1907] Hall. Compositae of Southern California. 279 



Var. Californicum f. crenulatum Hall, nom. nov. Troxi- 

 mon elatum Greene, Pitt. i. 71 (1887) ; not Stylopappus elatus 

 Nutt. Agoseris major Jepson, Pitt. ii. 179 (Sept. 15, 1891), and 

 Bull. Torr. Club xviii. 325 (Nov., 1891). Ribs of at least the 

 outer achenes corky-thickened and conspicuously undulate, ren- 

 dering the body obtuse or truncate at summit. Plains of the 

 lower Sacramento River, ace. to Greene ; Willow Branch, Marys- 

 ville Buttes, Apr. 20, 1891, Jepson; Paso Robles, San Luis Obispo 

 Co., Barber, no. A 19; same locality, May, 1907, Benj. Cobb, in 

 part; Ojai Valley, Ventura Co., Hall, no. 3198; Santa Inez Mts.. 

 1888, Brandegee; Zaca Lake Forest Reserve, Santa Barbara Co.. 

 Miss Eastwood, no. 736, in part; Tehachapi, Mrs. Brandegee 

 (Herb. Univ. Calif, no. 88022). 



Var. Californicum f. turgidum Hall, nom. nov. Crypto- 

 pleura Calif ornica Nutt., Trans. Am. Philos. Soc. ser. 2, vii. 

 431 (1841). Outer and sometimes all of the achenes more or less 

 inflated, often even 2 mm. thick and truncate at apex, sometimes 

 less inflated and tapering to the beak, inconspicuously striate or 

 their nerves quite obsolete. "Near Santa Barbara," ace. to Nut- 

 tall, who obtained only depauperate specimens ("about three to 

 four inches high") ; near Santa Barbara, 1888, Brandegee; grassy 

 valley near the coast of San Luis Obispo Co., Apr. 23, 1886, Mrs. 

 R. W. Summers, in part (distributed as Agoseris grandi flora] ; 

 Cuddy Valley, Mt. Pinos, Ventura Co., Hall, no. 6421; Santa 

 Inez Mts., 1888, Brandegee (some specimens approaching var. 

 Californicum f. idiale) ; Paso Robles, May, 1907, Benj. Cobb, 

 in part; Zaca Lake Forest Reserve, Santa Barbara Co., Miss East- 

 wood, no. 736, in part; Tehachapi, Mrs. Brandegee (Herb. Univ. 

 Calif, no. 88023) ; Simpsons, El Dorado Co., Mrs. Brandegee 

 (Herb. Univ. Calif, no. 88024). 



The above arrangement of the forms of this aggregate species 

 is intended to express the idea that they represent two lines of 

 descent, the one being distinguished by short ligules, the other by 

 elongated ligules. In each of these series we have three similar 

 forms, differing only in their achenes, and each form in the one 

 series is strictly analogous to a corresponding form in the other 

 series. 



The length of the ligule in this species furnishes us with a 



