252 MR. GEYER S ROCKY MOUNTAIN PLANTS. 
is very long and floccose, almost like spider’s web. May: 
(n. 297.) 
2. S. fastigiatus, Nutt.—Torr. et Gr. Am. 2. 439. 
Has. Rocky borders of Spokan and Columbia Rivers; not - 
very common. Stem and leaves purplish-glaucous p 
August. (n. 575.) 
3. S. hydrophilus, Nutt.—Torr. et Gr. Am. 2. p. 410. : 
Has. Fertile sunny deep grassy borders of Black's Fork of 
Upper Colorado, near Fort Vasco; rare. Stems hollow, 
two feet high. August. (n. 250.) 
4. S. Serra, Hook. Fl. Bor. Am. 1. p. 332. Torr. et Gr. Àm. 
3. p. 441. S. longidentatus, DC. Prodr. 6. p. 418. : 
. Han. Rich meadows, valleys of Kooskooskee and Spokan 
Rivers. Two to three feet high; many stems rising from 
one root. July. (n. 473.) : 
5. S. rapifolius, Nutt.— Torr. et Gr. Am. 2. p. 441. 
Han. In the fissures of the granite mountains of Swet 
Water River; rare, except at Fort Independance, where i 
occurs with FREE (n. 7.) Leaves purplish. (ne 
= Qj - | 
= 6. S. aureus, L.—Hook. Fl. Bor. Am. 1. p. 333. Torr. 
.. —Gr. Am. 2. p. 442. var. e PME, Torr. ees 8. 
: samite, Muhl. 
Has. Var. s. Grassy spots in the s stony gers of 
= Water River. July. (n 202.) — = 
S. canus, Hook. Fl. Bor. Am. 1. 1. p.38 
