148 BOTANY. 



linear, in two rows, outer ones herbaceous, inner ones with somewhat scarious 

 narrow margins and long slender tips ; rays many, twice as long as the 

 involucre ; achenia hirsute ; pappus of 12-15 bristles as long the disk- corollas, 

 besides an evident outer series of minute setae. — Greenland and Arctic 

 America to California and Colorado. Uintas, near Bear Eiver; 9-12,000 feet 

 elevation; August. (529.) 



Var. DiscoiDEUM, Gray. Sill. Journ., n. s., 33. 8. Kays none, or some- 

 times present, but shorter than the flowers of the disk. — Colorado, (Parry,) 

 and California, (Bolander.) Higher peaks of Nevada and Utah; 8,500- 

 10,000 feet altitude ; June-September. (630.) 



Eeigekon Bloomeei, Gray. Proc. Amer. Acad., 6. 540. Perennial; 

 caudex much branched from a deep fusiform root; stems 3-8' high, leafy 

 below, naked for several inches below the solitary heads ; leaves narrowly 

 hnear, almost filiform, 1-3' long, less than a line wide, somewhat cinereous, 

 like the stems, with a fine appressed pubescence ; involucre woolly-pubescent, 

 the scales in a single series, about as long as the disk; rays none ; achenia 

 flat, rather narrow, finely hirsute towards the summit ; pappus simple, the 

 bristles shorter than the corolla. — Near Carson City, (Anderson,) and near 

 Virginia City, (Bloomer.) Western Nevada to the East Humboldt Moun- 

 tains; 5-8,000 feet elevation ; May-July. (531.) 



Erigeeon grandifloeum, Hook. Perennial, hirsute and somewhat 

 woolly ; stems 1-5 in number, 4-8' high, rather leafy; radical leaves obovate- 

 spatulate, lj-2' long, 4-5" wide, those of the stem smaller and lanceolate ; 

 heads large for the plant ; involucre very woolly ; the scales herbaceous, 

 elongated, with naked purplish tips ; rays long and broad, white or purple ; 

 achenia sparingly hirsute ; pappus of barbellate setae rather shorter than the 

 disk-corollas, and with a few very short ones intermixed. — Rocky Mountains 

 of British America. On a ridge above Bear River, Uinta Mountains ; 

 11,000 feet elevation; specimens exactly like the figure in Hooker's Fl. Bor. 

 Amer., t. 123. (532.) 



A smaller form, the leaves narrower, and the heads only half as large, 

 but in all other respects like the type, was also collected on the Uintas near 

 Bear River, elevation 11-12,000 feet. The same form, probably, was found 

 farther north in Palliser's Expedition ; See Pallis. Rep. p., 263. (533.) 



Erigeeon uesinum. Perennial, ceespitose; stems hirsutulous, 4-7' 



