38 MEMOIRS OF THE NEW YORK BOTANICAL GARDEN. 



Deschampsiacaespitosa (L.) Beauv. Agrost. 160 [Man. R. M. 414; 



111. Fl. I : 169] ; Aira caesfitosa L. Sp. PI. 64 [Bot. Cal. 2 : 



297]. 



Along streams and in wet meadows up to an altitude of 3000 m. 



Montana :■ Sheep Creek, Aug. 8, iS()6, J^lodiiian, 81; Spanish 

 Basin, 1896, Flodman^ 82; Rydberg, jojg; Neihart, 1888, R. S. 

 Williams, 612; Bozeman, 1886, Tweedy, 1018; 1883, Scribner, 

 36"/; Spanish Basin, 1896, Rydberg, jo6j; Castle, J2^y; Sheep 

 Creek, Jjio: Forks of the Madison, July 26, iSgj, Rydberg & 

 Bessey, 3j88. 



Yellowstone Park: East Fork, 1885, Tzaeedy, 616; Lower 

 Geyser Basin, Aug. 4, 1897, Rydbo-g & Bessey, JjQo; East De 

 Lacy's Creek, Aug. 10, JjSg; Little Belt Mts., 1883, Scribner, j6j. 



* Deschampsia elongata (Hook.) Munro ; Benth. PI. Hartvv. 342; 



Aira elongata Hook. Fl. Bor. Am. 2: 243 [Bot. Cal. 2: 297]. 



It is characterized by its elongated narrow panicle and small 

 spikelets. In open moist woods at an altitude of 1800-2500 m. 



Montana: Below Bald}', near Bozeman, 1895, Shear, ^jj and 

 482; Rydberg, 2246; Belt River Park, 1889: R. S. Williams, 836; 

 Helena, 1892, Kelsey ; Belt Creek, i^Si,, Seribner, 368. 



* Deschampsia atropurpurea (Wahl.) Scheele, Flora, 27:56 [111. 



Fl. I : 170] ; Aira atropurpurea Wahl. Fl. Lapp. 37. 



It is characterized by its short broad leaves, small panicle, large 

 dark spikelets and empty glumes, which are much longer than the 

 flowering glume. It is a rare plant in Montana. 



Montana: Columbia Falls, 1892, R. S. Williams, 957," Park 

 Co., 1887, Tzveedy ; Mt. Blackmore, i885, loij. 



Graphephorum Wolfii Vasey, Descr. Cat. Grasses U. S. 55 [Man. 



R. M. 423] ; Trisetnm Wolfii Vasey, Bot. Wheeler Exp. 6 : 294. 



In wet meadows at an altitude of 1000-2500 m. 



Montana: Mystic Lake, 1895, SJicar, 4^3; Rydbcrg, 2233; 

 Lima, Shear, 360; Little Belt Mis., near the pass, 1896, Flodman^ 

 i6j ; Yogo Baldy, 166; Gallatin Co., 1886, Tzveedy, 1008. Belt 

 Range, 1883, Scribner, 3^0 ; Sun River, 1887, R. S. Williams, 

 373; Spanish Basin, 1896, Rydberg, 3080, 3128; Castle, 3244; 

 Little Belt Mts.,jj^c?,- Yogo, 3428; Forks of the Madison, 1897, 

 Rydberg & Bessey, 3671 . 



