22 .MEMOIRS OF THE NEW YORK BOTANICAL GARDEN. 



Williams, jjj ; Missoula, 1880, Watson; Hell Gate, 1880, Watson; 

 Spanish Basin, 1896, Bydbcrg, jijS : 1883, Scribncr, jj2 ; Swim- 

 ming Women Creek, 1882, Tzuccdy. 



Yellowstone Park : Lake, 1885, Tzvccdy, jyg. 



Savastana odorata (L.) Scribner, Mem. Torr. Bot. Club, 5: 34 

 [111. Fl. I : 132] ; HolcHS odoratiis L. Sp. PI. 1048 ; Hicrochloa 

 borealis R. «& S. Syst. 2: 513 [Man. R. M. 406]. 

 In wet places among bushes, on wooded river banks and in open 

 woods, up to an altitude of 2000 m. 



Montana: jNIanhattan, July 17, 1895, Shear, ^jj, and Bydhcrg, 

 218^: Logan, July 27, Rydberg, 2jii : Great Falls, 1886, 7?. S. 

 Williams, j6j : Madison River, 1883, Scribnc)-, jjj. 



Yellowstone Park: East Fork, 1885, Tzvccdy, 64S ; Yellow- 

 stone Lake, 187 1, Hay den. 



Aristida longiseta Steud. Syn. PI. Gram. 420. 



On dry hills, especially in sandy soil. It is rare in ]Montana, 

 ascending to an altitude of 1500 m. 



Montana: Madison Co., 1886, Tzi'eedy, 1006; Hilgers, 1892, 

 Kelsey ; Belt Creek, 1883, Scribner, jj6 : Billings, 1898, Williams 

 d- Griffith. 



Stipa Richardsoni Link, Hort. Berol. 2: 245 [Man. R. M. 408]. 



Common on hill sides and dry plains, at an altitude of 1000- 

 2500 m. 



Montana: Silver Bow, July 8, 1895, Shear, 337: Rydberg, 

 2iog; Garrison, July 8, Shear, jyi : Rvdberg, 2123: Bridger 

 Mountains, July 28, 1896, Flodman, 72: Elk Mts., near Castle, 

 Aug. I, 7j; Jack Creek, Juh' 14, 1897, Rydbcrg & Besscy, jj^g; 

 Bird Tail Divide, 1887, R.S. Williams, 601 : Philipsburg, 1892, 

 Kelsey; Gallatin River, 1886, Tzceedx, 1014: Castle, 1896, Ryd- 

 berg^ 3233; Flathead, 1883, H. B. Ay res, CXXXVI; Liule 

 Blackfoot, Canby,336: 1^\\x\q ]iQ\t, Scribner, 3^1 . 



Yellowstone Park: Soda Butte, 1885, Tzveedy, 611. 



Stipa viridula Trin. Mem. Acad. St. Petersb. (VI.) 2 : 39 [Man. 



R. M. 408; 111. Fl. i: 138; Bot. Cal. 2: 288]. 



Common in meadowland throughout the region to an altitude of 

 2500 m. If cut early it makes a fair hay. 



Montana: Dillon, July 3, 1895, Rydberg, 20S/; Gallatin, July 

 16-29, Rydberg, 21S0 and 22S3 ; Shear, 32S ; Manhattan, July 17, 



