SUNFLOWER FAMILY. 



513 



few, sessile, uppermost lanceolate and entire, sometimes bract-like; 

 heads § in. long; bracts of involucre linear, none calyculate; rays 

 deep orange, £ in. or more long; style-tips of disk-flowers conspicu- 

 ously penicillate-margined and with a central cusp; achenes glabrous. 



Mountain side near the Geysers, growing under bushes of Picker- 

 ingia and Ceanothus, E. L. Greene, June 17, 4874. Collected since 

 only on Mt. Sanhedrin, Mendocino Co., Rattan, in whose specimens 

 the lower cauline leaves are oblong, tapering to both apex and base, 

 the petiole longer than the blade. 



5. S. Clevelandi Greene. Stems commonly 2 ft. high, corym- 

 bosely branched at summit, but the inflorescence rather strict; 

 herbage glaucous and glabrous, except the small floes of white 

 tomentum in the axils of the upper leaves and bracts; leaves mostly 

 in a radical tuft, oblong, mostly 3 in. long, tapering to both ends 

 from the middle or broadest above the middle, entire, obtuse, on 

 petioles 3 to 5 in. long; uppermost leaves similar but smaller; heads 

 numerous in a compound corymb, 3 lines high; rays deep orange, 2 

 lines long; achenes glabrous. 



Northern Napa Co. (Samuels Springs to Pope Valley and north to 

 Butt's Canon, common in canon bottoms and dry beds of rivulets, 

 mostly in moist spots, July, 1897); Lake Co. 



6. S. aronicoides DC. Stem robust, 1 to 3 ft. high, leafy chiefly 

 at the base or below the middle; younger parts loosely woolly, soon 

 glabrate; heads 5 lines high, many in a compound terminal cyme, or 

 the inflorescence much reduced and the heads few; basal leaves ovate 

 to oblong, 3 to 8 in. long, on petioles 5 in. long or less, irregularly 

 and coarsely toothed, denticulate or almost entire; cauline leaves 

 similar or mostly lanceolate, reduced and auricled at base, the upper- 

 most bract-like; involucral bracts lanceolate, either with or without 

 purple tips; flowers 15 to 2b' or only 10 or 12; rays none, rarely 1 

 or 2; achenes 1£ lines long, glabrous. 



Thickets or sparsely chaparral-covered country: Mission Hills, San 

 Francisco, Kellogp and Harford, 1868; Mt. Tamalpais; Angel Island; 

 Grizzly Peak; Mt. Diablo; Yaca Mountains; Calistoga, etc. Com- 

 mon and widely distributed in the Bay Region, but variable in 

 aspect and not abundant in any one locality. Cauline leaves often 

 more irregularly or saliently toothed than the basal ones. 



7. S. hydrophilus Nutt. Stem purplish, 2 to 4 ft. high, strict, 

 few-leaved; herbage somewhat succulent, glabrous, more or less glau- 

 cous; leaves fleshy-coriaceous, entire or barely denticulate; the radical 

 and lowest cauline oblanceolate and stout-petioled, 8 to 11 in. long, 1£ 

 in. wide, the upper cauline sessile or partly clasping; heads often very 

 numerous, cymose-corymbose, small (5 lines high), short-pediceled; 

 involucre campanulate, slightly calyculate; rays none or rarely few. 



Abundant in the Suisun Marshes and found in other marshes about 

 San Francisco Bay; thence northward. May- July. 



8. S. Douglasii DC. Branching from the suffrutescent base and 

 forming a bushy plant 3 ft. high, leafy up to the inflorescence; 



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