174 COMPOSITE. 



involucre not pubescent but very viscid-glandular: achenes slender- 

 fusiform, silky-pubescent; outer pappus slenderly squamellate. — Santa 

 Clara Co., and southward. June. 



2. C. Bolanderi, Gray. Sloutish, % — 1 ft- high; pubescence long- 

 silky: heads few and subsessile: bracts of involucre not glandular, 

 silky-villous : outer pappus of narrow paleas nearly half as long as the 

 achene.— On stony hilltops toward the sea; flowering in summer. 



3. C. echioides, Benth. Rigid, brittle, 2—3 ft. high, often suffrutes- 

 cent, hoary with a dense hirsute and hispid pubescence: leaves rigidulous, 

 small: heads less than % in. high, in short fastigiate corymbs; bracts 

 hirsutulous: achenes silky but the hairs not appressed: setulose outer 

 pappus not conspicuous. — Sandy plains, and banks of streams, from 

 Solano Oo. southward, east of the mountains. Aug. — Oct. 



* * Rays none; outer pappus obsolete. 



4. C. rndis. Erect or decumbent, 1 — 3 ft. high, rigid, brittle, rough- 

 hairy but not hoary, glandular, heavy-scented: involucres in a narrow 

 leafy panicle: bracts of involucre acute, midrib prominent, margin 

 scarious: achenes oblong, pubescent; pappus copious, slender, scabrous, 

 seldom a trace of the short outer series. — Common along stream banks 

 in Napa Co. ; heretofore referred to C. (Ammodia) Oregana, from which 

 it is altogether distinct. July— Oct. 



8. STEJf OTUS, Nult. Glabrous resiniferous evergreen shrub. Leaves 

 alternate, linear, entire. Heads solitary at the ends of the branches. 

 Involucre hemispherical; bracts in 2 or 3 series, membranaceous, 

 scarious-margined, closely appressed. Flowers yellow; rays few; disk- 

 corollas dilated above, deeply 5-toothed. Style-appendages filiform, 

 flattened, puberulent: Achenes oblong, somewhat compressed, densely 

 villous; pappus very slender, permanently white. 



1. S. linearifolius (DC), Torr. & Gray. Very leafy, 1—4 ft. high; 

 leaves 1 in. long, acute, spreading, punctate, 1-nerved: head about 1 in. 

 broad, on a peduncle: rays 12 — 14: achenes densely white-villous; pappus 

 copious, fragile or deciduous. — Mt. Diablo towards the summit, and 

 southward. May — July. 



9. ERICAMERIA, Null. Evergreen shrubs of low stature, with 

 linear entire subterete punctate leaves, and terminal cymose or corymbose 

 clusters of small heads. Involucre turbinate; bracts mostly lanceolate, 

 very regularly imbricated, margins subscarious. Flowers yellow. Disk- 

 corollas slender-tubular with subcampanulate throat and deeply cleft 

 limb. Style-appendages filiform, acuminate, hirsutulous. Achenes 

 prismatic. Pappus of scabrous slender bristles dull-white or yellowish, 

 becoming reddish. 



