste places, very common. March-June. @— Stem 19 - 29 high. 
14. CAPSELLA, Vent. SHEPHERD’S PURSE. 
Silicle triangular-wedge-shaped, flattened contrary to the narrow partition, 
many-seeded ; valves wingless. Cotyledons incumbent. — An annual herb, 
with the radical leaves clustered and pinnatifid ; those of the stem clasping and 
often entire. Racemes elongated. Silicle shorter than the spreading pedicel. 
Flowers whit à m 
1. C. Bursa-pastoris, Mench.— Waste ground, Florida and northward. 
March and April. Introduced. __ i : ; 
