1907] Hall. Compositae of Southern California. 241 



inner bracts straight, their herbaceous tips often crispate : corollas 

 cream-color, white, or rarely purple; lobes shorter than the 

 throat : anther-tips ovate-acuminate. 



Occasional in dry sandy soil : San Pedro Martir, Lower Cali- 

 fornia, Brandegee; Palm Springs, Colorado Desert; San Jacinto 

 Mt., to 1600 m. alt.; Reche Canon, near San Bernardino; Santa 

 Catalina Island ; Los Angeles ; Ojai ; Elizabeth Lake ; Mt. Pinos ; 

 thence north to Placer Co. 



Var. Bernardinus (Greene) Parish, MS., comb. nov. C. Ber- 

 nardinus Greene, Proc. Phila. Acad. for 1892, 361 (1893). Stem 

 slender, not very tall : leaves narrow, rather sparsely spinose : 

 heads globose when young, hemispheric in age : involucre only 

 1.5 to 2 cm. high, sparsely tomentose, glabrate; bracts appressed. 

 somewhat imbricated, the outer minutely ciliate and with weak 

 erect or spreading spines : corolla-lobes about equalling the throat. 

 Dry hillsides of Little Bear Valley, San Bernardino Mts., Par- 

 ish, no. 1686 (type collection) ; vicinity of San Bernardino, Par- 

 ish, no. 3680; near Pomona, May 11, 1897, Chandler; Palomar. 

 Aug., 1898, Brandegee, and May, 1901, Jepson; Valley Center. 

 McClatchie, no. 1159 ; thence to San Diego, various collectors. 

 The prevailing thistle in the Coastal Subarea of San Diego Co. 



6. C. Mohavensis Greene, Proc. Phila. Acad. for 1892, 361 

 (1893). 



Somewhat stout, strict or moderately branched, 10 to 15 dm. 

 high : leaves from narrowly lanceolate to oblong in outline, the, 

 lobes not overlapping, bearing numerous yellow spines, the mid- 

 dle cauline decurrent on the stem for one-third their length or 

 more and all except the very lowest manifestly decurrent : invo- 

 lucre oblong, becoming hemispheric, 2 cm. high; its bracts ovate 

 and fully equalled by their slender at length deflexed spines : cor- 

 olla said to be reddish, the acute lobes equalling the throat : anth- 

 er-tips attenuate-subulate: pappus of outer achenes scabrous, of 

 the others plumose except at the tip. 



In alkaline meadows about springs in the Mohave Desert: 

 Rabbit Springs, Parish, no. 1834 (duplicate type) ; Warm Springs 

 (Newberry), Parish, no. 1261; Providence Mts., May 26, 1902. 

 Brandegee (in a robust, large-headed form) ; Cushenberry 

 Springs, ace. to Parish. 



