468 COMPOSITE. 



a few calyculate oues at base: flowers yellow; rays short and broad: 

 achenes linear, prismatic, finely striate between the angles, 232 lines 

 long, whitish, crowned with a pappns of decidedly short and firm 

 scabrous bristles. — Dry open stony ground near the base of Castle Peak 

 (otherwise called Mt. Stanford), north of Donner Lake. June, July. 



17. S. leptolepis. Rather slender, 1—2 ft. high, distinctly but spar- 

 ingly woolly-hairy in maturity and most so about the infloresceuce : 

 leaves oval and oblong-oval, obtuse, irregularly dentate, 2 — 3 in. long, 

 abruptly tapering to petioles as long or longer; the middle cauline 

 broadly linear, 4 in. long, entire, sessile and amplexicaul: heads 5 — 7, in 

 a simple corymbose cyme, all but the central one on slender elongated 

 peduncles: involucre cylindrical, % in. high; bracts narrowly linear, 

 thin, glabrous, the calyculate bractlets woolly: rays none. — Dry woods 

 of Amador Co., Hansen. 



18. S. Rawsoiiiamis, Greene, Pittonia, ii. 166 (1891). Robust, 2—3 ft. 

 high, somewhat canesceut with scattered short woolly hairs : leaves 6 — 8 

 in. long, ovate to lanceolate, acute, sinuately or laciniately toothed, or 

 the upper repand-dentate: heads very numerous, in a compound corymb; 

 involucres nearly cylindrical, 4 lines high, the bracts oblong-linear, 

 abruptly acuminate, the calyculate ones few and short: rays none: 

 tubular corollas salmon-color, soon concealed by the accrescent and 

 copious white pappus. — Forests of Fresno Co., at middle elevations in 

 the Sierra; a handsome, apparently almost white-flowered species. 



19. S. WhippleanuS, Gray, Proc. Am. Acad. xix. 54 (1883) Decidedly 

 hoary, stoutish, 2 — 3 ft. high: leaves 6 — 8 in. long, from sinuately 

 to laciniately toothed, rarely almost pinnatifid; cauline reduced and 

 sessile: heads few, large and broad, almost campanulate, in an ample 

 loose cyme: involucral bracts fleshy, oblong-linear, abruptly acuminate: 

 rays % ^^- long. — Pine woods of Calaveras Co., Bigeloiv, Greene. 



20. S. Meiidocineiisis, Gray, Proc. Am. Acad. vii. 362 (1868). Lightly 

 arachnoid-floccose, early glabrate: stem robust, 2 — 3 ft. high, nearly 

 naked above, and with a dense corymb of 5 — 8 rather large heads: leaves 

 somewhat succulent, oval or oblong, obtuse, dentate, narrowed to a 

 petiole, the middle cauline reduced, lanceolate, sessile, the uppermost 

 passing into subulate bracts: involucres rather large, with scarioun- 

 margined lanceolate acuminate proper bracts, and many loose calyculate 

 ones: rays 12 — 1.5, oblong, short. — Open plains of Mendocino and Hum- 

 boldt counties. 



21. S. Scorzonella, Greene, Pittonia, iii. 90 (1896). Stems scapiform 

 and leafy-bracted, 12 — 18 in. high, from stout horizontal or ascending 



