20 BOTANICAL OBSEBVATIONS IN WESTERN WYOMING. 
not materially different from other districts passed over in our 
‘ previous route. Of plants not elsewhere noticed may be men- 
tioned Spheralcea acerifolia Nutt. and Rudbeckia occidentalis 
Nutt. Near the summit of the high rocky peak overlooking Snake 
and Wind River valleys was found a new species of Draba char- 
acterized by Dr. Gray, under the name of Draba ventosa n. sp. 
(see Appendix, No. 15) : also Aster montanus Rich, the latter only 
known from high northern collections in British America. 
From this accessible pass, by which the Yellowstone Park can 
be reached on a very direct route, we passed rapidly down the open 
valley of Wind River and reached our previous rendezvous at 
Camp Brown, on September 12th, after just two months’ absence. 
(180) 
