COMPOSITE. 467 



denticulate, or some entire: heads numerous, in a rather dense panicle, 

 the involucres cyliudric, scarcely bracteolate: rays few, small, light 

 yellow. Var. PaciHou8, Greene. Stems coarser and fistulous: invo- 

 lucres larger and cymose-corymbose rather than panicled: rays none. — 

 The type only along the eastern base of the Sierra, in subsaline wet 

 meadows; the very marked variety in brackish marshes about San Fran- 

 cisco Bay and its tributaries. 



13. S. Clevelandi, Greene, Bull. Torr. Club, x. 87 (1883). Stems 

 tufted on short creeping rootstocks, slender, 1 — 2 ft. high; the mostly 

 radical leaves somewhat succulent, ovate-oblong, entire, obtuse, nearly 

 veinless, not as long as the petioles; even the upper and smaller cauline 

 also distinctly petiolate: involucre 4—5 lines high, rather broad, its 

 bracts subulate-linear: rays 6—8, short, deep yellow: achenes short, 

 angular.— Springy places in the mountains of Lake Co., Cleveland, 

 Fiingle. 



14. S. Layiieai, Greene, 1. c. Strict and simple, 2 ft. high: the mostly 

 radical leaves linear-lanceolate, entire, 3—4 lines wide, 1 — 2 in. long, on 

 petioles nearly as long; the few cauline similar, smaller, less obviously 

 petiolate: heads 5^7, in a cyme, all but the central one on peduncles 

 2—3 in. long; involucre large, campanulate, % in. high, naked at base; 

 rays 7 — 10, oblong-linear, % in. long, orange-yellow: the merely convex 

 style-tips with 3 or 4 conspicuous central bristles.— Ou Sweetwater 

 Creek, El Dorado Co., Mrs. Curran. 



•^+ ■•-+ Herbage more or less flocculent or hoary, at least when young. 

 =^ Leaves lanceolate or broader, entire or toothed, never lyrate. 



15. S. aronicoides, DC. Prodr. vi. 426 (1837). Growing parts loosely 

 woolly, afterwards glabrate: stem stout, 2 — 3 ft. high, leafy chiefly at 

 base, the many small heads in a compound terminal cyme: leaves ovate 

 to oblong and lanceolate, 3—6 in. long, irregularly and coarsely toothed, 

 much reduced on the stem, the lappermost only bract-like; involucres 

 short, subcampanulate, its few bracts lanceolate, acuminate, not black- 

 tipped: flowers 10—20; rays none, or rarely 1 or 2.— Chiefly among 

 thickets, on northward slopes of hills, both in the Coast Eange, and 

 western foothills of the Sierra Nevada. April, May. 



16. S. Soniiei. More distinctly and quite permanently woolly, the 

 stoiit striate stem 1 — 3 ft. high, the oval-lanceolate petiolate leaves 

 doubly dentate: heads few and large, 5—9, on very stout peduncles and 

 forming usually a simple corymb: involucre campanulate, more than K 

 in. high and as broad as high, the lanceolate bracts acuminate, and with 



