QQ I'ULVGONACblJ*:. Enu(jouum. 



m-eener above • panicle twice or thrice divided, with 1 to 3 invohicres on the short branches: 

 bracts short, the lower son.cwliat elongated: involucres glabrate, ^ lines long with acute tri- 

 angular teeth: llowers light rose-color, l-i lines long. -in the Blue ilounlams, t)rcgoii ; collected 

 only hy Douglas and Xcviiis. 



■H- ++ Perennlah, wvoily and leaf;/ at base, tomentose or glahmte : j^anidc diffuse, 

 with short ruj'ul hranehlets : itirulitrre short, tite. teeth rounded and more or 

 less membra noits-nianjined. 

 45. E. Heermanni, Dur. & II il^. Shrubby at base, a foot high, yelkiwisli, 

 soon "liibrate above, ilivaricately dicliotomous, the short rigid branchlets sonunvliat 

 spinesceiit: leaves scattered at the base, obhmceolate, half an inch long, on slender 

 petioles ; bracts very small, triangular : involucres few and distant, campanulate, 

 a line long, the teetli rounded and margined, glabrous: llowers ]l lines long, rose- 

 colored or yellowish, tlie outer lobes obovate, the inner narrower. — Pacif. IJ. liep. 

 V. 14, t. 17 ; Torr. iV Cray, 1. c. 17'J. 



In dry valleys of Calilornia and Nevada ; on Pose Creek (IIccrmcKin) ; Washoe and Humboldt 

 Counties, Nevada (7V//T//, Laamon); S. Nevada, Wluelcr. 



4G. E. Palmeri, Watson. More tomentose throughout, and usually taller, with 

 a short branching leafy base : leaves lanceolate or oblauceolate, acute, half an inch 

 long, on short jietioles : stems somewhat Hexuous, mostly alternately branched, the 

 short branchlets divaricate or deilexed, very short-jointed : bracts vi-ry small : invo- 

 lucres rather numerous, narrowly tuibinate, a line long, nearly glabrous, the rounded 

 teeth pubescent : llowers a line long, white tinge.l with rose-color, the outer lobes 

 cuneate-obovate, the inner slightly narrower: akene somewhat i)ubescent. — Tr.-e. 

 Am, Acad. xii. 2G7. 



Collected only by Dr. E. PaUncr at Julian and San Feliiic, San Diego County, and also in 

 Southern Utah. 



.^ ++ ++ Annuals: lea res rosiilatc at the base, but sometimes also oenirrin;/ at the 

 nodes. Sjieeies mostli/ of diffietilt definition. 



= Tomentose throughout: branches vin/ate, sj>arin;/fi/ divided: incolueres nar- 

 row, 2 lines loiuj. 



47. E. virgatum, r.enth. Slender, a foot or two high or more : leaves oblau- 

 ceolate, an inch or two long, on slender i)etioles, the margin usually undulate : 

 branches elongated and ascending, strictly virgate or Hexuose : bracts lanceolate, 

 shorter than the involucres, sometimes including one or more h-aves : involucres 

 tomentose, 2 lines long : flowers a line long, rose-colore.l to white or ydlow ghi- 

 l.rous. — DC. Trodr. xiv. IG ; Torr. ,K: Gray, 1. c. 177. K roseum, Dur. i^ Hdg. m 

 Pacif. R. Hep. v. 14, t. 15 ; the exceptional more foliaceous and branching form. 



From Siskiyou County {Orccnr) to bos Angeles, in the Coast Kaiiges, niid also in the Sicrni 

 Nevada as hi-h as tlic Yo.semite Valley. As ivsj-ects tomciitum it appears to be variable, ranging 

 towards E. viminnnn, iVom which it shouhl lie ilistinguished by the narrower leaves, larger invo- 

 lucres, and less ditluse habit. 



48. E. dasyanthemum, Torr. .^ Oray, I.e. Less tall and more slender : 

 leaves rounded, half an inch broad or less, somewhat scattered upon the stein : 

 ])anicle more branched and rather dilfuse : bracts very small : involucres scarcely - 

 lines long, very narrow, flowers a line long or less, villous at least at base. 



Near Clear Lake {Dolanda; Torrqi); Borax Lake {Torrcj) ; also near Viiginia City, Bhnmcv. 

 = = Glabrous or somevhat tomentose, slender and more diffusely branched: 

 involuci-es 1 to 1), lines long, narrow or turbinate: bracts very small. 



49. E. vimineum, Dougl. l^vather diffuse, the branches often elongated, a half 

 to a foot high, usually more or less tomentose at lea.st l)elow the panicle : leaves 

 orbicular to'^broadly ovate, 3 to 10 lines broa<l, undulate, less tomentose above; the 



