538 



COMPOSITE. 



10. B. Douglasii (H. & A.) Greene. Comparatively glabrous, 

 the stems for the most part puberulent only above and the leaves 

 merely finely ciliate; lower leaves pinnately parted or lobed, upper 

 entire; acbenes villous-pubescent or partly glabrate; chaffy bracts to 

 most of the disk-flowers as also in the next; pappus of about 10 to 18 

 unequal and rigid subulate awns, which are somewhat scabrous or 

 slightly hirsute near the dilated base, the marginal ones rather 

 shorter than the corolla, the smaller hardly half as long. — (Layia calli- 

 glossa Gray.) 



Common around San Francisco Bay. 



Var. oligochaetus (Gray). Leaves less lobed; pappus of only 2 

 slender (and often short) marginal awns or with some intervening 

 rudiments. — Conn Valley, Napa Co.; Santa Rosa. May. 



11. B. Fremonti (T. & G.) Greene. About 1 ft. high, minutely 

 pubescent; leaves mostly pinnately parted, not ciliate; pappus-paleie 

 ovate- to oblong-lanceolate, tapering into a subulate awn, nearly 

 equaling the corolla, the margin entire, accompanied by some long- 

 villous free hairs. — (Layia Fremonti Gray.) 



Upper Sacramento Valley southward to the San Joaquin. 



12. B. nutans Greene. Low, 5 to 7 in. high, the branches slender 

 and divergent; herbage hirsute, especially the leaves, the stems 

 reddish brown; leaves linear, all entire, the lower pairs opposite; 

 peduncles somewhat stipitate-glandular; heads erect in flower, nod- 

 ding in bud and fruit; rays 5 to 7, yellow, to 3k lines long; achenes 

 1J lines long, hispidulous; pappus-bristles narrowly lanceolate, 

 acuminate, 8 to 10, unequal, with barbellate margins. — (Callichroa 

 nutans Greene.) 



Higher mountain slopes on the east side of Napa Valley; Hood's 

 Peak, Sonoma Co. May. Excellent species. 



58. LAGOPHYLLA Nutt. 

 Soft-villous or hirsute annuals with rigid and brittle stems, in wins 

 usually becoming naked below by the early falling of the lower 

 leaves. Leaves alternate or the lower opposite, mostly entire. 

 Flowers pale yellow. Heads small, subtended by foliaceous bracts. 

 Bracts of the involucre 5, thin-herbaceous; flat on the back, with 

 margins at base infolded and completely enclosing an obcompressod 

 achene, with which it is deciduous. Receptacle small and flat, bear- 

 ing about 5 perfect disk-flowers, these surrounded by a single row of 

 distinct chafty bracts. Rays cuneate, palmately 3-cleft. Ray- 

 achenes obcompressed, obovate-oblong, smooth, nearly straight, 

 pointless; disk-achenes slender, sterile. Pappus none. Bracts and 

 glabrous achenes all deciduous at maturity. (Greek lagos, a hare, 

 and phullon, leaf, the upper leaves sometimes copiously villous on the 

 margin.) 



1. L. ramosissima Nutt. Stem simple, at length paniculately 

 very much branched; leaves (especially the upper) silky-hirsute with 

 soft hairs, the short ones subtending the heads densely villous-ciliate; 



