246 MR. GEYER’S ROCKY MOUNTAIN PLANTS, 
July. (n. 96.) — A most distinct and well-marked spe- 
cies; the stems and midrib of the leaves almost white. 
The plant is everywhere quite rough and harsh, especially — 
the margins of the leaves and of the scales of the involucre. … 
The leaves are 3-nerved, the nerves become confluent within d 
the margin, so as to form two lateral nerves within the — 
margin and parallel to it. 
1. Balsamorhiza incana, Nutt.—Torr. et Gr. Am. 2. p. 301. 
Has. Open pine-woods on the ascent to the Nez Percez p 
highlands.—Radical leaves a foot and a half long. Root ^ 
thick; eatable. Scapes 1-2 feet high. June. (n. 419.) 4 
2. B. helianthoides, Nutt.—Torr. et Gr. Am. 2. p. 302. Espe- * 
letia helianthoides, Nutt. in Journ. Acad. Phil. 7. p.38 
É. 4. : 
Has. Stony plains and ridges, Missouri and Oregon terri- - 
tories. Root very long and thick; eaten by the natives. 
x Ma. (n. 521.) : 
1. Rudbeckia occidentalis, Nutt.—Torr. et Gr. Am. 2. P * 
- BIN. 
Has. In a narrow rocky ravine in the extensive pni * 
which separate the Spokan and Cœur d’Aleine mountai ii j 
rare. July. (n. 574.) | 
1. Helianthus petiolaris, Nutt.—Torr. et Gr. Am. 2. p- 319 
Has. Argillaceous bituminous hills of the Upp? Platte : nd 
in the adjacent sand-plains. July. (n. 22.) 
. H. rigidus, Desf.—Torr. et Gr. Am. 2. p. 322. 3 
ony elevated table-land, between Platte and 29 
Has. On a stony ridge of the hills of Upper I latte e, gr 
with. m umbellatum. ne (n. 204. d | 
