TETRADYNAM1A SILOCULOSA. 
139 
Grows in sandy soils. James 7 Island, St. John’s Berkley, Augusta. 
Flowers in February, March. 
CORONOPUS. G*rt. 
Silicula reniformis, 
eompressa, corrugata; 
loculis evalvibus,mon 
ospennis. 
1. Didyma. 
C. siliculis emargi- 
natis,didymis,reticula- 
to-rugosis; stylo ob- 
solete; corymbis mul- 
tifloris. 
Pod reniform, com- 
pressed, corrugate ; 
cells one seeded, with- 
out valves. 
Pods emargmate,m 
pairs, reticulate, ru- 
gose ; style obsolete ; 
corymb many flower- 
ed. 
Pursh 2. p. 435. Nuttall 2. p. 64. 
Lepidium didymum. Sp. pi. 3. p. 439. 
Biscutella apetala. Walt. 174. 
Cochlearia humifusa. Mich. 2. p. 27* 
Root fibrous, in our climate almost perennial. Stem branching, pros- 
trate, 1 to 2 feet long, a little hairy. Leaves alternate, sessile, glabrous, 
pinnatifid ; the segments linear lanceolate, sometimes toothed, mucron- 
ate. Flowers in small corymbs opposite the leaves. The Rachis as in 
most of this class increasing in length after flowering, and forming ra- 
cemes when in fruit. Calyx 4-leaved, leaves lanceolate, acute, gla- 
brous, 2 appressed, the others expanding, all somewhat persistent but fal- 
ling before the fruit matures. Corolla 0. Filaments 2 fertile, subulate, as 
long as the calyx, 4 sterile, 2 at the base of each fertile filament. An- 
thers incumbent, erect. Germs supeiior, compressed, orbicular. Style 
none. Stigma sessile. Pod 2-lobed, emarginate at each end, without 
valves. Seeds 1 in each cell. 
Grows very common in open grounds and pastures, is eaten freely 
by cattle early in the spring and communicates to their milk and butter* 
a disagreeable flavor. 
Flowers from February to July. Pepper GrasSo 
2. Ruellii. 
C. siliculis integris Pod entire, with a 
eristato-muricatis; sty- muricated margin 
