MEMOIRS OF THE NEW YORK BOTANICAL GARDEN. 313 



7^. D. Kchey ; Beaver Head Co., 1888, Tzueedy, 26; Melrose, 

 1895, Rydha-g, 2y6o iind 2/61 ; Butte, 1896, y. F. Kemp; Deer 

 Lodge, 1892, W. T. Shaw; Bozeman, 1892, Shazv. 



Phlox canescens Torr. «& Gray, Pac. R. R. Rep. 2 : 8 [Syn. Fl. 2^ 



132; Man. R. M. 248; Bot. Cal. i: 487; E. Nelson, Rev. 10]. 



Dry hills, up to an altitude of 2800 m. 



Montana : Big Blackfoot River, John Pcarsall (Mullan Expedi- 

 tion) ; Beaver Head Co., 1888, F. Tzvcedy, 2j. 



Yellowstone Park: Swan Lake, 1885, F. Tzvcedy, 826. 



Phlox Hoodii Richards. ; Frankl. Journ. App. 733 [Syn. Fl. 2' : 132 ; 



111. Fl. 3: 37; Man. R. M. 247; E. Nelson, Rev. 10]. 



Dry hills and plains, up to an altitude of 2000 m. 



Montana : Bridger Mts., June 11, 1897, Rydbcrg & Bessey^ ^8ioa 

 and 4817; Missoula Co., Mrs. Kennedy; Bozeman Pass, 1883, 

 Scribne?', ij6d/s; Great Falls, 1892, K. S. Williams, 8ji. 



Phlox caespitosa Nutt. Journ. Acad. Phil. 7: 41 [Syn. Fl. 2' : 132 ; 



Man. R. M. 248; Bot. Cal. i : 487 ; E. Nelson, Rev. 14]. 



Dry hills, up to an altitude of 3000 m. 



Montana: Flathead River, Wycth; Hell Gate, John Pcarsall, 

 {Mullan Expedition) ; Spanish Peaks, \%c)6, Flodman, yji; Old Hol- 

 lowtop, Pony Mts., July 7, 1897, Rydbcrg & Bcssey, 4813 and 4815; 

 Spanish Basin, June 26, 4.814; Indian Creek, July 22, 4812; Mis- 

 soula, 1883, Tzvecdy ; Wisconsin Creek, 1892, /. B. Allebaugh ; 

 Lewis and Clarke Co., Mrs. F. Harzvood. 



Yellowstone Park : 1884, F. Tzvecdy, 284, in part. 



* Phlox scleranthifolia. 



Cespitose, with comparatively long depressed branches, perfectly 

 glabrous or finely puberulent, except a few villous hairs at the base 

 of the leaves and on the calyx ; leaves with a clasping somewhat 

 scarious base, very narrow, about i cm. long, and less than 0.5 mni. 

 wide, spinose-tipped, somewhat diverging, with |prominent midvein 

 and recurved margin ; flowers sessile or nearly so ; calyx about 5 

 mm. long, its teeth lanceolate, bristle-tipped ; corolla white, its tube 

 slightly exceeding the calyx ; lobes of the limb narrow, 6-8 mm. long. 



In habit it most resembles P. diffusa, but the leaves are much 

 finer, scarcely more than one-fourth as wide, and the corolla-tube is 

 much shorter. On wooded hillsides, at an altitude of 1000-2000 m. 



South Dakota: Hot Springs, Black Hills, 1892, Rydbcrg, 880 



(type). 



