COMPOSITE. (COM1'<)SITE FAMILY.) 159 



lauceolate, with mostly acute and loose herbaceous tips: rays 3 or 4 lines 

 long, violet: (tkents />ilose-j)Hbescent. — Monntains of Wyoming ami Montana, 

 and far northward. 



'2. A. COnspiCUUS, Lindl. Scabrous : stem 2 feet hn/h, stout, rif/id, beur- 

 iiu/ several, or miinerous corijmboseli/ ajmose heads : leaves ri;,Md, ovate, oblong, 

 or the lower obovate, ample, A to 6 inches lojuj : involucre uhout ffjuallitif/ the 

 disk; 5 to 6 lines hifjh ; its bracts in several series, minnteln (jlandulur-pnberuleut, 

 lauceolate, acute, the greenish tips little spreading : rays ^ inch long, violet 

 akenes minuteli/ pubescent. — In the mountains, from the Yellowstone north- 

 ward. 



* * Involucre and usualli/ branchlets viscidl //-glandular, rather well imbricated: 

 rai/s 15 to 40, shoivi/, violet to purple: akenes narrow, several-nerved : leaves 

 all entire or the lower with few teeth; cauline all sessile or parti i/ clasping. 

 •\- Stem simple: leaves and heads proportional 1 1/ large: aljiine or sulKilpine. 



3. A. integrifolius, Nutt. Stem afoot or more high, stout, sparselg leaf/, 

 villous-pubescent but glabrate, bearing few or several racemed or thi/rsoid 

 heads: leaves Jirm, oblong to spatulate, 4 to 7 inches long; the smaller upper 

 ones lanceolate, half-clasping ; lowest tapering into a long winged petiole : 

 heads j inch high : involucre and branchlets viscid-glandular ; its bracts 

 linear, not squarrose : rays bluish purple. — From Colorado to ^loutana and 

 westward. 



4. A. Kingii, Eaton. A s/yan or less high, cespitose: leaves mainl// radical, 

 spatulate, entire, or with few sharp teeth, mucronate, thinniih, glal)rous or 

 nearly so, 1 fo 3 inches long: flowering stems pul)escent and above glandular, 

 bearing solitary or 3 to 5 middle-sized heads : involucre 4 or 5 lines hitjh, vierehf 

 piiberulentglandular, hardly at all viscid ; the l)racts linear-lanceolate with at- 

 cenuate and squarrose-spreading green tij)s: rays white. — Bot. King Exp. 141. 

 In the 'Wasatch Mountains. 



1- -f- Stems branching: leaves comparativelg small : neither alpine nor sulmlpine. 



•w- Involucre of the small and scattered heads not squarrose ; the green tips of the 



bracts more or less erect: slender and low species, a span to a foot or less high. 



5. A. campestris, Xutt. Pminose-puberulent and viscidu/ous, somewhat 

 heavy-scented : leaves linear, about an inch long, a line or two wide, or lower 

 narrowly spatulate, mostl/ glabrate, some obscurely 3-nerved : involucre 3 or 4 

 lines high, hemispherical, of rather few-ranked and little unequal linrnr acute 

 bracts: rays 3 or 4 lines long, light violet or purple. — From Montana and 

 Idaho to Wasliington and California. 



6. A. Fendleri, Uray. Klgld, a span to a foot high, spnrstli/ hispidu- 

 lous: the linear one-nerved firm leaves hispid-cillate, otherwise usually smooth 

 and glabrous ; involucre somewhat campanulate, 3 linos high ; o>iter bracts 

 shorter, linear-oblong, obtuse, pruinoseglandular : rays violet, 4 lines long. — 

 ri. Eendl 66. A. Nuttallii, var. Fendhri, Gray. Plains and sand-hills, from 

 W. Kansas to S. Colorado and N. New Me.xico. 



■*-*■■*-*■ Involucre of middle-sized heads well imbricated; the unequal bracts with 

 loose squarrose-spreading tijts: leaves not rigid, spread iuq. 



7. A. Novse-Anglise, L. Stem stout and strict, 2 to Sfct high, very leafy 

 to the top, coarsely hirsute or hispid with mang-jointed hairs, also with glandular 



