214 COJfPOSIT.E. Ericjeron. 



ii. 21 ? — Gravelly hills and plains, N. "Wyoming and Montana to Idaho, Nuttall, Spcddiiu/, 

 Geyer, Parrtj, &c. 



= = Heads rayless : leaves filiform to narrowly spatuiate-linear, chiefly from the niulticipital 

 caudex: dwarf flowerinj,^ stems more or less scapiform and monoceplialous. 



.1 Pi Bloomeri, Gray. Densely cespitose, ciuereous-puberulent or glabrate and pale : radical 

 leaves 1 to 3 inches long, tlie larger dilated upward sometimes to a line or jnore in width; 

 cauline few and nearly filiform : scapiform flowering stems 2 to 6 inches high : head almost 

 half an inch high : involucral bracts equal, linear-lanceolate, soft-villons or canescent : akenes 

 glabrate, oblong-linear, flat: pappus whitish, simple. — Proc. Am. Acad. vi. 40, & Bot. Calif, 

 i. .328; Eaton, Bot. King Exp. 148. — Stony ground, mountains of Nevada to Idaho, and 

 from the Sierra Nevada, California, to E. Oregon; first coll. by BlmmiKt. Habit of the last 

 preceding species, to which it is most allied. 



^ = = Heads radiate : leaves from narrowly linear to oblong. 



o. Stems naked above, more commonly simple and monoceplialous, only a span or two high: pappus 



simple. 



E. Nevadensis, Geat. Stems numerous from a multicipital caudex, erect, a, span to 

 nearly a foot high : leaves all lanceolate or linear ; radical 1 to 4 inclies long, 1 to 4 lines 

 wide, strigulose-cinereous ; upjiermost small and subulate : head always solitary, lialf-iuch 

 high : involucre villous-pubescent, sometimes glabrate ; its bracts equal : rays rather broadly 

 linear, white or jiale blue, 4 to 6 lines long : akenes comparatively large : pappus rather 

 coarse. — Proc. Am. Acad. viii. 649; Bot. Calif, i. 328. E. caspitusus, var. grandlforus, 

 Eaton, Bot. King Exp. 153, in part. — Sierra Nevada, California, and W. Humboldt Jloun- 

 tains, Nevada, at 5,000 to 8,000 feet ; first coll. by Bloomer, Watson, &c. Appears to pass 

 into the somewhat doubtful 



Var. pygmEeus, Geat, 1. c. Dwarf, subcanlescent : leaves spatuiate-linear, an inch 

 or more long, a Hue ur so wide, more minutely pubescent or cinereous, and glabrate : head 

 considerably smaller: involucre slightly hirsute : rays purple. — Sierra Nevada, California, 

 al)ove Ebbett's Pass (at 9,500 feet) and Jlono Pass (10,750 feet), Breicer. Also Mount 

 Dyer, Plumas Co. (a connecting form), Mrs. Austin. 



E. Batoni, Geay; Stems several from the crown of a strong tap root, slender and weak, 

 diffuse, 3 to 9 inches long, simple or with 2 or 3 monocejihalous branches : leaves all linear, 

 thickish, minutely strigulose-pubescent ; radical about 2 inches long and the broadest 2 lines 

 wide : heads only 3 lines high : bracts of the sparsely hirsute involucre little unequal : rays 

 seldom over 20, at most 3 lines long, white or purplish. — Proc. Am. Acad. xvi. 91. E. ochro- 

 Icii.cus, Eaton, Bot. King Exp. 152, not Nutt. —Rocky iMountains of Colorado and Wyoming, 

 and the Uinta and Wahsatch Mountains in Utah; first coll. by Watson and Eaton, 

 b. Stems more leafy and disposed to branch, but sometimes monocephalous : pubescence cinereous: 

 outer pappas setulose, sometimes rather manifest, sometimes obscure or none. 



E. Cffispitosus, NoTT. Low, a span to rarely a foot high, many-stemmed and ascending 

 or spreading -from a stout multicipital caudex, from cinereous to canescent with dense and 

 fine short pubescence (this generally spreading and soft, sometimes hispidulons rarely fine 

 and appressed, at least on young parts): stems of smaller plants monocephalous- radical 

 leaves spatulate to lanceolate, and cauline lanceolate-oblong to linear (half-inch to 2 inches 

 long) : heads short-peduncled, 3 or 4 lines high : bract.s of the involucre ratlu-r unequal : rays 

 40 or 50, Imear, 3 or 4 lines long, white, sometimes tinged with rose-color — Tran^: \m 

 Phil. Soc. vii. 307 (a small and low form) ; Torr. & Grav, El. ii, 1T9. l>i,,l.,pappnsr„n,,rens 

 (En,j,ron mnescens yVon: & Cray, 1. c.) & D. ffran.lijhr.s (E. nrspit.s,,,, var. rpa„d,yiarus, 

 Porr. & Gray, 1. c). Hook. Fl. ii, 21, the Litter a large form. -Mountains and 'high phdns, 

 Saskatchewan and Montana to Utah and borders of New Mexico, and eastern part of tlie 

 Sierra Nevada, California. A variable species. -Western forms come near to the next 



E. corymbosus, Nutt. Taller, often a foot or two high, erect from crecpin"- rootstocks 



soft-cmereous or sometimes hispidulous with tlie mostlv spreading short pubescence ■ radical 

 leaves narro^v-lanceolate or spatulate-lanceolate (largest 3 or 4 inches long and 3 or 4 lines 

 wide), 3-nerved ; cauline linear and narrow : heads sometimes solitarv, nsnally several and 

 corymbosely disposed on short slender peduncles: involucre 3 lines high, canescentiv pubes- 

 cent : rays 30 to 50, mostly narrow and 3 to 5 lines long, blue or violet, :,,,,,arentlv some- 

 times white, - Trans. Am. Phil. Soc. vii. 308 ; Torr. & Gray, 1. c. ; Gray, Bot. CaUf . i. 329. 



