250 



REPORT OF THE 



Water cress. 

 Marsh cress. 



Lake cress. 



Horseradish. 



Toothwort, Pep- 

 pur root. 



Toothwort, Pep- 

 pjr-root. 



Spring cress. 



Cuckoo-flower. 



Common Bitter 

 cress. 



Rock cress. 



Rock cress. 

 Rock cress. 

 Sickle pod. 

 Tower mustard. 



Winter cress, 

 Yellow rocket. 



CRUCIFERffi!. 



Nasturtium officinale, R. "Br. 



Northfield, Ann Arbor, (Miss Clark). 



Nasturtium palustre, PC. 



Ann Arbor ; shore of Saginaw Bay. 



Nasturtium amphibium, R. Br. 



S. Michigan, (Wright). 



Nasturtium lacustre, Gray. (N. nafans — W.) 



S. E. (Univ. Herb). 



Nasturtium Armoracia, Fries. 



Ann Arbor; Pigeon river, IS June. 



Dentaria diphylla, L. 



Ann Arbor. 



Dentaria laciniata, Muhl. 



Ann Arbor; N. E. (Univ. Herb). 



Cardamine rhomboidea, DO. 



Ann Arbor. 



var. purpurea, Torr. 



Ann Arbor. 



Cardamine pratensis, L. 



Ann Arbor; S. W. (Wright); Livingston Co., (Miss Clark). 



Cardamine liirsuta. L. 



St. Helena I., L. Mich.. 20 Aug.; S. W. (Wright); Ann Arbor, (Miss 

 Clark). 



var. Virginica, Michx. 



Ann Arbor, (Miss Clark). 



Arabis lyrata, L. 



Sand Pt. Saginaw B., 17 June; S. E. (Wright); Mont Lake, (Miss Clark), 

 The specimens seen Jit Sand Pt. were the variety {Sisymbrium ara- 

 lidoides, Hook.) pjculiar to " Upper Michigan and northward." 



Arabis hirsuta, Scop. (A. sac/Wata. — W.) 



Middle I., L. Huron, 8 July; S. E. (Wright). 



Arabis laevigata, DC. 



Alpena; S. Michigan, (Wright). 



Arabis Canadensis, L. 



S. E. (Wright). 



Turritis glabra, L. 



Gros cap, L. Mich., 18 Aug. 



Turritis stricta, Graham. 



Stone I. , Saginaw B. , 16 June. 



Turritis brachycarpa, Torr. & Gray. 



Ann Arbor; Alpena; Ft. Gratiot, (Gray). 



Barbarea vulgaris, R. Br. 



Thunder B. Is.; St. Helena I.. L. Mich., in blossom hero 20 Aug., as it 

 was at Thunder B. July 7th. 



