Chicory Tribe 447 



few-flowered; achenes fusiform, rugose-tuberculate between the 

 salient rib-like angles, intervening grooves wanting; pappus- 

 bristles numerous, distinctly plumose to the base, bright white, 

 soft, early deciduous. 



Common in fields and along waysides about Pasadena and eastward to 

 San Bernardino. July-August. 



3. P. cichoriacea (Gray) Greene. Perennial, 3-8 dm. high, 

 rather stout, tomentulose at least when young ; leaves lanceolate, 

 sparsely denticulate to runcinate-laciniate ; heads sessile along 

 naked branches; involucre 12 mm. high; mature achenes short- 

 linear, smooth, slightly and acutely 5-angled; pappus sordid, 

 persistent. 



Frequent in rocky canyons of the San Gabriel Mountains. July-Septem- 

 ber. 



73. NEMOSEBIS Raf. 



Glabrous and slightly succulent branching annuals 

 with pinnatifid leaves and rather large heads of white or 

 rose-tinged flowers. Involucre conic or cylindric, of 

 7-15 linear acuminate equal bracts, somewhat fleshy at 

 base, and a few loose calyculate outer ones. Achenes 

 terete, somewhat fusiform, obscurely few-ribbed, attenu- 

 ate into a slender beak. Pappus white, of 10-15 slender 

 bristles, softly long-plumose from the base to near the 

 tip. 



1. N. Californica (Nutt.) Greene. Rather stout, glabrous; 

 stems white, 6-9 dm. high; leaves oblong, pinnatifid, sessile and 

 clasping, the upper reduced ; heads many in a paniculate-corym- 

 bose inflorescence, 1.5-2 cm. high; ligules rather short; outer 

 achenes pubescent; beak slender, equaling the body; pappus 

 dull white. (Rafinesquia Californica Nutt.) 



Common on rather shady slopes in the foothills and in the chaparral belt 

 of all the mountains. May-August. 



74. TBAGOPOGON L. 



Biennial or perennial erect usually branched some- 

 what succulent herbs, with slender fleshy tap-roots, 

 alternate entire linear-lanceolate long-acuminate leaves 



