1907] Hall. Compositae of Southern California. 81 



of Santa Barbara Co., more common further north : Carpinteria, 

 Hall, no. 3166 (a very pubescent form) ; Santa Rosa Island, 

 Brandegee. 



8. A. Greatai Parish, Bull. So. Calif. Acad. i. 15 (1902). 

 Plant 4 to 7 dm. high, with erect or assurgent slender stems : 



herbage nearly glabrous to soft-pubescent above : leaves ample, 

 thin, from ovate to oblong or broadly oblanceolate, tapering be- 

 low to a broad or sometimes half-clasping base, mostly 6 to 12 

 cm. long by 2.5 to 4 cm. broad, acute, remotely serrate, the re- 

 duced linear upper ones entire: heads in. a very open panicle: 

 involucre fully 7 mm. high, its loosely imbricated bracts linear- 

 lanceolate and pubescent at least on the margins : rays 30 to 40, 

 light purple, 5 to 10 mm. long : style-appendages linear-subulate : 

 achenes short-hirsute: pappus sordid. 



Apparently confined to Upper Sonoran canons of the San 

 Gabriel Mts., where, however, it is not uncommon. The type 

 was collected in Eaton Canon, Sept. 30, 1900, by L. A. Greata. 



Very close to A. patulus Lam., if not indeed only a form of 

 that eastern species, possibly a garden escape. But the general 

 habit and leaves are somewhat different and the plants are not 

 red-stemmed. Also related to A. prenanthoides Muhl., from 

 which it is distinguished by its softer pubescence, which is not 

 arranged on lines on the stem nor scabrous on the upper surface 

 of the leaves. 



9. A. hesperius Gray, Syn. Fl. i. pt. 2, 192 (1884). A. en- 

 satus Greene, Pitt. iv. 223 (1900). A. aestivus Gray, Bot. Calif, 

 i. 614 (1876) ; not A. aestivus Ait. 



Stems tall, leafy throughout, coarsely pubescent in lines 

 above : leaves firm, narrowly lanceolate, sessile by a broad base, 

 acuminate above, perfectly glabrous except for the minutely 

 setose-ciliate margins; the lower 1 dm. or more long by about 

 13 mm. wide, sharply serrate; the upper smaller and entire: 

 heads numerous, in an open panicle: peduncles clothed with 

 linear overlapping bracts : involucre 6 mm. high ; its linear 

 ciliate bracts nearly equal, the inner with green tip and mid- 

 nerve, the outer similar or wholly herbaceous: rays more than 

 30, nearly 1 cm. long, purple. 



