422 MEMOIRS OF THE NEW YORK BOTANICAL GARDEN. 



Hymenopappus filifolius Hook. Fl. Bor. Am. i: 317 [111. Fl. 3: 



446; Syn. Fl. I-: 336; Man. R. M. 194]. 



On dry hills and plains, up to an altitude of 1500 m. 



Montana : Helena, 1889, ^- ^- Kelsey ; Beaver Head Co., 1888, 

 Tiueedy, 220; Great Falls, 1891, R. S. WiHiams, 248; 1886, F. JV. 

 Ande?'son, 241; Martindale, 1882, Canby ; Gallatin City, 1883, 

 Scribner, ma. 



* Hymenopappus luteus Nutt. Trans. Am. Phil. Soc. (H.) 7: 374. 



Like the last, but lower, subscabrous, and densely white-tomentose. 

 On very dry hillsides, at an altitude of 1500-2000 m. 



Montana: Melrose, 1895, Rydberg, 2gj8 ; Helena, 1892,^/^5. 

 3ftah. 



Eriophyllum integrifolium (Hook.) Greene, Fl. Fran. 444; Tricho- 

 ■phyUiiin integrifolium Hook. Fl. Bor. Am. i: 316; Eriofhylhun 

 caesfitositm intcgj'ifoliiun Gray, Proc. Am. Acad. 19 : 25 [Syn. 

 Fl. i': 331; Man. R. M. 192]. 



On hills and mountain-sides, at an altitude of 2000-2500 m. 

 Montana: Cliff Lake, July 27, 1897, Rydbcrg d- Besscy, 5182. 

 Yellowstone Park : 1885, Tweedy, 1^0. 

 Idaho: Mt. Chauvet, July 29, 1897, Rydberg & Bessey, §181. 



* Eriophyllum multiflorum (Nutt.); Trichojyhyllum miiltijlonim 



Nutt. Journ. Acad. Sci. Phila. 7: 35. 



Like the last, but the leaves more or less pinnately dissected, 

 loosely lanate, sparingly so on the upper and densely on the lower sur- 

 face ; heads and bracts larger, the latter acute and acuminate. Nut- 

 tall describes the involucre as consisting of 8 bracts. The specimens 

 in the Torrey Herbarium of the original collection have 10-14 bracts. 

 Except Wyeth's specimen, there is in the Columbia Herbarium only 

 one plant that can be referred here, this was collected by Miss 

 Isabel Mulford in 1892, near Corvallis, Oregon. 



Montana: Towards the sources of the Missouri, Wycth. 



* Eriophyllum leucophyllum (DC); Bahia leucopkyna T)C. Prod. 



5: 657 ; Et-iofhxUuui caespitostim leiicojbJixUnm Gray, Syn. Fl. i' : 



331- 



Like E. inteorifolimn, but the leaves are cleft or parted, and the 



achenes with unequal paleae. 



Yellowstone Park: Hot Sulphur Springs, 187 1, Haydcn 

 Survey. 



