14 



MICHIGAN FLORA. 



Hairy Rock 

 C. 



Smooth Rock 

 C. 



Canada Cress. 

 Sickle-Pod. 



Tower Mus- 

 tard. 



Drumraond's 

 M. 



Yellow Rock- 

 et. Winter 

 Cress. 



68. hirsuta, Scop. 



69. laevigata, Poir. 



70. Canadensis, L. 



Fields and rocky woods. 



71. perfoliata, Lara. 



72. Drumraondii, Gr. 



Hubbardston(!); Flint; Macomb Co. ; etc. Dry banks. 

 BARBAREA 



73. vulgaris, R. Br. 



Th. 



Frequent. 



Th. 



Infrequent. 



c. &s. 



Common. 



Th. 



Not rare. 



Th. 



Not com. 



Th. 



So. Haven; Ann Arbor— Allmendinger Cat.; Macomb Co.; Hubbardston(J); 

 and N. into the U. P., where it is indigenous and frequent. 



White Mus. 

 tard. 



Charlock. 



Black Mus- 

 tard. 



Sea Rocket. 



Shepherd's 

 Purse. 



Spring Cress. 



BRASSICA 



74. alba, Gr. (*) 



75. Sinapistrum, Boiss. 



76. nigra, Koch. (*) 



CAKILE 



77. Americana, Nutt. 



Shores of the Gr. Lakes. 

 CAPSELLA 



78. Bursa-pasfcoris, Moench. 



The commonest of weeds. 

 CARDAMINE 



/-*** \ 



c. &s. 



Infrequent. 



Th. 



Not com. 



0. &s. 



Common. 



Th. 



Common. 



Th. 



Purple Spring 

 C. 



Cuckoo 

 Flower. 



Small Bitter 

 Cress. 



Woodland B. 

 C. 



Crinkle-root. 

 Pepper-root. 



Tooth-wort. 



Whitlow- 

 grass. 



Whitlow- 

 grass. 



Whitlow- 

 grass. 



Whitlow, 

 grass. 



