MEMOIRS OF THE NEW YORK BOTANICAL GARDEN. 37 



* Calamagrostis hyperborea elongata Kearney, [Bull. U. S. Dept. 



Agric. Div. Agrost. ii : 40; Deyeiixia neglccta robusta Vasey ; 



Macoun, Cat. Can. PI. 4 : 206. 



Montana: Tenderfoot Creek, 1890, R. S. Williams^ 84.6; Box 

 Elder Creek, 1887, jgy; Manhattan, 1895, Shear, 4.21; Rydberg, 

 2igi ; Madison River, Shear, 522; Logan, joj; Castle, 1896, Ryd- 

 berg, 3254; East Gallatin Swamps, 3179, 31S1; Flo d man, 4.4; 

 Sheep Creek, Rydberg, 3309: Flodman, 43; Spanish Basin, 1896, 

 T. A. Williams, 2072. 



* Calamagrostis hyperborea Americana (Vasey) Kearney, Bull. 



U. S. Dept. Agric. Div. Agrost. 11 : 41 ; Deyeitxia neglect a 

 Americana Vasey ; Macoun, Cat. Can. PL 4 : 206. 

 Montana: Rock Creek, 1883, Scribner, 360; Belt Mts., 360; 

 Bozeman, 1886, Tzuecdy, 1020; Lima, 1895, Rydberg, 2jig. 



Calamovilfa longifolia (Hook.) Hack. True Grasses, 113 [111. Fl. i : 



167] ; Calamagrostis longifolia Hook. Fl. Bor. Am. 2 : 141 ; 



Ammophila longifolia Benth. [Man. R. M. 413]. 



In sandy places up to an altitude of 1500 m. This is a grass typ- 

 ical of the sandy portion of the Great Plains. 



Montana: Townsend, i8g$. Shear, jp4; Madison Count}', 1886, 

 Tweedy, 1004; Old Blackfoot Agency, 1883, Canby, 363; Banks 

 of Missouri, 1883, Scribner, 366 ; Bull Mountain, 1882, Canby. 



* Deschampsia brachyphylla Nash ; Deschamfsia brcvifolia R. Br. 



in App. Parry's Voy. 291, 1821 ; not Aira brcvifolia Bieb. Fl. 



Taur. Cauc. 3: 63. 1819. 



Aira brcvifolia Bieb. is also a Deschampsia and has been known 

 as Deschampsia caespitosa brcvifolia. It is however not the plant 

 known under that name in this country, which is the same as D, 

 brcvifolia R. Br. As there is an older Aira brcvifolia Pursh (18 14), 

 Bieberstein's plant is to be known as D. Biebersteiniana R. & S. 

 D. brach\phylla differs from D. caespitosa in being much smaller 

 and with a small dense panicle. It is an alpine plant, growing at an 

 altitude of 3000 m. 



Montana: Long Baldy, Litde Elk Mts., 1896, Rydberg, 3402; 

 West Gallatin, 1883, Scribner, 36ya. 



Yellowstone Park: Electric Peak, Aug. 18, 1897, Rydberg 

 d- Bessey, 3391 and jjp^ (the latter with almost white spikelets). 



