Erigeron. COMPOSITE. 209 



gins; upper cauline linear-lanceolate, small: rays about 40. Proc. Am. A cad. 1. c. Aster 

 salsuginosus, var. angustifolius, Gray, Bot. Calif, i. 325. Mountains of Washington Terr. 

 (Branderjee) to the Sierra Nevada, California, as far south as Kern Co., Lemmon, Mrs. 

 Austin, Matthews, &c. Passes into 



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

 which this is a reduced alpine form), but smaller. Aster glacialis, Nutt. Trans. Am. Phil. 

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

 by Nutt all in Wyoming. 



E. Howellii. Rootstock filiform : stem a foot high, equably leafy, monocephalous : leaves 

 membrauaceous, glabrous and smooth; radical obovate, sleuder-petioled ; cauline mostly 

 ovate and with broad half-clasping base (larger ones 2 inches long and an inch wide), some- 

 times one or two sharp denticulatfons, mucronate-acuminate : involucre, c., nearly of the 

 foregoing: rays only 30 to 35, two-thirds inch long, a line or two wide, white. E. salsniji- 

 nosus, var. Uowellii, Gray, Proc. Am. Acad. xvi. 93. Oregon, in the Cascade Mountains, 

 Howell. 



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

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

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

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

 volucre less attenuate and spreading than that of E. salsuginosus, obscurely viscidulous but 

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

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

 Rothroek in Wheeler Rep. vi. 154 ; Gray, Proc. Am. Acad. xvi. 93. Rocky Mountains of 

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

 California, Brewer, Bolander, Greene. 



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

 but the exterior minute, setulose or subulate-squamellate : stems chiefly erect, tufted, generally 

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

 criminate, montane, but never alpine.) Phcenactis, 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. Prodr. v. 284, & vii. 274 ; 

 Torr. & Gray, Fl. ii. 173. E. ylabellus, var. mucronafus, Hook. Fl. ii. 19. Stenactis speciosa, 

 Liudl. Bot. Reg. t. 1577; Hook. Bot. Mag. t. 3007. 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 

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

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

 name would imply, but rather smaller than those of the preceding) : short outer pappus 

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

 Gray, 1. c. E. (jrandijlorum, Nutt. Jour. Acad. Philad. vii. 31, not Hook. Rocky Moun- 

 tains, from Wyoming to New Mexico and S. W. 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 

 considerably 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. 7) ; Torr. & Gray, 1. c., with vars. asper & pubescens. E. asper, Nutt. 1. c., a some- 

 what roughish-hirsute" form. E. pulchellus, 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 

 pubescence 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-lanceolate : cinereous pubescence of the 



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