CYNAROCEPHAL^; 217 



spinose tip and no glandular spot: flowers dull white: anther tips acute. 

 Along streamlets and in springy places about Crystal Springs, San 

 Mateo Co. ; a very peculiar species. July. 



* * Only the outer involucral bracts sguarrose; terminal spine in all erect. 

 * Heads not conspicuously long-peduncled. 



2. C. remotifolius, Hook. Loosely arachnoid when young, glabrate 

 in age, 3 5 ft. high; leaves from sinuately to deeply pinnatifid: heads 

 on long rather slender peduncles, 1^ in. high, ovate; bracts rather loose 

 and thin, linear-lanceolate, the outer narrowed to a small weak prickle, 

 the middle ones more or less cartilaginous and lacerate as well as some- 

 what dilated toward the tip; the inner linear-subulate with narrow fim- 

 brillate scarious margin: corollas ochroleucous, the limb only a third as 

 long as the throat. Marin Co. 



3. C. crassicanlis, Greene. Very stout and tall, 47 ft. high: stem 

 strongly striate, simple to near the summit, there becoming rather close- 

 paniculate, with 3 7 short-peduncled headg 1^ 2 in. high: herbage 

 permanently hoary-lanate: leaves small, pinnately parted, the segments 

 spine-tipped and the whole margin spinulose-ciliate : involucral bracts 

 rather loose, linear-lanceolate to lanceolate-acuminate, all tipped with a 

 slender spine, the outer and middle ones with pectinate-spinescent margins: 

 segments of the whitish or pinkish corolla about as long as the throat. 

 Abundant in moist grassy bottoms of the lower San Joaquin. 



4. C. amplifolius, Greene. Somewhat fleshy, green and glabrous 

 except a sparse arachnoid tomentum on the lower face of the leaves: 

 stem stout, 3 4 ft. high: leaves very broad and ample, conspicuously 

 decurrent, the ample lobes crowded and overlapping each other, trifid and 

 spinose-ciliate : heads short-peduncled and clustered, 1% in. high, leafy - 

 bracted at base; the outer bracts loosely spreading and arachnoid, the 

 inner more appressed and glabrous, their spinose tips often reflexed: 

 corollas of a rich bright purple, their linear obtuse lobes much shorter 

 than the throat. On stream banks back of Point San Pedro. 



5. C. edulis (Nutt.), Greene. Eobust, 36 ft. high, pubescent, 

 leafy up to the short panicle: leaves oblong or narrower, sinuate- pinnali fid, 

 weakly prickly: heads 1% in. high, depressed-globose, leafy-bracted at 

 base: involucre arachnoid when young: corollas deep but dull purple; 

 segments shorter than the throat. Along streams in the Oakland Hills, 

 etc. June, July. 



! -t Heads solitary on stoul peduncles. 



6. C. Califoniicus (Gray), Greene. Bather slender, 24 ft. high, 

 canescently woolly: leaves sinuate-pinnatifid, moderately prickly, heads 

 middle-sized, the lower brads coriaceous-acerose, spreading and incurved, 



