TtTRADYNAMlA SILOCUtOSA. 139 



(Sro\rs in sandy soils, James' Island, St. Johns's Berkley, Augusta* 

 •Flowers in February^ March. 



CORONOPUS* G^RT. 



Silicula reniformis^ [ Pod reniforin,*com- 

 compressa, corrugata; pressed, corrugate ; 

 loculis evalvibus^nion- 

 ospermis. 



. DiDYMA. 



C siliculis emargi- 

 natisjclidymis^reticiila- 

 to-rugosis; stylo ob 



cells one seeded^with- 

 oiit valves. 



soleto; corymbis mul- 

 lifloris. I 



Pods emarginate,in 

 pairs, reticulate, ru- 



;ose ; 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. sr* 



JRoo/ fibrous, in our climate almost perennial. Stem brandling, pros*- 

 tratCj 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 iii 

 ffiost of this class increasing in length after flowering, and forming ra- 

 cemes wlien in fruit. Calyx 4-lcaved, leaves lanceolate, acute, gla- 

 brous, 2 appressed, the othefs 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 butten 

 a disagreeable flavor. 



Flowers from February to July. jPrpjPer Grass. 



2. RuELLII. 



C siliculis inteorris I Pod entire, with a 



*_, * v.v» v^miiv,, 



eristato-muricatis; sty- | muricated margin ; 



