Hieradvm. , COMPOSITjE. 427 



Alleghanies of Penn., Porter and Traill Green, seems to be a depauperate form of the present 

 species, with stem naked and leafless except near the base, and bristly hairs not so long: 

 but heads in the specimens barely in blossom, and akenes unknown. 



# # Rocky Mountain and Pacific species. (Involucre in most cases less obviously double than in 

 the Eastern species ; the calyculate bracts sometimes unequal or emulating the interior or else 

 obsolete.) 



+- Crinite-hirsute with long and whitish or yellowish shaggy denticulate hail's, especially on both 

 sides of the entire leaves, on the branching leafy stems and panicle, and commonly but not 

 always on the involucre also : flowers yellow : akenes columnar and short, not at all narrowed 

 upward, at most a line and a half long, shorter than the sordid pappus. 



H. Scouleri, Hook. Robust, a foot or two high : long and soft setose hairs commonly from 

 small papilla; : leaves lanceolate or spatulate-lanceolate (3 to 6 inches long) : panicle irregu- 

 lar or branching: heads half-inch high: involucre somewhat furfuraceous and glandular, 

 also sparsely or copiously beset with long bristly hairs : pappus whitish. — Fl. i. 298, & Torr. 

 & Gray, Fl. ii. 478, partly (some specimens of coll. Sconler distributed being II. cijnogios- 

 soides, and the plant from "Pennsylvania, Schu-einitz," of Hooker, being II. Gronovii); 

 Eaton, Bot. King Exp. 199. — Montana to Oregon and Brit. Columbia, southeast to the 

 Wahsatch Mountains, Utah. 



H. horridum, Fries. Low (a span to a foot high), in tufts, branched from the caudex: 

 softer villous hairs not from papillae : leaves Ungulate-lanceolate or spatulate-oblong, lowest 

 petioled : panicle corymbiform-cymose, of numerous small and rather narrow heads : invo- 

 lucre 3 lines high, sometimes nearly naked, oftener beset with scattered and long bristly 

 hairs: pappus fuscous. — Epicr. Hier. 154; Arvet-Touvet, 1. c. 19. H. Breweri, Gray, Proc. 

 Am. Acad. vi. 553, & Bot. Calif, i. 440. — On rocks, in the higher Sierra Nevada, California, 

 from Shasta to San Bernardino Co. ; first coll. by Bridges, next by Brewer. 



H. KELiciNUM, Fries, Epicr. 1 53, would seem to be only a taller and simpler-stemmed 

 form of the preceding, with widely open panicle and long-hirsute involucre. Described from 

 a specimen in herb. DC, from mountains of California, Bridges. 



4— -t— Crinitely long-villous with soft-woolly and blackish smooth hairs, which involve the heads, 



&c, but are wanting to lower leaves ; no stellular pubescence aud no glands: flowers yellow: 



pappus fuscous. 



H. triste, Cham. A span or two high : stem simple, few-leaved, bearing solitary or mostly 



2 to 4 somewhat racemosely disposed heads : radical leaves obovate to spatulate, entire, 



green and glabrate, or with sparse pale hairs; cauline oblong, upper ones and stem more or 



less villous-lanate : heads half-inch high : livid involucre and peduncles densely clothed with 



the very long dark-brown or partly grayish soft wool : akenes short-columnar. — Cham, in 



herb. Willd. ; Spreng. Syst. iii. 640 ; Frcel. in DC. Prodr. vii. 209 ; Torr. & Gray, Fl. ii. 



458, partly; Fries, 1. c. — Aleutian Islands to Behring Strait; first coll. by Chamisso and 



Eschscholtz. 



H — ^— -i — Dark-hirsute (verging to naked) and somewhat glandular (also whitish with short 



stellular-tomentum) on the involucre : leaves and lower part of scapiform stems not even pilose 



(but glabrous or at most puberulent): flowers yellow: pappus sordid. 



H. gracile, Hook. Pale green, in tufts : leaves nearly all in radical clusters, obovate- to 



oblong-spatulate (1 to 3 inches long) and attenuate into petioles, entire or repand-denticu- 



late: stems or scapes slender, 8 to 18 inches high, cinereous-tomentulose above, bearing few 



or several racemosely disposed livid heads, the lower linear-bracteate : involucre about 4 



lines high, usually blackish-hairy at base in the manner of the preceding, but the hairs much 



shorter than the head, also (as on the peduncles) some more setulose and glandular ones : 



akenes short-columnar. — Fl. i. 298 ; Fries, 1. c, not of Frcel., which is later. //. arcticum, 



Frcel. in DC. Prodr. vii. 209. H. Hookeri, Steud. Women, ed. 2, 763. H. triste, in part, 



Torr. & Gray, Fl. ii. 478. H. triste, var. gracile, Gray, Bot. Calif, i. 441. — Alaska (Norfolk 



Sonnd, ex Frcelich), Brit. Columbia, Northern Cascade and Rocky Mountains, and south 



to those of Utah and Colorado. Passes into 



Var. detonsum. A span to nearly a foot high, with rather smaller heads : dark hir- 

 sute hairs wholly wanting, or only some smaller ones on the involucre. — II. triste, var. deton- 

 sum, Gray, Bot.Calif. 1. c — Mountains of Brit. Columbia to those of Colorado, and alpine 

 region in the Sierra Nevada, California, at some stations accompanying the typical form. 



