384 MEMOIRS OF THE NEW YORK BOTANICAL GARDEN. 



On prairies, especially in sandy soil, up to an altitude of 2500 m. 



Montana: Helena, 1890, F. D. Kchey ; Great Falls, 1885, F. 

 W. Anderson, ig6; Great Falls, 1891, R. S. Williams, 57,- Dear- 

 born River, 1883, Scribncr, 75. 



* Macronema grindelifolium. 



A much-branched undershrub, 1-2 dm. high ; young branches 

 glandular-puberulent ; leaves oblong or spaiulate, more or less 

 fleshy, 1-2 cm. long, obtuse or mucronate, hnely glandular-puberu- 

 lent, and with a more or less crisped margin ; heads 1.5 cm. high, the 

 bracts rather few, the outer ones foliaceous, oblanceolate, acute, 

 mostly longer than the disk; rays 6-12, rather conspicuous, often i 

 cm. long. 



Nearest related to M. sajfrnticosum, which, however, differs in 

 having narrowly oblanceolate acute leaves, which are 2-3 cm. long, 

 shorter and fewer, if any, ray-flowers, and a longer pubescence. 

 Grows among rocks, on the higher peaks, at an altitude of 2500- 

 3000 m, 



Montana: Gallatin Co., 1886, Tweedy, 11 14. 



Yellowstone Park: Sepulchre Mountain, 1884, Tweedy, ijg; 

 Electric Peak, August 18, iS()'] , Rydhcrg & Bessey, ^o^.^ {\.y^€)\ 

 1873, C. C. Parry, 161. 



Wyoming: Sheep Mountain, 1897, Tzueedy, §^2. 



Idaho: Mt. Chauvet, July 29, 1897, Rydberg & Bessey, 5046. 



* Macronema lineare. 



Perennial, with suffruticose base; stem erect, about 1.5 dm. high, 

 finely white-tomentose ; leaves numerous, linear, acute, glandular- 

 puberulent, bright green; heads 1-1.5 cm. high, the bracts rather 

 few, linear, somewhat foliaceous, but seldom equalling the disk ; 

 rays none. 



A near relative of M. discoideum, but it is distinguished by the 

 narrower and brirrhter green leaves, the more slender branches, the 

 finer and more appressed tomentum, the smaller heads, and the 

 shorter outer bracts. In sandy or gravelly places, at an altitude of 

 about 2500 m. 



Yellowstone Park: Elephant Back, 1885, Tweedy, 722; 

 Shores of the Yellowstone, J2^. 



Wyoming: Gros Ventre River, 1897, Tweedy, 5 sj {\.yy^€). 



* Chrysothamnus puberulus (D. C. Eaton) Greene, Erythea, 3 : 93 ; 

 Linosyris viscidijlora puherula Eaton, King's Exped. 5 : 157 ; Bige- 



