382 ASTERACEAE. 



lanceolate, rarely denticulate or toothed, about 5 cm, long, green 

 and glabrate; heads commonly solitary, the disk about 2 cm. broad, 

 brownish or purplish; involucre white-villous; rays 16-20, 2.5 cm. 

 long or more, golden-yellow; achenes obo\ate with very shallow 

 notch and no pappus, the margins very long villous. 



Very common in the lower portions of the chaparral belt of all 

 the mountains; also on the low hills about Los Angeles and along 

 the coast. Ranging from Monterey to San Diego, In the San 

 Bernardino and Riverside Valleys and eastward it is replaced by E. 

 farinosa Gray, which has the leaves covered with a silvery tomentum. 



32. VERBESINA L, 



Perennial or annual, pubescent or scabrous herbs with 

 alternate or opposite leaves, often decurrent, and corym- 

 bose or solitary heads of both ray- and disk-flowers, or 

 the rays sometimes wanting. Involucral bracts imbri- 

 cated in few series. Receptacle convex or conic, chafify, 

 the chaff embracing the disk-flowers. Ray-flovvers pistil- 

 late or sterile. Disk-flowers perfect, mostly fertile. 

 Achenes flattened or those of the rays 3-sided, their 

 margins winged or wingless. Pappus of 1-3, usually 2, 

 subulate awns, sometimes with 2-3 intermediate scales. 



1. V. encelioides (Cav.) Gray. Annual; stems densely puberu- 

 lent, much branched or rarely simple, 3-6 dm, high; leaves deltoid- 

 ovate or deltoid-lanceolate, 5-10 cm, long, coarsely dentate, green 

 and minutely pubescent above, pale and densely canescent beneath, 

 all alternate or the lowest opposite, narrowed at the base to a mar- 

 gined petiole, these often with dilated appendages at the base, heads 

 several or many, 2.5-5 cm. broad; involucral bracts lanceolate, 

 canescent; rays 12-15, golden-yellow, 3-toothed; achenes of the disk- 

 flowers obovate, winged; pappus of 2 subulate awns, those of the 

 rays rugose, thickened, often wingless. 



Occasional in moist alluvial soils along our valley streams. Los 

 Angeles; San Fernando Valley. April-June, 



33. LEPTOSYNE DC. 



Glabrous annual or perennial herbs or rarely shrubby, 

 with dissected leaves, and usually long scapiform erect 

 peduncles, bearing rather large heads of yellow flowers. 

 Involucral bracts in 2 series, the outer of narrow foliace- 

 ous spreading bracts, the inner of broad membranous 

 erect ones. Rays broad, pistillate and often fertile, 

 sometimes neutral. ChafT of receptacle linear, thin, 

 scarious, deciduous with the fruit. Achenes flat or 

 somewhat concavo-convex, margined. Pappus a minute 

 callous cup or a pair of palese. 



