WESTERN ASTER ACEAE. 9 



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upright, firm, green and glabrous like the stems, perfectly 

 entire : involucres small, campanulate, the bracts unequal and 

 in two ranks, densely glandular-scaberulous, acute : rays 

 neither numerous nor narrow, deep bluish-purple ; disk-flowers 

 also not very numerous. 



Clefts of rocks in Big Cottonwood Cation, Salt Lake Co., 

 Utah, 24 Aug., 1906, collected and communicated by A. O. 

 Garrett. Ambiguous as to the genus, the glabrous stems and 

 foliage and few broad rays recalling Aster; but the disk- 

 corollas, etc., are those of the genus Erigeron, 



Erigeron mendocinuS. Tufted and rigid perennial a foot 

 high, the stems decumbent at base, simple, leafy up to the 

 inflorescence of about 3 large heads; leaves spatulate-linear, the 

 lower and larger 2 inches long, acute, nearly glabrous except as 

 marginally beset with stiff hairs abruptly bent ujnvards from 

 the base : heads 1% inches broad from tip to tip of the rich 

 lilac rays; involucre broadly hemispherical, its bracts in about 

 3 series ; strigosely pubescent : achenes smooth, sparsely 

 strigose. 



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Big River, Mendocino Co., Calif., July, 1903, Jas, McMur- 

 phy, n. 353. An exceedingly showy and beautiful member 

 of that Californian group of Erigerons to which E. Hartwegi 

 and E, Breweri belong. 



Pyrrocoma calenduIvACEA. Stout, with several mono- 



cephalous bracted and subscapiform stems hardly surpassing 

 the foliage, the whole onl^^ 5 or 6 inches high : leav^es mostly 

 broadly oblanceolate, subspatulately tapering to a petiole, all 

 entire, of thinnish texture, glabrous or nearly so ; cauline 

 short, lanceolate, sessile, and like the upper part of the stem 

 more or less villous-arachnoid : involucres nearly hemispher- 



ical, ^ inch broad, not as high, bracts many but subequal, 

 oblong-linear, acute, wholly herbaceous and thinnish, hoarily 

 and somewhat viscidly villous, or in some specimens only 

 sparsely so ; rays many and showy, deep yellow. 



Alpine species of the Colorado mountains ; type from Union 

 Creek Pass, at 10.000 to 11,000 feet, by John Wolf, 1873. 



