390 C M P O S I T .E. 



the Sierra from Truckee River southward. Very distiuct from E. 

 concinnus, not growing with it, but of decidedly its own and a more 

 southerly geographic range. July, Aug. 



16. E. fllifolins, Nutt. Trans. Am. Phil. Soc. vii. 328 (1840). Canes- 

 cent or cinereous with very fine close pubescence, without hirsute hairs: 

 stems often 1 ft. high, the base subligneous: leaves long and linear- 

 filiform or quite filiform, the lowest dilated upward: involucre canescent: 

 rays 50 — 80, white to violet: pappus simple. — In Plumas Co., Lemmun, 

 and far northward. 



17. E. peucephyllus, Gray, Proc. Am. Acad. xvi. 89 (1880). Tufted 

 stems branching, very leafy at base, the subscapiform peduncles with 

 only 2 or 3 heads, or even monocephalous: leaves almost filiform, cine- 

 reous-i:»ubescent: involucre hirsute-pubescent: rays 30 — 40, pale blue or 

 purplish, rather short: pappus conspicuously double, the outer squam- 

 ellate. — In half desert regions east of the Sierra, on the northeastern 

 borders of our district. 



* * Luiv tufted perennials; peduncles slender, nearlij leajhss, scape-like 

 and rnonocephalous. 



■i— Leaves narroio and entire. 



18. E. pygmaeus. E. Nevadensis, var. pygmxus, Gray. Dwarf and 

 cespitose, the long tap-root surmonnted by a stout much branched and 

 half subterranean caudex: the tufted leaves cinereously strigose, less 

 than 1^ in. long, oblauceolate: scapes slender, scarcely 1 in. long: bracts 

 of involucre unequal, not numerous, nor more pubescent than the 

 foliage: rays 20—30, not very narrow. Alpine summits of the Sierra. 

 Aug., Sept. 



19. E. eleg'autulus, Greene, Eryth. iii. 65 (1895). Stems densely 

 cespitose, the short whitish branches thickly beset with narrowly linear 

 strigose-pubescent leaves 1 in. long or more: peduncles slender, 2—3 in. 

 high, leafy-bracted toward the base: heads 3 lines high; bracts of invo- 

 lucre in 2 series, the outer one-third shorter: rays 20—30, violet: pappus 

 dull-white, simple, merely scabrous. -Dixey Valley. Lassen Co. Babr 

 .fc Nutting. 



20. E. ursinus, Eaton, Bot. King Exp. 148 (1871). Loosely cespitose: 

 herbage dull-green, mostly glabrous, or the margins of the spatulate or 

 oblanceolate leaves hirsute-ciliate: scapes 3 — 8 in. high, leafy-bracted 

 below : involucre I4 in. high, almost hemispherical, its bracts subequal. 

 hirsute-pubescent : rays 40 50, rather liroad, deep violet, ur more 



