72 FLORA OF MICHIGAN. 



*68. C. prateiisis, L. Cuckoo Flower. Th. 



Bogs. Rare S., frequent in C., and common N. 



*69. C. hirsuta, L, Small Bitter Cress. Th. 



New Buffalo, Wheeler; near Black lake, Cheboygan county, B. & K. ; Keweenaw county ,F. 



36. ARABIS, L. ROCK CRESS. 



*70. A. hirsuta, Scop. Th. 



Piiver banks. Infrequent. 



*71. A. laevigata, Poir. Th. 



River banks. Infrequent. 



*72. A. Canadensis, L. Sickle-pod. 



Fields and rocky woods. Not common. 



* 73. A. perfoliata, Lam. Tower Mustard. Th. 

 Fields. Infrequent. 



74. A. confmis, Watson. 



Dry banks. Hubbardston ; Flint ; Macomb Co.; etc. Keweenaw Co., F. Not common. 



75. A. lyrata, L. Th. 



Sandy fields, Hubbardston. So. Haven; Flint; Petoskey; U. P., Whitney Cat. Infrequent. 



*76. A. dentata, T. & G. C. &. S. 



Low lands along Grand river and southward. Not common. 



37. DRABA, Dill. WHITLOW-GRASS. 



77. I>. iiicaiia, L., var. arabisans, Watson. 



Shores of the Gr. Lakes. Mackinac, G. H. Hicks. Infrequent. 



78. D. Caroliiiiaiia, Walt. C. & S. 



Ionia Co. and southward. Rare. 



*79. D. nemorosa, L. 



" Fort Gratiot and northwestward." Gray. Collected by Dr. Pitcher. Infrequent. 



80. D. VERNA, L. Whitlow-Grass. S. 



Agricultural College grounds; Detroit, Dr. Lyons. Rare. 



38. AL.YSSUM, Tourn. 



*81. A. CALYCINUM, L. 



Hubbardston, Ionia, Flint, Lansing, etc., a recently introduced plant, becoming common in many 

 localities. Door-yards and waste places. 



39. CAMELINA, Crantz. FALSE FLAX. 



82. C. SATIVA, Crantz. Th. 



Road-sides and waste places. Flint; Ann Arbor; Macomb Co.; Sturgis; Keweenaw Co., F. Not 

 common. 



4O. NASTURTIUM, R. Br. WATER-CRESS. 



* 83. N. OFFICINALE, R. Br. True Water-Cress. 

 Ionia; Ann Arbor; South Haven; etc. Frequent in brooks. 



84. N. obtusnin, Nutt. 



Keweenaw Co., F. 



* 85. N. palustre, DC. Marsh Cress. Th. 

 Frequent. 



* 86. var. hispidum, Fisch. & Meyer. Th. 



87. N. lacustre, Gray. Lake Cress. C. & S. 



From Fish Cr. and Maple R. southward. Infrequent. 



