SUNFLOWER FAMILY 527 
4-6 cm. long, rarely (in forms intermediate to C. proteanum) more numerous, smaller, subglobose, 
2-3 cm. long; involucre bowl-shaped = campanulate, era 
glabrous spines, the tome entum sake 
n etween phyllaries iioatly linear to n arrowly lanceolate or the lowest sometim 
axel pag soasehy spreading or pn) st 
rec ved a uch as 4.5 ¢ the 
the d 
iddle arcuate- divari icate to ascendi 
m. m. long, the ends of the lobes copitelate: shickerieil below the 
acute tip; achenes brown, oblong- cuneate, 7-8 oy g bea and about 
lon 
3 mm. wide; pappus white, 
te slopes and flats, Transition Zone; southwestern Oregon southward in the Coast Ranges to Mendo- 
ne Coun. hetotadgels mBior and in the Sierra Nevada to the Lake Tahoe region in California and Nevada. 
ocality: ‘‘ext nort 
2-3 cm 
Type 
California.” June—Oct 
5915. Cirsium nidulum 
5918. Cirsium Cee 
