MONADELPHIA. DECANDRIA. 57 



310. Lepidium. L. Pepper-wort. 



Virginicum. L. Sandy fields. £>. June — Oct. white. 



SILIQUOSA. 



311. Dextaria. L. Toothwort. 

 1 laciniata. Willd. 



concatenata. Mx. 

 On the hills at Hoboken. u April 23d — May. purple. 



312. Cardamixe. L. American water cress. 



1 Virginica. L. On rocks in Bloomingdale woods, y. 



May — June, wliite. 



2 Pennsylvanica. Willd. (Penusylvanian water cress- J — 



Ditches and overflowed grounds. U- May — July, 

 white. 



313. Sisymbrium. L. Watercress. 

 amphibium. L. In overflowed and Low boggy grounds. 



Bcllevue. U- June, yellow. 



314. Erysimium. L. Hedge mustard. 



officinale. L. Old fields and road sides. $. June — 

 Oct. yellow. 



315. Arabis. L. Wall cress. False tower-mustard. 



1 thaliana. Willd. Ou the sides of rocky hills. Hoboken. 



0. June, white. 



2 lyrata. L. Rocks about Bergen. $. April — July. 



white. 



3 hastata. 

 pendula. Nutt. ? 

 Turritis laevigata. Willd. 



On rocky hills, in shady situations. %. June, white. 



4 falcata. Mx. 

 Canadensis. L. 



Hills among rocks. Manhattanville and Hoboken. 2*. 

 June, white. 



5 bulbosa. Muhl. Cat. ("Spring cresses. J 

 rhomboidea. Pers. 



Fn low wet grounds, if. May, June, white. 



6 hiisuta. Brown. 

 Turritis hirsuta. Willd. 



ovata. Ph. ? 

 On the sides of hills. $ . ? June. July — white. 

 M6. Sixapis. L. Mustard. 



nigra. Sm. In fields. © . July— Oct. yellow. §• 



DECANDRIA. 



Sir. Geranium. L. Cranesbill. 



1 maculatum. L. (Crow-foot. Mum-root J Woods and 

 among bushes, if. Mav 5th, Jul v. purple. 



