COMPOSITE. 439 



2—3 times high: rays several, short aud broad, little more than a Hue 

 long, nearly as broad: pappus of 3 or 4 ovate-lanceolate awned palese, or 

 sometimes wanting.— Foothills of the Sierra in Fresno and Kern coun- 

 ties, Eisen, Greene. April. 



8. IJ. platycarpha, Gray, Proc. Am. Acad. ix. 196 (1874); and Bot. 

 Mex. Bound. 97 (1859), under Burrielia; Greene, 1. c. 205 (1894), under 

 Lasthenia. Purplish-stemmed and very wiry, 5 — 8 in. high, with erect or 

 ascending branches: leaves linear, or pinnatitid into filiform segments: 

 involucral bracts 6 or 7, 3-nerved, the middle nerve carinately prominent: 

 pappus-paleae bright-white, ovate, slender-awned, the awn as long as the 

 achene. — Subsaline plains of Solano and Contra Costa counties. April, 

 May. 



9. B. carnosa, Greene, Bull. Torr. Club, x. 86 (1883), and 1. c. under 

 Lasthenia. Leaves all filiform, entire: bracts of involucre with a single 

 strongly carinate nerve: pappus of 4 or 5 subulate-awned ovate palese. — 

 Border of salt marsh north of Vallejo: rare or local. April. 



-1— -i—Pappus of several blunt palese and one or more slender aivns, or 

 sometimes wholly loantlng. — Genus Dich^eta, Nuttall. 



10. B. tenella. Diehxta tenella, Niitt. Trans. Am. Phil. Soc, vii. 383 

 (1841); Greene, 1. c. 205, under Lasthenia. Erect, sparingly branching, 

 4— 6 in. high, somewhat canescent with deciduous woolly hairs: leaves 

 linear, entire, or some of the lower laciniate: rays oval or oblong, short: 

 paleJB and awns each usually 2, but pappus not rarely wholly wanting. — 

 Low plains of Contra Costa Co. April, May. 



11. B. uliginosa, Gray, Proc. Am. Acad. ix. 197 (1874); Nutt 1. c, 

 under Dichoeta; Greene, 1. c, under Lasthenia. StoiTter than the last, 

 freely branching, often decumbent, somewhat fiocculent: leaves linear- 

 ligulate, the lower, if any, entire, the upper laciniate-pinnatifid into 

 linear entire or cleft segments: involucral bracts and long-exserted rays 

 10 — 13: pappus of about 4 slender awns, and as many or twice as many 

 broad truncate laciniate-fimbriate palese. — Common in low grounds. 



. April, June. 



12. B. maritima, Gray, Proc. Am. Acad. ix. 196 (1874), and 1. c. vii. 

 358 (1868), under Burrielia. Diffuse, fleshy, the growing parts with a 

 little woolliness: leaves oblong-linear, 1 in. long, entire, or sparingly 

 laciniate-toothed : involucral bracts short and obtuse; rays 6 or 8 also, 

 short and broad: pappus of 3-5 subulate awns, and as many narrow 

 laciniate palese. — Farrallones Islands, this long the only known locality; 

 but now recently detected on an islet off Vancouver Island. 



