1907] Hall. Compositae of Southern California. 71 



leaves broadly oblong or slightly narrowed to the closely sessile 

 base, shallowly toothed at the very obtuse summit, 3 or 4 cm. long, 

 8 to 12 mm. broad : inflorescence paniculate, with numerous bract- 

 like leaves: involucre turbinate, 8 or 9 mm. high; bracts imbri- 

 cated in about 5 series, their tips slightly spreading: rays 20 to 

 25 : style-appendages flat, obtuse, tipped with a brush-like tuft of 

 bristles. Oxnard, Ventura Co., Davy, nos. 7815 (type), 7814, 

 7813. 



Var. virgata (Benth.) Gray, Bot. Calif, i. 320 (1876). C. 

 virgata Benth., Bot. Sulph. 23 (1844). Six to 10 dm. high, the 

 stems slender : tomentum early deciduous, especially above, leav- 

 ing the herbage green ; inflorescence viscid-glandular, the numer- 

 ous glands usually short-stipitate : heads numerous, in a diffuse 

 panicle. The common form along the coast from western San 

 Diego Co. north to Monterey. 



Var. Bernardina (Abrams) Hall, comb. nov. C. virgata Ber- 

 nardina Abrams, Fl. L. A. and Vic. 401 (1904). Commonly 6 to 

 8 dm. high; the stems slender: tomentum deciduous from the 

 involucres and uppermost portion of the peduncles, the exposed 

 parts then glandular : heads few, terminating the long divaricate 

 branches of a very loose panicle or raceme. The common form 

 of the foothills and plains back from the seacoast, especially in 

 the San Bernardino Valley. 



Var. linifolia Hall, var. nov. Herbaceous throughout, 4 dm. 

 or less high; stems numerous, erect, widely branched above, the 

 slender branches terminated by solitary heads: herbage densely 

 and permanently white-tomentose, even to the involucres : leaves 

 crowded below, more scattered above, all narrowly linear, 2 to 5 

 cm. long, mostly 1 mm. (some 3 mm.) broad; not at all rigid: 

 involucre broadly turbinate, 8 or 9 mm. high; bracts closely im- 

 bricated in about 5 ranks, the tips slightly spreading : rays about 

 20, violet, 6 mm. long. About one kilometer south of Del Mar, 

 San Diego Co., Aug. 5, 1906, Mrs. K. Brandegee. The type of the 

 variety is Univ. Calif, sheet no. 73319. The specimens grew in 

 hard siliceous soil on an exposed wind-swept bluff overlooking 

 the sea. The surrounded vegetation was all stunted in growth, 

 and this variety exhibits in its narrow often revolute leaves, dense 

 tomentum, and low stature, the xerophytic characters to be ex- 



