382 COMPOSITiE. Arnica. 



Gray, 1. c. partly ; Gray, Bot. Calif. 1. u. A. mollis, Hook, M. i. 231 ; Torr. & Gray, Fl. 1. c. ; 

 Torr. Fl. N. Y. t. 60, a form with comparatively few and mostly broad leaves. A. lanceolata, 

 Nutt. Trans. Am. Phil.'Soc. 1. c, A. latifoUa, Gray, Bot. Calif, ii. 458, & i. 415, in part, 

 almost glabrous broad-leaved form. — Unalaska and Sitka to the Sierra Nevada, California, 

 and mountains of Utah and Colorado; east to L. Superior, Mount Washington, and the 

 mountains of Lower Canada. A form with comparatively narrow leaves, N. Maine and 

 Lower Canada, Goodale, Allen, c&c. 



' A. longif olia, Eaton, Many-stemmed in a tuft, minutely puberulent : cauline leaves elon- 

 gated-lanceolate, tapering to both ends, entire or denticulate, somewhat nervose (-3 to 6 inches 

 long), lower with narrowed bases connate-vagiuate ; heads corymbosely disposed, short- 

 peduncled : akenes minutely glandular, not hairy. — Bot. King Exp. 186. — On rocks, in the 

 mountains, at 9,000 feet, from above Summit {Jones, Pringle) to Kern Co. (Rothrock) in 

 California, Clover Mountains, Nevada ( Watson), and Wahsatch Mts, (Jones) in Utah. 



=>A. foliosa, NuTT. Tomentose-pubescent, strict: leaves lanceolate, denticulate, nervose; 

 upper partly clasping by narrowish base, lower with tapering bases connate : heads short- 

 peduncled, rarely solitary : akenes hirsute-pubescent or glabrate. — Trans. Am. Phil. Soc. 

 vii. 407 (excl. var. nana); Gray, Bot. Calif, i. 416. A. Chamissonis, Torr, & Gray, 1, c, in 

 part. A. montana. Hook. Fl. 1. c, in part. — Wet meadows and mountain-sides, Saskatche- 

 wan to Oregon, N. California, and southward along the Sierra Nevada, and in the Rocky 

 Mountains south to Colorado. 



""™" Var. inoana, Gray, Bot. Calif. 1. c. White with very soft floccose tomentum , — Wet 

 meadows, mostly in water, in the Sierra Nevada, California and adjacent Nevada; first coll. 

 by Brewer and Torrei/. 



++ ++ Heads rayless : stems leafy even on the flowering branches. 

 A. viscosa, Gray. A foot or less high, fastigiately branching, very viscid-pubescent: 

 leaves small (inch or less long), ovate-oblong, entire, closely sessile, but not connate at base : 

 involucre 4 lines high, considerably shorter than the (25 or 30) flowers : corollas pale yellow : 

 akenes glandular-hirsute. — Proc, Am. Acad. xiii. 374, & Bot. Calif, ii. 458. — N. California, 

 on Mt. Shasta at 8,000 feet, Graij & Hooker. 



-I— H— Less leafy: cauline leaves one or two (rarely three) pairs, and the npper mostly small. 

 ++ Heads rayless, mostly 3 to 5 and rather short-peduncled at the naked summit of the stem. 



- A. Parryi, Gray. A foot or less high, slender, simple, somewhat hirsutely pubescent and 



above glandular : leaves membranaceous, commonly denticulate ; radical oval to ovate- 

 oblong (1 to 3 inches long), abruptly or cuneately contracted at base into a short margined 

 petiole ; cauline remote : involucre hirsute and glandular, half-inch or less high : occasion- 

 ally some outermost corollas ampliate : akenes glabrous or with a few sparse hairs. — Am. 

 Nat. viii, 213. A. angustifolia, var. discoidea, latlfolin, Gray in Am. Jour. Sci. ser. 2, xxxiii. 

 238. A. angustifolia, var. eradiata. Gray, Proc, Acad, Philad. 1863,68, — Eocky Mountains, 

 from Colorado (on the borders of alpine region) to Wyoming, in the Wahsatch, Utah, and 

 west to Oregon and Washington Terr. ; first coll. by Parry. 



-H- -i-i- Heads conspicuously radiate, solitary or very few, mostly long-peduncled. 

 = Anthers yellow, as in all the preceding species : tube of disk-corollas hirsute. 

 "TA. Nevadensis, Gray, Half a foot high, puberulent, sometimes cinereous : leaves all 

 oval or oblong, mostly obtuse, entire or a few small denticulations (inch or two long), ob- 

 scurely tripliuerved or 3-nerved at base ; radical roundish to obovate, either abruptly con- 

 tracted or tapering into slender petiole : involucre half-inch high : akenes minutely pubescent 

 and glabrate. — Proc. Am. Acad, xix. 55. — Sierra Ne\ada, California. Lassen's Peak, Mrs. 

 Austin, cinereous form, with rays almost inch long, bears resemblance to Whltneija. Peaks 

 south of Sumniit, at 9,000 feet, Pringle, greener, roundish-leaved, with rays half-inch long. 



- A. alpina, Olin. A span to is inches high, pubescent, hirsute, or at summit villous, strict, 



simple and monocephalous, occasionally 3-cephalous : lea\es thickish, from narrowly oblong 

 to lanceolate, or the radical obloiig-spatulate and small uppermost linear, entire or dentic- 

 ulate, 3-nerved; bases of the cauline hardly at all connate: akenes hirsute-pubescent, rarely 

 glabrate. — " Murr. Syst, Veg., 1774" (according to Fries, but not found there), "Olin, 

 Monogr, Arnic, UpsaliaB, 1799," ex Fries, Sunim, Veg, Scaud. 187 ; Wabl, Fl. Suec. ii. 530; 

 Gray, Bot. Calif, i. 416. A. angustifolia, Vahl, Fl. Dan. t. 1524; DC. Prodr. vi. 317; Torr. 



