246 University of California Publications in Botany. [ VoL - 3 



cymose or solitary at the ends of short branchlets, leafy-bracted : 

 proper involucre about 15 mm. high, shorter than the flowers and 

 pappus ; bracts about 10, linear, acute, traversed by a strong mid- 

 rib which becomes thickened at base : flowers bright yellow, bila- 

 biate, outer lip of the marginal ones 6 mm. long: achenes gland- 

 ular. 



In stony or gravelly soil of the Lower Sonoran Zone from the 

 Colorado Desert to Arizona and Mexico : West, Andreas, and 

 Palm Canons, all near Palm Springs ; Whitewater ; Chuckawalla 

 Wash ; San Felipe ; Mountain Spring Grade ; etc. 



TRIBE 12. CICHORIEAE. CHICORY TRIBE. 

 103. CICHORIUM L. 



Erect herbs, the leaves mostly near the base, those of the stiff 

 branching stem reduced and bract-like. Receptacle without 

 bracts. Bracts of the oblong involucre herbaceous, in 2 series; 

 the outer somewhat spreading; the inner erect, the lower part 

 half -enfolding the marginal achenes. Achenes 5-angled, trun- 

 cate, beakless. Pappus of 1 to 3 series of short blunt paleae. 



1. C. Intybus L., Sp. PL 813 (1753). CHICORY. 



Stem erect from a deep taproot, 6 to 12 dm. high: herbage 

 more or less hispid : radical leaves runcinate-pinnatifid, spatulate 

 in outline, narrowed to a petiole, 6 to 12 cm. or more long ; upper 

 leaves much smaller, lanceolate, with clasping base: heads in 

 sessile clusters along the nearly naked branches : flowers blue or 

 rarely white. 



A native of the Old World, adventive at San Diego, at Ber- 

 nardino, ace. to Parish, near Los Angeles, ace. to Abrams, and to 

 be expected elsewhere as a garden escape. 



104. ATRICHOSERIS Gray. 



Glabrous desert annual with broad basal leaves and a tall 

 solitary scape, cymosely branched above. Involucre of about 15 

 equal linear acute bracts and several small outer ones. Recep- 

 tacle scrobiculate. Achenes oblong with corky-thickened peri- 

 carp. Pappus none. 



