SUNFLOWER FAMILY. 537 



rarely ti.)Othed, about J in. long; pappus-bristles 23 to 28, sparsely 

 plumose with straight soft hairs; disk-achenes thickly covered with 

 short hairs. 



Seabeach sands from Humboldt Co. to Monterey and southward. 

 Ray-achenes pubescent, ace. to Gray; glabrous in Point Reyes speci- 

 mens collected by Parry. 



5. B. hieracioides (DC.) Greene. Coarse erect plant, 2 to 3 ft. 

 high; stem mostly simple below and branching above, hispid with 

 hairs arising from dark spots; lower leaves oblong, 2 to 4 in. long, 

 3 to 9 lines wide, laciniate-dentate, usually somewhat narrowed at 

 base; upper leaves broadest at the sessile base, the teeth fewer and 

 mostly towards the apex; heads J in. broad or rather less; rays yellow, 

 short, little exceeding the disk; pappus-bristles about 15. — (Layia 

 hieracioides H. & A.) 



Oakland Hills, on wooded slopes. 



6. B. gailtardioides (H. & A.) Greene. Rather freely branch- 

 ing, 8 in. high or more, hispid, the stems dark-dotted; leaves more or 

 less laciniate-pinnatifid, or the upper entire; heads larger than in 

 B. hieracioides; rays orange-yellow, -5 to 9 lines long; pappus dull 

 white or rusty, the bristles 15 to 20. 



Mendocino Co. to the upper San Joaquin Valley. 



7. B. nemorosus Greene. Slender, usually sparingly branched 

 above, 1 to 2 ft. high, hispidulous; leaves narrowly or broadly linear, 

 entire or sparingly dentate; heads the size of the preceding; rays 

 white, pale yellow below the middle; pappus-bristles short, little or 

 not at all surpassing the abundant soft brown hairs. 



Mt. Tamalpais; Oakland Hills; Mt. Diablo. May-June. 



8. B. platyglossus (Gray) Greene. Tidy Tips. Stem simple or 

 more commonly branching below, erect or sometimes diffuse, 9 to 16 

 in. high; herbage short-hirsute and stipitate-glandular; leaves linear 

 and nearly all entire or the lower commonly pinnatifid into short 

 linear or "oblong lobes; peduncles turbinate-thickened beneath the 

 head; involucral bracts linear, dentieulate-ciliate on the lower half; 

 rays 13, -3 to 6 lines long, sulphur-yellow, the tips white; disk- 

 achenes somewhat flattened, IJ lines long, densely clothed with 

 upwardly pointing silky hairs; pappus-bristles 15 to 20, nearly as 

 long as the corolla. — (Layia platyglossa Gray.) 



Valleys and plains, common in the Coast Ranges and in the Sac- 

 ramento and San Joaquin Valleys. Apr.-May. 



B. pen'tachj:tus (Gray) Greene. The only other species with 

 naked bristles; rays golden yellow; bristles 5, sometimes fewer. — 

 Sierra Foothills. 



9. B. chrysanthemoides (DC.) Greene. Habit and aspect of 

 B. platyglossus or of B. Douglasii; flowers and heads the same; 

 achenes entirely glabrous, broader, without a disk at summit, the 

 corolla covering the top of the ovary; pappus none. —(Layia chrjsan- 

 themoides Gray.) 



Common about San Francisco Bay. 



