1907] HallCompositae of Southern California. 191 



exceeding one-half the length of the corolla, sometimes reduced 

 to a mere crown ; no outer series. Western end Antelope Valley. 

 Davy, no. 2661; Gorman Station, Jun., 1887, Parish; Estrella. 

 San Luis Obispo Co., Jared (pappus very short, this form being 

 therefore near C. Nevii Gray) ; Fort Tejon, Kern Co., Hall, no. 

 6310; near Cahuenga Peak, Los Angeles Co., Chandler, no. 2008 

 (very slender; some paleae elongated, acute); Greenhorn Mts.. 

 Kern Co., Hall & Babcock, no. 5086; Box Springs Mt., near 

 Eiverside, Zumbro, no. 525. Mr. Zumbro's specimens beautiful- 

 ly combine the characters of this variety and the next. They 

 possess exactly the habit and involucres of var. tenuifolia but the 

 marginal corollas are enlarged and the limb palmate, as in f. 

 curta. In the disk-flowers the pappus-paleae are 5 in number, 

 one slightly longer than the others and nearly one-half as long 

 as the corolla : ray-pappus short. My no. 6326, from Mt. Pinos. 

 Ventura Co., has light-yellow or whitish flowers, suggestive of 

 a hybrid origin between this variety and C. stevioides brachy- 

 pappa. 



Var. tenuifolia (Nutt.) Hall, comb. nov. C. tenuifolia Nutt.. 

 Trans. Am. Philos. Soc., ser. 2, vii. 375 (1841). Slender in all its 

 parts: leaves or their divisions usually filiform and elongated: 

 involucre about 7 mm. high; its bracts linear, thin, acute: mar- 

 ginal corollas often enlarged but seldom exceeding the disk or 

 with palmate limb : pappus-paleae of disk-flowers equalling the 

 corolla, acute ; of the marginal flowers similar or much shorter 

 and obtuse. Very common, usually in light soil, from 1500 m. 

 alt. in the mountains to the Pacific and from Santa Barbara to 

 San Diego the original locality. The following collections may 

 be selected as fairly typical of this variety : San Diego, Hall, no. 

 3937 ; San Jacinto Mt., Hall, nos. 2036, 2056 ; San Luis Key, San 

 Diego Co., Alderson, no. 1192; Santa Maria Rancho, San Diego 

 Co., Parish, no. 1395; Mt. Pinos, Ventura Co., Hall, no. 6485. 

 Specimens gathered near Riverside (Hall, no. 3800) are perhaps 

 best referred here although some of the inner paleae are obtuse 

 and the marginal corollas sometimes irregular, thus approaching 

 the var. heterocarpha. 



Var. tenuifolia f. filifolia (Gray) Hall, comb. nov. C. filifolia 

 Gray, PL Fendl. 98 (1849). The most slender-leaved form, both 



