388 COMPOSITE. 



I^etiole, remotely serrate-toothed; caaliue many, nearly as large, sessile 

 and half-clasping: heads 3—8, loug-peduncled, l}^ in. broad including 

 the numerous and narrow white rays: bracts of the involucre linear, 

 slenderly acuminate, subequal. — Collected by the author, at Summit 

 Station, and at foot of the Washoe Mts. south of Truckee, in the summer 

 of 1895. Species remarkably combining the characters of E. Philadel- 

 phicus and E. Coulteri. 



7. E. Coulteri, Porter, Fl. Colo. 61 (1874). More slender, the moao- 

 cephalous stem and one or two radical leaves from a slender ascending 

 rootstock, this in no degree proliferous; herbage nearly glabrous, never 

 scabrous; the lanceolate basal leaves very acute, the few serratures also 

 acute, the slender petioles longer than the blade: heads 2 in. broad 

 including the numerous narrow white rays; bracts of the involucre 

 broader than in the last and less acuminate. — Subalpine woods of the 

 Sierra from above Donner Lake northwards, but more plentiful in the 

 Rocky Mts. of S. Colorado. 



8. E. salsnginosiis, Gray, Proc. Am. Acad. xvi. 93 (1880); Richards. 

 App. Frankl. 2 ed. 32 (1828), under Aster. Rootstocks short, thickish, 

 branching: stems more or less decumbent, 12 — 20 in. high, the summit 

 or peduncles lanate-pubesceut: leaves mostly glabrous except on the 

 margin; the radical spatulate or almost obovate, attenuate to a marginal 

 petiole ; cauline gradually smaller, relatively broader and sessile, all 

 entire or nearly so, obtusish or acute: head usually solitary; bracts of 

 involucre in several series, linear-subulate with spreading tips, viscid- 

 ulous: rays about 40, broad, purplish or violet: disk ^;^ in. broad. Var. 

 angustifolius. Gray. Leaves all narrower, the radical oblanceolate, 

 merely scabrous on the margin, the upper cauline linear-lanceolate, all 

 acute: heads commonly 3. — Type frequent in Plumas Co. and northward; 

 the variety very common at Summit Station in the Sierra Nevada. 

 July— Oct. 



9. E. SOiinei, Greene, Pittonia, i. 218 (18S8). Stems slender, 6—10 in. 

 high, apparently from a horizontal rootstock: herbage canescently 

 strigulose: leaves mostly basal, 2 — 3 in. long, lanceolate, narrowed to a 

 petiole: pedunculiform upper part of stem leafy-bracted, usually mono- 

 cephalous: involucre campanulate, 4 — 5 lines high; bracts subequal, in 

 about 2 series: rays 9—12, broad, purplish or nearly white. — Western 

 slope of Washoe Mts., Nevada, but barely beyond the limits of Nevada 

 Co., California. Mr. Sonne. Evidently forming a part of the E. Neva- 

 denisis, Gray, and should possibly be considered the type of that species. 



10. E. Nev.adeiisis, Gray, Proc. Am. Acad. viii. 649 (1873), in part. 

 Tufted leaves, and subscapiform monocephalous stems often numerous. 



