140 Wyoming Experiment Station. 



Arnica latifolia, Bong. Veg. Sitch. 147. 



A beautiful subalpine species, probably in all of our mountains. 



Bald Mountain, B. C. Buffum, in August 1892; Union Pass, 

 August 11, 1894 (No. 836); noted in Medicine Bow Mountains. 

 Arnica longifolia, Eaton, Bot. King Exp. 186. 



Decidedly rare; Teton Mountains, August 21, 1894 (No. 957). 



Senecio amplectens taraxacoides, Gray, Proc. Acad. Phila. 67 (1863). 

 Very rare ; only a few specimens from the Teton Mountains, 

 August 22, 1894 (No. 987). 



Senecio aureus, L. Sp. PI. ii, 870 (1753). 



This and many of its varieties are well represented in our flora. 

 The individual variation is often so great that it is difficult to assign 

 some specimens to any of the numerous varieties already created. 



Specimens from Green River, August 26, 1894 (No. 1036), and 

 Wind River, August 10, 1894 (No. 760) I think are nearly typical, 

 as are also some from Beaver Creek and Laramie, by B. C. Buffum. 



Senecio aureus borealis, T. & G. Fl. N. A. ii, 442. 



On the rocky slopes of the Teton Mountains, August 21, 1894 

 (No. 979). 

 Senecio aureus croceus, Gray, Proc. Acad. Phila. 68 (1863) 

 This is a frequent form in subalpine meadows. 

 Union Pass. August 10, 1894 (No. 858); La Plata Mines, August 

 20, 1895 (No. 1753). 

 Senecio aureus obovatus, T. & G. Fl N. A. ii, 442. 



Typical specimens from Big Wind River, August 5, 1894 (No. 

 704); doubtful ones from La Plata Mmes, August 23, 1895 (No. 

 1769). 

 Senecio Balsamitae (?) Muhl. Willd. Sp. PI. iii, 1998 (1804). 



I think there is little doubt of the two sets of specimens before 

 me belonging here ; they lack the root leaves upon which the 

 description partly hinges, but seem normal otherwise. 



Eagle Rock Canon, August 2, 1892, B. C. Buffum; Cummins, 

 July 30. 1895 (No. 1492). 

 Senecio canus, Hook. Fl. Bor. Am. i, 333 (1834). 



This strongly marked species is of frequent occurrence in the 

 state. Our specimens are large, stoloniferous and slightly decum- 

 bent at base. 



