34 MEMOIRS OF THE NEW YORK BOTANICAL GARDEN. 



* Calamagrostis Suksdorfii Scribn, Cont. U. S. Nat. Herb. 3: 82 



[Kearney, Bull. U. S. Dept. Agric. Div. Agrost. 11 : 24] : De- 



xcuxia Siiksdoj-fii Scrib. Bull. Torr. Bot. Club, 15 : 9. 



A grass growing in big bunches in the woods at an altitude 



of 1500-2000 m. It has a bent awn, a little longer than the empt}' 



glumes. The spikelets are not strongly compressed. 



Montana: Bozeman Canon, 1895, I^ydhcrg, 22J0; Little Belt 

 Mts., near Barker, 1896, Flodman, jj; Smith River, 1883, Scrib- 

 nei', 364 (t3'pe) ; 1894, 7?. S. Williams, lojo; Glendive, 1892, £. 

 A. Boss; Little Belt Mountains, 1896, Rydbcrg; JJ46, JJjp and 



JjS4- 



Yellowstone Park: Mammoth Hot Springs, 1892, Miss Altil- 



ford. 



"^Calamagrostis blanda Beal, Grasses N. Am. 2: 349; Calama- 

 g7-ostis pallida Vasey & Scribner, Cont. U. S. Nat. Herb. 3: 79. 

 Nearly related to C. Canadensis, but distinguished by its pale 

 whitish panicle, with usually flexuous branches, narrower and sharper 

 pointed empty glumes, and an awn attached near the apex and usu- 

 ally considerably longer than the flowering glumes. It grows among 

 bushes at an altitude of about 2000 m. 



Montana: Helena, 1895, Rydhcrg, 2/jp}^; Castle, 1896, ji-jc?. 



Calamagrostis Langsdorfii (Link) Trin. Unifl. 225 [111. Fl. i : 164; 



Bot. Cal. 2 : 279] ; Aritndo Langsdorjii Link, Enum. i : 74 ; 



DcvcHxia Langsdorjii [Man. R. M. 413]- 



Very rare within the region. The only specimen seen which may 

 be referred to it is the following : 



Yellowstone Park : 1884, Tzcccdy, 24S. 



Calamagrostis Canadensis (Michx.) Beauv. Agrost. 157 [111. Fl. i : 



163 : Bot. Cal. 2 : 279] ; AgTOsfis Canadensis Michx. Fl. Bor. 



Am. I : 73 ; Dexeiixia Canadensis Munro : Hook. f. Trans. 



Linn. Soc. 23: 345 [Man. R. M. 413]. 



Common in wet meadows, along streams, etc., to an altitude of 

 2000 m. 



Montana: Manhattan, Shear, 41 y; Logan, j/p." Rydberg, 22 jS: 

 Spanish Basin, 1896, Floduian, 4S : East Gallatin Swamps, ^g ; 

 1883, Scribner, j^g; Gallatin Co., 18S6, Tzvcedy, i02j; Columbia 

 Falls, 1894, R. S. Williains: East Gallatin Swamps, 1896, Ryd- 

 berg, J 202. 



Yellowstone Park : 1885, Ticeedx, 384. 



