130 Rydberg : Rocky Mountain flora 



This species is related to CJirysopsis liispida and C. coliimhiaiia, 

 but differs from both in the larger heads ; it differs also from the 

 former in the more copious pubescence and the more decidedly 

 oblanceolate and petioled leaves ; from the latter in the longer 

 pubescence, the more copious resinous granules and the more 

 decidedly petioled leaves. 



Montana: Jocko Creek, June i6, 1901, MacDoiigal ^75 

 (type, in herb. N. Y. Bot. Gard.) ; also 26^. 



Chrysopsis barbata sp. nov. 



Perennial ; stems about 3 dm. high, more or less tinged with 

 purplish or red, hirsute with long white hairs and somewhat puber- 

 ulent; leaves sessile, lanceolate, 3-5 cm. long, the upper acuminate, 

 long-hirsute and somewhat resinous-granuliferous ; heads subses- 

 sile ; involucres i cm. high and 12-15 "im. broad; bracts linear, 

 acute, sparingly long-hirsute and resinous-granuliferous ; ligules 

 about 7 mm. long, golden yellow ; achenes strigose ; pappus 

 brownish tawny, the outer squamulate, 1-1.5 mm. long. 



This species is related to Chrysopsis liispida but differs in the 

 long, dense pubescence, a much less abundance of resinous gran- 

 ules, larger leaves and heads, and more conspicuous outer pappus. 

 It grows on sandy plains. 



Idaho : Valley of Spokane River, Kootenai County, July 17, 

 1893, Saiidbcrg, MacDoiigal, & Heller 664. (type, in herb. N. Y. 

 Bot. Gard.). 



Chrysothamnus attenuatus (Jones) Rydb. sp. nov. 



Bigelovia Hozvardi attcniiata Jones, Bull. Calif. Acad. Sci. II. 5: 



691. 1895. 

 Chrysothavimis affinis attoiuaUts A. Nels. Bot. Gaz. 28 : 374. 



1899. 



Chrysothamnus salicifolius sp. nov. 



A shrub 3-10 dm. high ; branches erect, white or gray, finely 

 pannose-tomentulose ; leaves linear, 3-nerved, 4-6 cm. long, 3-6 

 mm. wide, minutely tomentulose ; heads in a dense corymbiform 

 cyme; involucres 7-8 mm. long; bracts elliptic, oval or ovate, the 

 outer acutish, the inner obtuse or rounded at the apex, erose- 

 ciliate, the outer slightly tomentose, the inner glabrous ; corollas 

 about I cm. long; teeth 1.5-2 mm. long, lanceolate, obtusish ; 

 achenes coarsely strigose, angled. 



