First Report on the Flora of IVyoining. 83 



Sisymbrium linifolium, Nutt. T. & G. Fl. i, 91. 



Abundant and of frequent occurrence on the plains and in the 

 foothills. Laramie, June 12, 1894 (No. 173); June 1895 (No. 

 1420). 

 Smelowskia calycina, C. A. Meyer, Ledeb. Fl. Alt. iii, 165. 



Very rare, found but once and then but a plant or two; Laramie 

 Hills, June 1893. 



Erisymum asperum Arkansanum, Gray, Man. Ed. 5, 69. 



This variety is of very frequent occurrence; in early summer it 

 forms a very conspicuous object on the sandy plains ?.nd hillsides 

 in Albany county. Table Mountain, June 2, 1894 (No. 87); Two 

 Bar Ranch on Blue Grass Creek, July 9, 1S94 (No. 377). 



Erisymum cheiranthoides, L. Sp. PI. 661 (1753)- 



Widely distributed but not particularly abundant; Sybille Creek, 

 July 8, 1894 (No. 404); South Pass, September i, 1894 (No. 1187), 

 and Cummins, July 30, 1895 (No. 1462). 



Erisyijium parviflorum, Nutt. T, & G. Fl. N. A. i, 95 (838.) E. mcon- 

 spicuinn. (Wats.) ^racM. 



Frequent; Laramie, June 20, 1894 (No. 221); Bacon Creek, 

 August 15, 1894, (No. 916). 

 Stanleya pinnatifida, Nutt. Gen. li, 71 (1818). S. pinnata, (Pursh) 

 Britton. 



Only occasionally, on dry gravelly banks; Little Laramie River, 

 June 6, 1894, by Mr. Houghton; Wood's Landing, July 31, 1895 

 (No. 1554). 

 Stanleya pinnatifida integrifolia, Robinson, Syn. Fl. i, 179 (1895). 

 This form much less common; stems numerous from a large 

 deep-set root; on the dry plains west of Laramie, August 26, 1895 

 (No. 1845). 

 Stanleya viridiflora. Nutt. T. & G. Fl. i, 98. 



Very rare, not found at all by the writer; collected at Wheatland, 

 June 16, 1892, B. C. Buffum. 

 Brassica campestris, L. Sp. PI. 666 (1753). 



Occasionally seen in waste places about town; Laramie, Septem- 

 ber 15, 1893. 

 Brassica sinapistrum, Boiss. Voy. Espagne, ii, 39 (1839-45). 



A single specimen from Centennial Valley, August 25, 1895 

 (No. 1876). 



