MEMOIRS OF THE NEW YORK BOTANICAL GARDEN. 3 1 



Manhattan, Shear, 7?j,- Logan, J04; Rydberg; 226g and ^J7p; 

 Melrose, Shear, j^j ; Rydberg; 22Q4.; Madison River, 2281 and 

 2282: Little Belt Mts., near Barker, 1896, Flodinaii, jj; Great 

 Falls, 1890, R. S. Willianis, 84^: Helena, 1892, Kchey : Spanish 

 Basin, 1896, Rydbcrg; Jijg, J180 and jiSyy^; Castle, 3242; Little 

 Belt Mountain, Jj^g: Missoula Co., Mrs. Kennedy ; Spanish Basin, 

 1896, Flodman, 34 (?) : Fort Shaw, 1883, Scr/bner, jj6. 



*Agrostis humilis Vasey, Bull. Torr. Bot. Club, 10: 21 ; Cont. U. 



S. Nat. Herb. 3: 77. 



It is related to A. alba, but is much smaller, only 1-2 dm. high, 

 and with a narrow panicle. River banks at an altitude of 1500- 

 2000 m. 



Montana: Park Co., 1887, Tzueedy. 



Yellowstone Park: 1884, Tzueedy, 2jg and 6oj. 



*Agrostis aequivalvis Trin. Mem. Acad. St. Petersb. (VL) 6": 362 



[Vasey, Cont. U. S. Nat. Herb. 3: 77; Bot. Cal. 2: 271]; 



Deyeiixia aequivalvis Benth. Journ, Linn. Soc. 19: 91. 



A species with a narrow panicle belonging to the alba group, /. e., 

 with the palet present, and this almost as long as its glume. The 

 flowers have a small hairy rudiment at the base, the plant therefore 

 approaching Calaniag-rostis. It is a very rare grass in Montana. 



Montana: East Fork of Gallatin, 1886, Tzveedy, loig. 



Agrostis asperifolia Trin. Mem. Acad. St. Petersb. (VI.) 6-: 317; 



Agrostis exarata Thurber, Bot. Cal. 2 : 273, in part [Man. R. M. 



412, in part]. 



Like A, exarata, but with smaller spikelets, denser panicle and ver}^ 

 scabrous leaves. River banks at an altitude of 1000-2500 m. 



Montana: Elk Mts., near Black Hawk, 1896, Floduian, 32; 

 Spanish Basin, 1896, ?/; 1883, Scribner, jjj ; Spanish Basin, 1896, 

 Rydberg; jug; Elk Mountains, 323^,3260 and j^/j; Judith River, 

 3432; Cedar Mountains, July 16, 1897, Rydberg d' Bessey, 3380; 

 Tobacco Plains, 1883, //. B. Ayres, CCCVI; Horned Creek, 

 1883, Scribner, 334. 



Yellowstone Park: Pelican Creek, 1885, Tzceedy, 604: Lone 

 Star, Aug. 7, 1897, Rydberg d' Bessey, 3381. 



Idaho: Henry's Lake, July 31, 1897, Rydberg d- Bessey, 337^ 

 and 3382. 

 Agrostis grandis Trin. Mem. Acad. St. Petersb. (VI.) 6'-: 316. 



