of the Rocky Mountains. 5 
rock cre 
plants of this district, including Aquilegia brevistyla, Viola biflora, 
a variety of fibes lacustre, Senecio Fremontit, Oxyria reniformis, 
Polygonum Bistorta, &c. 
rude blasts that sweep over these bald exposures. Affecting 
similar situations we meet with an alpine Synthyris, (255,) with 
its glossy foliage and neat spike of pale blue flowers. 
On the sammit of the crest, which here presents a flattened 
irregular surface, composed of weather-worn rocks imbedded in 
the coarse debris of its disintegrating granitic masses, we find 
notus pygmeus, Papaver nudicaule, Saxi- 
Yolia, Gentiana frigida, and others, all indicative of 
