ilieracium. COMPOSIT.E. 427 



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

 species, with stem naked and leafless except near the base, and bristly liairs not so long; 

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



* * Rocky Slountain and Pacific species. (Involucre in most cases less obviously double than in 

 the Eastern species; the calyculate bracts sonietiines luicqual or euudatiny tlio interior, or else 

 obsolete.) 



•*~ Crinite-hirsute with loiii^ and whitish or yellowish shaggy denticulate hairs, cspcciallv on both 

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

 always on the involucre also: flowers j-ellow: akenes cohuunar 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 p:ii)ilhe : leaves lanceolate or spatulate-lanceolate (3 to G inches long) : panicle irregu- 

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

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

 & Gray, Fl. ii. 478, partly (some specimens of coll. Scouler distrii)uted being //. cj/nogios- 

 so/'des, and the plant from " Pennsylvania, Schicelnitz," of Hooker, being //. Gronovii) ; 

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

 Wahsatch Mountains, Utah. 



H. horridum, Fuiks. Low (a .^pan to a foot high), in tuft.s, branched from the caudex : 

 softer villous hairs not from papil];r! : leaves lingulate-lauceolate or spatulate-oblong, lowest 

 petioled : panicle cor^'mbiform-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. II. Brewer i, 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. RELicixuM, Fries, Epicr. 153, would secra 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. 



-)— -t— Criniteh' long-villous with soft-woolly and blackish smooth hairs, which involve the heads, 

 &C.. but are wanting to lower leaves ; no stellular pubercence and no glands: flowers yellow: 

 pappus fcscous. 



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

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

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

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

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

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

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

 Eschsdwitz. 



-1— -I— -t— Dark-hirsute (verging to naked) and somewhat glandular (also whitish with short 

 stellnlar-tonKUtuni) on tlie involucre : leaves and lower part of sc.qiiforni stems not even p lose 

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



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

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

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

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

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

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

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

 Froel. in DC. Prodr. vii. 209. //. Iloakeri, Steud. Nomen. ed. 2, 703. //. triste, in part, 

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

 Sound, ex Fradich), Brit. C!oluml)ia, 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 wliolly wanting, or only souhj siTuiller ones on the involucre. — //. 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 tyi)ical form. 



