434 COMPOSITAE. 



crc-t; involucres broadly hemispherical; ligules about 5 lines long, the entire 

 head :; i to 1 in. wide. 



Borders of ^alt marshes. V;ir. CALIPOENICA Jepson. Leaves less or scarcely 

 a1 all connate; peduncles corymbose. — Plains and low hills. May. 



3. L. glaberrima DC Stems ascending, simple, 5 to 14 in. long; leaves 

 linear, entire; heads on short peduncles, nodding in the bud, about 3 lines 

 broad, seemingly rayless, the rays very small and inconspicuous; involucre 

 with about 1") short teeth; corollas all shorter than their achenes; achenes 

 minutely puberulent; pappus of 5 to 10 rigid paleae, 2 or 3 of them subulate- 

 pointed or short-awned, the others erose or laciniate; achenes with short stiff 

 hairs. 



1 lalf-aquatic in winter pools or in wet fields: near the coast and eastward 

 to Alvarado and Mt. Diablo. May-June. 



38. BAERIA F. & M. Gold Fields. 

 Low and mostly slender annuals (except no. 10). Herbage commonly 

 pubescenl but never hoary. Leaves opposite, linear and entire, or laciniatc- 

 pinnatifid. Flowers yellow, the heads on slender peduncles. Rays 5 to 15, 

 showy for the size of the heads, or sometimes very short. Involucre campanu- 

 la te or hemispherical, its bracts as many as the rays, ovate or oblong and be- 

 coming more or less carinate below the middle. Receptacle subulate-conical. 

 Achenes linear but somewhat broadened upward. Pappus of paleae or awns 

 or both or none. (The Russian zoologist, Baer.) 



1. Pappus of one or more awns and several blunt paleae, ustially alternating, sometimes 



wholly wanting in the same species; pubescence soft-hairy or none; at least 



some of the leaves pinnatifid or toothed. 



Insular species 1. B. maritima. 



Mainland species. 

 Plants slender. 



Pappus-awns usually 4 2. B. frcmontii. 



Pappus-awns usually 2 3. B. tcnclla. 



Plants stoutish; leaves broadly ligulate with few or several salient linear lobes 



4. B. uliginosa. 

 _'. Pappus uniform, paleaceous ; pubescence as i>i the last section; leaves entire or 



pinnatifid. 

 Involucre campanulatc or hemispherical; rays conspicuous. 



Leaves filiform and entire; salt marsh species 5. B. carnosa. 



Sonic leaves pinnatifid; alkaline plains 6. B. platycarpha. 



Involucres very narrowly cylindrical; rays so short that the heads arc seemingly rayless; 



leaves very narrow, entire 7. B. microglossa. 



3. Pappus uniform, of awn-like paleae or bristles; pubescence hirsutulous; leaves entire 



or often serrate in no. 10. 

 Annuals. 



Pappus usually none 8. B. chrysostoma. 



Pappus usually present, the awns paleaceous at base 9. B. hirsutula. 



Perennial; nearly simple; peduncles 4 to 8 in. long; pappus none or present 



10. B. macrantha. 



1. B. maritima 3ray. Stoutish. branching, 3 or 4 in. high, slightly 

 villous, especially on the margins of the Lnvolucral bracts; leaves linear or 

 oblong-linear, entire or some sparingly toothed; rays 6 to 8, short and broad; 

 pappus of :: to r, Blender awns, with intervening laciniate paleae; achenes ap- 

 pressed pubscenl with short hairs. 



l'arallone Hands. 



2. B. fremontii (Benth.) Gray. Erect, slender, 7 to 13 in. high; herbage 

 nearly glabrous below, rather finely pubescent on the peduncles and involucres, 

 or the involucres nearly canescent; leaves narrowly lineai- and entire, or 



mostly parted into linear lobes; involucre broad, its bracts 10 to 12, broadly 



