TETRABTNAMIA. SILICiUOSA. 6T 



>^tigma entire. Ca//oU partly gaping. *' K gland 

 situated between each of the shorter stainina 

 and the calix." Smitm. 



Leaves simple, ternute, pinnatificl or imperfectly pin- 

 nate. In some ot'tlie species there is occasionaliy an abor- 

 tion oi' petals or of 2 of the siamina 



Species. 1. C. spathulata. 2. fere^. 3- virginica. 4- 

 miiflora. 5. pennsylvamcU' 6. praftffipif. In Labrador. 7. 

 7rvi/ti/i,/a. Ph. Leaves tiipinnaiilitl, silique short. A Si' 

 Si/m!)}'iinn? 



Within its natural limits almost exclusively an Euro* 

 pean ijenus. 



459. BARBAREA. 12. Brown. Erysimum. L, 



*( Silique 4- sU\ei\-'M^c\i)\tti]. Cotyledones ac- 

 cumbent. *S'ce(/s in a single series. Calix evect. 

 Glands disposed at the internal base of the shor- 

 ter filaments." R. Brown, Hort. Kew. 4. p. 

 >09. 



Leaves lyrately pinnatifid; stem branched; flowers yel- 

 low, terminally racemose.. 



Species. l.B. vulgaris. Erysirnvm Burbarea. L. Hab. 

 Apparently indig-enous in the northern states. This spe- 

 cies, culled "Yellow Kocket," affords a fine double flow- 

 ;ered variety. — Of this .^einis there is only a second species 

 and both are indigenous to Europe. 



460. SISYMBRIUM. L. (Water Cress. Water 



Radish,) 



Silique terniinated by a short terete rostrum, 

 valves nearly straight, not elastic. Calix and 

 Gorolla spreading. 



Leaves mostly pinnatifid, pseudopinnate, or compound- 

 ed; flowers axillary and solitary, but more commonly in 

 simple or paniculated racemes. Silique ovate, in .S. atn- 

 phiiium almost similar to the silicle of some species of 

 Cochleanuy in many others also short. Flowers often yel- 

 low. 



Spictes. 1. S. jVaseuriium. Truly indigenous. Abun- 

 dant on the margins of ditches and spongy springs ia 

 Long Island near New York, &c. 2. palus'ire. o^a7BpkU 



