Erigeron. COMPOSIT.E. 209 



gius ; upper cauline linear-lanceolate, small: rays about 40. — Proc. Am. Acad. 1. c. Aster 

 salswjhiusiis, var. cuKjiistifolins, Gray, Bot. Calif, i. 32.5. — Mountains of Wasliington Terr. 

 (Brundeijec) to the Sierra Nevada, California, as far south as Kern Co., Loninon, Mrs. 

 Austin, Matthews, &c. Passes into 



Var, glacialis. A span liigh, few-leaved, monocephalous : leaves as of the type (of 

 which this is a reduced alpine form), but smaller. — Aster t/ldcia/is, Nutt. Trans. Am. Phil. 

 Soc. vii. 291 ; Torr. & Gray, PI. ii. 155. — Alpine region of the Rocky Mountains; first coll. 

 by NiittaU in Wyoming. 



B. Ho"Wellii. Eootstock filiform : stem a foot high, equably leafy, mouocephalous : leaves 

 membranaceous, glal)rous and smooth ; radical obovate, slender-petioled ; cauline mostly 

 ovate and with broad lialf-clasjjing ba.se (larger ones 2 inches long and an inch wide), some- 

 times one or two sharp denticulations, mucrouate-acuminate : involucre, &c., nearly of the 

 foregoing : rays only 30 to 35, two-thirds inch long, a Hue or two wide, white. — E. salsiuji- 

 nosHS, var. Howellli, Gray, Proc. Am. Acad. xvi. 93. — Oregon, in the Cascade Mountains, 

 Howell 



E. Coulteri, T. C. Porter. Eootstock slender : stem 6 to 20 inches high, equably leafy, 

 bearing solitary or rarely 2 or 3 rather slender-pedunculate heads : leaves membranaceous, 

 obovate to oblong, either entire or serrate with several sharp teetli, pilose-pubescent to gla- 

 brous, cauline inconspicuously mucronulate : disk of the head about half an inch wide : in- 

 volucre less attenuate and spreading than that of E. salsiic/inosiis, obscurely viscidulous but 

 hirsute (as also the peduncle) with spreading hairs: rays 50 to 70, ratlier narrowly linear, 

 half-inch or more long, white, varying to purplish. — Porter & Coulter, Fl. Colorad. 61 ; 

 Rothrock in Wheeler Rep. vi. 1.54 ; Gray, Proc. Am. Acad. xvi. 93. — Rocky Mountains of 

 Colorado, at about 10,000 feet. Coulter, &c., of Utah, Weird, Jones, &c., and Sierra Nevada, 

 California, Brewer, Bolunder, Greene. 



++ -H- Less Aster-like : rays 100 or more and narrow : involucre closer: pappus more or less double, 

 but th.e exterior minute, setulose or subulate-squamellate: stems chiefly erect, tufted, generally 

 leafy to the summit, and bearing few or several heads: leaves entire. (Species hard to dis- 

 criminate, montane, but never alpine.) — § Pluenactis, Nutt. Trans. Am. Phil. Soc. 1. c, in part. 



E. speciosus, DC. Sparingly and loosely hirsute or with a few scattering hairs : stems 

 mostly 2 feet high, very leafy to the top : leaves lanceolate, acute (3 to 8 lines wide), 

 sparsely ciliate ; lowest more or. less spatulate : involucre hirsute-pubescent, or sometimes 

 almost glabrous : rays half-inch to almost an inch long, violet. — Rrodr. v. 284, & vii. 274 ; 

 Torr. «& Gray, Fl. ii. 173. E. r/label/tis, var. mueronittus, Hook. Fl. ii. 19. Sfenactis speciosu, 

 Lindl. Bot. Reg. t. 1577; Hook. Bot. Mag. t. 3067. — British Columbia to Oregon and per- 

 haps N. California, near the coast. 



E. macranthus, Nutt. From hirsute-pubescent to nearly glabrous : stem 10 to 20 inches 

 higli : leaves from lanceolate to ovate ; upper often reduced in size : involucre glabrous or 

 nearly so, l)ut commonly minutely glandular : rays half-inch long (heads not larger, as the 

 name would imply, but ratlier smaller than tho.se of the preceding) : short outer pappus 

 more conspicuous, sometimes nearly squamellate. — Trans. Am. Phil. Soc. 1. c. ; Torr. & 

 Gray, 1. c. E. firandiflorum,'Si\tt. Jour. Acad. Philad. vii. 31, not Hook. — Rocky Moun- 

 tains, from Wyoming to New Mexico and S. AV. Utah, at 8,000 to 10,000 feet in the south- 

 ern portions of its range. 



E. glabellus, Nutt. From partly glabrous to copiously hirsute, disposed to be naked 

 above : stems 6 to 20 inches high : leaves lanceolate or the lowest somewhat spatulate ; 

 upper linear-lanceolate and gradually reduced to subulate bracts : heads in the typical forms 

 considcrabl}^ smaller than those of the two preceding species : involucre strigosely hirsute or 

 pubescent : rays violet, purple, and rarely white, a third to half an inch long : outer pappus 

 setulose. — Gen. ii. 147, & Jour. Acad. Philad. 1. c. ; Hook. Bot. Mag. t. 2923, & Fl. ii. 19 (excl. 

 var. y) ; Torr. & Gray, 1. c, with vars. asper & puhescens. E. osper, Nutt. 1. c, a some- 

 what roughi.sh-hirsute form. E. pidchelliis. Hook. Fl. ii. 19, partly. — Minnesota and Sas- 

 katchewan to the Rocky Mountains, and southward to Colorado and Utah. Occurs in 

 various forms ; the small or slender northern forms of the plains naked-stemmed and simple ; 

 some of the larger more equably leafy and approaching the preceding, others by the copious 

 pul)escence leading to the ambiguous 



Var. mollis, Gray. Somewhat cinereous with a soft and short spreading pubescence, 

 a foot or two high, leafy to the top : leaves oblong-lauceolate : cinereous pubescence of the 



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