COMPOSTT.E. (composite FAMILY.) iGo 



2. Tall,S to S feet /u'lj/i, paiiicit/ateli/ }>ol ncephalous : in low grounds and to the 



south. 



21. A. hesperius, Gray. From nearly glabrous ami smooth to scnbrou.s- 

 pubesient : leaves lanceolate, entire or the larger with a few ilenticulations, 

 2 to 5 inches long, 3 to 8 lines wide : heads rather crowded, 4 or 5 lines high : 

 involucre of narrowly linear or more attenuate erect bracts, either une(|nal and 

 imbricated, or with some loose and slender exterior ones whicli cciual the 

 inner: rays either wiiite or violet, 3 or 4 lines long — Synopt. Fl. i. l'J2. 

 S. Colorado and New Mexico to Arizona and S. California, lias been taken 

 for ^1. longifoUns, Novi-BeUjii, (cstivus, etc. 



c. Involucre loose and ivith conspicuous foliaceous outer bracts, which equal the 

 inner, either ascendim/ or s(/uarruse. 



2'2. A. foliaceus, Lindl. Smooth and glabrous, or upjter jiart of stem 

 ])ubescent : leaves from broadly lanceolate to oblong and the lower spatulato ; 

 ujjper cauline very commonly with partly clasping and sometimes even sub- 

 cordate -auriculate base: heads ^ inch high: involucre with lanceolate or 

 broadly linear outer bracts : rays violet or purple, in the larger heads nearly 

 I inch long. — In the Pacific States from California to Ala;ika, extending 

 eastward into our range under the following forms. 



Var. frondeus, (Jray. Stem simple or with sparing erect flowering 

 branches, sparsely leaved: leaves comparatively ample, 4 or 5 inches long; 

 lower tapering into winged petioles, upper often with clasping ba.se : heails 

 solitary or few, naked-pedunculate, broad : involucral bracts linear-lanceolate, 

 loose and not imbricated, all equalling the disk, occasionally the outermost 

 broader and leaf -life. — Synopt. Fl. i. 193. A. adsrendens, var. Parn/i, Eaton. 

 Subalpiue, from tlie borders of British Columbia to those of Colorado. 



Var. apricus, Gray. Like a dwarf state of the preceding variety, growing 

 in exposed places, somewhat rigid, thicker-leaved : stems ascending from 

 tufted rootstocks, a span or two high, bearing solitary or 2 to 3 broad heads : 

 involucral bracts all alike, somewhat spatulate-linear, obtuse or acutish : rays 

 "deep blue-violet and reddish-purple intermixed." — Log. cit. High moun- 

 tains of Colorado, and in AVashington, 



Var. Parryi, Gray. Includes some ambiguous forms, seemingly between 

 the preceding variety and ^4. Frenionti, with stems a span to a f(H)t high, with 

 smooth and thickish rather large leaves, mostly naked heads ; the involucre 

 sometimes foliaceous-bracteate in the manner of the present species, some- 

 times wholly of the narrow and closer bracts of .1. Fremont i. — Loc. cit. 

 Mountains of Colorado, sul)al])ine, and S. Wyoming. 



Var. Burkei, Gray. A foot or two high, rather stout, simple or branched 

 above, leafy to the top: leaves thickish, very smooth, ample ; upper cauline 

 mostly oblong, and with broadly half-clasping usually auriculate in-^sertion : 

 heads solitary or several, very broad : involucre of oblong or spatulate and 

 obtuse loosely imbricated bracts, the outer commonly shorter, or outer- 

 most sometimes more foliaceous and equalling the disk. — Loc. cit. Kocky 

 Mountains, Burke; also in Washington, the Wasatch, New Mexico, and 

 Arizona. 



Var. Canbyi, Gray. Like the preceding form in foliage, apparently t.all 

 and .stout (ba.'^e of stem and lower leaves wanting), leafy throughout the 



