157 



Erysimum asperum, D. C. Abundant on the high prairiee to 

 Fort Pierre and Fort Union. 



Erysimum cheircmthoides, Linn. Yellowstone and Bad Lands. 



Stanleya pinnatijida, Nutt. Abundant on the marl banks near 

 Niobrara river, Fort Pierre, rarely on the Yellowstone. 



Stanleya infegrifolia, James. Dr. Gray thinks it is a different 

 form of last species. 



Vesicaria ludoviciana, D. C. Sterile hills, Fort Pierre, and 

 Yellowstone. 



Vesicaria alpina, Nutt. Same as preceding. 



Vesicaria didymocarpa, Hook. Bad Lands. 



Sinapis nigra, Linn. About old houses and cultivated fields, 

 Council Bluffs, and Fort Pierre. 



Capsella hursa-pastoris, Linn. Same as preceding. 



Draha micranfha, Nutt. Bad Lands. 



Draha Caroliniana, Walt. Council Bluffs. 



Draha hrachycarpa, Nutt. Lower Missouri. 



Lepidium ruderale, Linn. Along Missouri to mountains. 



Lepidium Virginicum, Linn. Fort Pierre and Yellowstone. 



Cleome infegrifolia, Torr. and Gray. Bad Lands, Fort Union, 

 Yellowstone, Bad Lands of Judith, Platte valley, Fort Lara- 

 mie, and not a generally diffused plant, but growing abun- 

 dantly in localities. 



Polanisia unigland ulosa , Gray. First seen on gravelly hills 

 about Fort Pierre; also on Loup Fork. 



Viola, palmata, Linn. Fort Pierre. 



Viola cucidlata, vSit. Fort Pierre. 



Viola Nuttallii, Pursh. Bad Lands. 



Viola Canadensis, Linn. Fort Pierre. 



Viola tricolor, Linn. Council Bluffs. 



Viola delphinifolia, Nutt. Prairies around Council Bluffs. 



Silene antirrhina, Linn. Council Bluffs. 



Silene steUafa, Ait. Dixon's Bluffs. 



Ahine Michauxi, Fenzl. Mouth Big Sioux. 



Cerastium nutans, Raf. White river. Bad Lands. 



Cerasfium arvense, Linn. Council Bluffs. 



Moehringia lateriflora, Linn. Along Missouri to Council Bluffs. 



Paronychia sessiliflora, Nutt. Fort Union, Laramie Peak, 

 Black Hills. 



77. Stellaria longip)es, Goldie. Council Bluffs. 



78. Fortulaca oleracea, Linn. On saline clay soil, Teton river, 



near Fort Pierre; also near base of Black Hills, (indigenous.) 



79. Claytonia Virginica, Linn. Rocky woods, as high up the Mis- 



souri as Council Bluffs. 



80. Ahutilon avicennae, Gaertn. Naturalized near Council Bluffs. 

 SI. Malvastrum coccineum, Gray. Makes its appearance on the 



Missouri about latitude 43'-', and continues to the mountains. 



82. Tilia Americana, Linn. Abundant to Big Sioux; seen sparingly 



to mouth of Niobrara, where it ceases. 



83. Linum rigidum, Pursh. Throughout the prairie portion of the 



upper Missouri. 



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