146 COMPOSITE. (COMPOSITE FAMILY.) 



Var. foliosa, Eaton. Canescent with appressed sericeous pubescence, 

 mostly soft aud destitute of hispid bristles ; but stem often hirsute or villous : 

 leaves short, oblong or elliptical : heads small, rather numerous and clustered. 

 — Bot. King Exp. 164. Mountains of Wyoming to Utah and Arizona. 



Var Rutteri, Rothrock. Most like the preceding, equally sericeous- 

 canescent with usually longer soft hairs : heads of double the size, fully 

 ^ inch high and wide, solitary or few in a cluster, foliose-bracteate : rays 30 

 to 40, ^ inch long. — Wheeler Rep. vi. 142. S. Arizona; also Colorado, where 

 the leaves are slightly canescent. 



9. APLOPAPPUS, Cass. 



A large and polymorphous genus ; mostly herbaceous, some suffruticose : 



the flowers all yellow, aud occasionally rayless, thus making them undistin- 



guishable from the following genus. 



* Involucre of Jinn icell-imbricated or rigid bracts: rai/s numerous, several, or 



ivanting : pappus commonhj fuscous or rufous, and more or less rigid. 



•i- Heads rai/less: akenes senceous-canescenf : leaves coriaceous, dentate. 



1. A. Nutt^Uii, Torr. & Gray. Herbaceous from a woody stock, a span 

 to a foot high : leaves from spatulate-oblong to almost lanceolate : heads few 

 terminating the branches, one third inch high : involucre hemisplierical ; the 

 bracts with slightly spreading greenish tips. — From New Mexico and 

 Arizona to Idaho and the Saskatchewan. 



-V- -i- Heads conspicuoushj radiate, large and show)/: rays very numerous, J to 



I inch long: akenes wholly glabrous: leaves coriaceous, entire. 



•4-1- Stems equably and very leafy up to the sessile or subsessile heads. 



2. A. Fremonti, Gray. A foot or less high, simple or fastigiately 

 branched above : leaves lanceolate, 2 to 4 inches long, obscurely 3 to 5-nerved ; 

 lower narrowed and upper partly clasping at base: involucre (inch or less 

 high) broadly campanulate ; its bracts broadly lanceolate, conspicuously and 

 often cuspidately acuminate : rays ^ inch long : akenes obovate, striate-nerved, 

 almost as long as the rigid pappus. —Proc. Acad. Philad, 1863, 65. Colorado. 



Var. Wardi, Gray. . Dwarf, fascicled stems only a span high: leaves 

 proportionally small, linear-lanceolate, destitute of lateral nerves : heads 

 one-half smaller, 2 or 3 in a terminal glomerule : akenes double the length 

 of the scanty pappus. — Synopt. Fl. i. 128. Wyoming, L. F. Ward. 

 ^.4. .^^ Stems simple, above ivith decreasing or sparse leaves and solitary or few 



naked and usually pedunculate heads, at base a tuft of ample lanceolate- or 



spatuJate-obJong radical leaves. 



3. A. croeeus, Gray. Stem stout and erect, commonly a foot or two 

 high, and with radical leaves afoot or less long (including the petiole) : cauline 

 leaves ovate-oblong to lanceolate, partly clasping : head mostly solitary : invo- 

 lucre a fiiil inch in diameter ; its bracts ovate to spatulate-oblong, very obtuse, lax, 

 inner with scarious erose-denticulate margins : rays saffron-yellow, sometimes 

 inch long: akenes narrowly oblong, nearly the length of the pappus. — Proc. 

 Acad. Philad. 186.3, 6.'). Mountains of Colorado. 



4. A. integrifolius, T. C. Porter. Stems several from the caudex, 

 ascending, a foot or less high: radical leaves 3 to 8 inches (including short 



