MEMOIRS OF THE NEW YORK BOTANICAL GARDEN. 



49 



Montana: C:ist\e, i8g6, I^ydderg; j 2^0: Elk Mts., j^/j ; Sheep 

 Creek, jj/2,- Crown Creek, 1883, Scridncr, jpj. 



Yellowstone Park: East DeLac3''s Creek, Aug. 10, 1897, 

 Rydberg & Bessey, j6jj andj^d/; Yellowstone Lake, Aug. 12, 

 j6^j ; 1884, Tzi'CC(h\ 277 and joy; Mammoth Hot Springs, 1885, 

 646. 



Idaho: Henry's Lake, July 31, 1897, Rydberg iS: Bcsscy, j66o. 



Poa flava L. Sp. PI. 68 [111. Fl. i : 205] ; Poa serotina Ehrh. Beitr. 



6: 83 [Man. R. M. 422; Bot. Cal. 2:313]. 



In meadows and wet woodlands to an altitude of 1500 m. 



Montana : Helena, near Broadwater Hot Springs, 1895, Rydberg^ 

 2144 and 214J ; Townsend, July 15, 2162 ; Manhattan, 2igo; Shear, 

 4-2yy2 ; Bozeman Canon, ^gg ; Logan, j/j ,• Rydberg, 226-/ ; Galla- 

 tin, July 29, 228(); S/iear, jj2 ; Helena, 1883, Canby, jyo. 



Poa nemoralis L. Sp. PI. 69 [111. Fl. i : 205] ; Poa caesia strictior 



A. Gray, Man. Ed. 5, 629 [Man. R. M. 421]. 



Common in wet places, especially along the borders of woods, up 

 to an altitude of 2000 m. 



Montana: Melrose, 1895, Rydberg, 2100; Manhattan, 2iyj a.nd 

 2ip2; Baldy, Bridger Mts., 222^; Shear, 46 j, -J-6g; Lima, Ryd- 

 berg, 2Joq; Shear, jdy and jj6; Spanish Basin, 1896, Flodnian, 

 ijj ; Spanish Peaks, ij6; Elk Mts., near Black Hawk, 1J4: Little 

 Belt Mts., near the pass, 141 ; near Barker, i^j ; Helena, 1889 and 

 1892, AVAn-; Yogo, 1888, R. S. Williains, j6j ; 1883, Seribner ; 

 Bozeman, 1887, Tzveedy ; Jack Creek, July 14, 1897, Rydberg & 

 Bessey, 3640; Spanish Basin, 1896, Rydberg, joyS, joSy, jogj, 

 jogS, jioi ; Bridger Canon, ji'/o; Elk Mts., 3248,3263, 32^0; 

 Sheep Creek, jjo/, 3317: Litde Belt M\s., 33igy2, 3330, 3367, 

 337-1 337^ ^"d 3380; Sixteen Mile Creek, 1883, Seribner, 3g4a; 

 Belt Mts., 3g4'. Flathead River, 1883, Canby, 36g; Nevada Creek, 

 1883, Canby, 371 (tall specimens with unusually large spikelets). 



Yellowstone Park: 1884, Tzveedy, 273 : Lone Creek, 1885, 

 640 and 647; Upper Falls, Aug. 14, 1897, Rydberg & Bessey, 

 3634a. 



*Poa rupicola Nash; Poa rupestn's Vasey, Bull. Torr. Bot. Club, 



14: 94 ; not Bieb. nor Roth. 



A small alpine species resembling somewhat P, nemoralis , but 

 with a low strict stem and a narrow panicle. It grows at an altitude 

 of about 3000 m. 



