438 COMPOSlTiE. 



under Laslhenia. Hirsutulous, 1 ft. high more or less, freely branch- 

 ing: leaves narrowly linear: heads 3 — 4 lines high: bracts of involucre, 

 and the rays, 7 — 12, the latter 3—4 lines long: achenes glabrous; pappus 

 wanting. — Kich fields and sunny slopes. April, May. 



3. B. hirsiitnla. Laslhenia hirsutiila, Greene, Man. 206 (1894). 

 Stout and low, from a strictly annual root, mostly branching very freely: 

 the whole herbage rather roughly short-hirsute: leaves broadly linear, 

 often with saliently projecting scattered teeth, the lower conspicuously 

 connate, sheathing the stem: involucral bracts obovoid, obtuse or acu- 

 tish: rays oblong: achenes mostly very smooth, rounded at summit, 

 manifestly compressed; pappus of 2 brownish very slender-subulate 

 aristiform bristles — Plentiful on open rocky and grassy hills along the 

 seacoast, from Marin Co. southward. May, June. 



4. B. gracilis, Gray, Proc. Am. Acad. ix. 196 (1874); DO. Prodr. v. 

 664 (1836), under Burrielia. Whole habit and aspect of n. 2, but achenes 

 linear-cuneate, with pappus of white lanceolate or ovate slender awned 

 palea3, or the paleae sometimes almost obsolete. — Very plentiful and var- 

 iable; often very small, slender and simple, not rarely as large as B. 

 chrysodoina. April — June. 



* * Pubescence if any soft-hirsute or somewhat woolly; leares 



often cleft or divided. 



-^Pappus uniform, paleaceous. — Genus Burrielia, De Candolle. 



5. B. micro^Iossa. Burrielia microglossa, DO. Prodr. v. 664 (1836); 

 Greene, 1. c. 205, under Laslhenia. Slender, only a few inches high, 

 with a few narrow and almost cyliadric involucres of apparently rayless 

 heads, but the rays present, though very short and inconspicuous: 

 receptacle subulate: achenes fusiform-linear; pappus of 2 — 4 attenuate- 

 subulate palese. — Hills and valleys of the Coast Range from Alameda 

 and Santa Clara counties southward. April. 



6. B. leptalea, Gray, Syn. Fl. 325 (1884), and Proc Am. Acad. vi. 

 546 (1865), under Burrielia. Glabrous, the filiform stems only a few 

 inches high: leaves almost filiform, % in. long: involucre 2 lines high, 

 more campanulate, the rays obvious and numerous: pappus of 2 or 3 

 small paleae tapering to long awns. —Interior of Monterey Co., on the 

 Salinas and Nacimiento rivers. April. 



7. B. debilis, Greene, in Gray, 1. c. Pubescence minute, somewhat 

 woolly; slender and weak stems 6—10 in. high, sparingly branched: 

 leaves flaccid, linear, entire, 1 in. long or more: involucre campanulate, 



