140 University of California Publications in Botany. [VOL. 3 



ence of importance, I follow Bentham & Hooker and Hoffmann 32 

 in disposing of Leptosyne as a section of Coreopsis. 



Annuals: disk-achenes either thickened and corky-winged or conspicuously 

 ciliate. 



Pappus none: disk-achenes corky -winged 1. C. Douglasii. 



Pappus of 2 linear awns: mature disk-achenes ciliate with long hairs. 



Outer bracts of the involucre linear 2. C. Bigelovii. 



Outer bracts of the involucre broadly ovate 3. C. calliopsidea. 



Perennials: achenes glabrous, flat, narrowly winged. 



Peduncles scattered, 1.5 dm. or more long: rays 3 cm. long 



4. C. maritima. 



Peduncles corymbosely clustered, mostly less than 1.5 dm. long: rays 2.5 

 to 3 cm. long 5. C. gigantea. 



1. C. Douglasii (DC.) Hall, comb. nov. Leptosyne Douglasii 

 DC., Prodr. v. 531 (1836). L. Calif.ornica Nutt., Trans. Am. 

 Philos. Soc. ser. 2, vii. 363 (1841). L. Newberryi Gray, Proc. 

 Am. Acad. vii. 358 (1868). 



Stems scapose, 1.5 to 4 dm. high, simple and monocephalous, 

 usually several from the slender taproot and ascending, some- 

 times few or solitary, then slender and erect : leaves mostly in a 

 dense basal tuft, 3 to 10 (or 15) cm. long, filiform-linear and 

 entire or more commonly 2 to 3-parted into slender lobes : bracts 

 of the outer involucre linear, 5 to 7 mm. long ; inner involucre of 

 ovate scarious-margined bracts : rays commonly 1 cm. long but 

 much reduced in depauperate plants, yellow, or not infrequently 

 white on the upper third : ring of disk-corollas usually distinctly 

 bearded : achenes of both ray and disk obovate with broad wings 

 which become corky in age, also corky-ridged down the inner face, 

 rough with short rigid hairs: pappus represented by a minute 

 cup-like border terminating the achene. 



Plains and foothills almost throughout the Lower and Upper 

 Sonoran zones of Southern California, particularly common west 

 of the mountains, often beneath chaparral and then much re- 

 duced in size and delicate. Mar.-May. There is a seashore form, 

 plentiful along the coast of San Diego Co., with short thick leaves 

 in a dense basal cluster, stout stems, and large heads. It corre- 



32 Hoffmann, in Engler & Prantl, Natiirl. Pfianzenf . iv. abt. 5, 243 

 (1890). 



