64 MEMOIRS OF THE NEW YORK BOTANICAL GARDEN. 



* Agropyron Gmelini (Griseb.) Scribn. & Smith, Bull. U. S. Dept. 



Agric. Div. Agrost. 4:30. 1897 [111. Fl. 3: 508]; Trisctum 



canimim Gmelini Gr'iseh. ; Ledeb. 111. Fl. Ross. 3: 248. 



This differs from A. violacciim and its allies in that the basal 

 culm leaves are shorter than the upper ones. Dry ground at an alti- 

 tude of about 2000 m. 



Montana: Deer Lodge, 1895, Shea7', jyg; Baldy, Bridger 

 Mountains, I^vdbcrg, 22jj;. 



* Agropyron Gmelini Pringlei Scribn. & Smith, Bull. U. S. Dept. 



Agric. Div. Agrost. 4: 31. 1897. 



Low, tufted, geniculate, leaves 5-10 cm. long. An alpine plant 

 growing at an altitude of 3000 m. 



Yellowstone Park : 1893, ,/. Af. Rose, 3j^ and 6gj. 



Idaho: Mt. Chauvet, July 29, 1897, Rvdherg iS: Bessev, j/iya. 



Agropyron Scribneri Vasey, Bull. Torr. Bot. Club. 10: 128 [Man. 



R. M. 426]. 



An alpine species growing at an altitude of about 3000 m. 



Montana: Little Belt Mts., 1883, So-ibner, 42J : Cedar Moun- 

 tain, July 16, 1897, Rydberg <£- Bessey, 37^ i - 



Yellowstone Park : Mt. Holmes, 1884, Tu'ecdv, 2jo. 



Idaho: Mt. Chauvet, Jul}- 29, 1897, Rydberg <£- Bcssey^ jyi2 

 and J7/J. 



* Agropyron albicans Scribn. & Smith, Bull. U. S. Dept. Agric. Div. 



Agrost. 4: 32. 



Related to A. dasystac/imii, but distinguished by divergent bent 

 awn. 



Montana: Yogo Gulch, 1896, Rrdberg, J^oj ; Flodnian, ^35^ 

 Elk Mountain, near Black Hawk, Aug. 5, Flodman, 20 j ; Rydberg, 

 3256- 



Agropyron Smithii ; Agropyron spicatiun Scribn. & Smith, Bull. U. 



S. Dept. Agric. Div. Agrost. 4 : '}^'^ [111. Fl. 3 : 507] ; Agropyrum 



repens Coulter, Man. 425, in part. 



Differing from A. repens in the acute, compressed, diverging spike- 

 lets and striate, bluish-green, glaucous leaves : common in meadows 

 of the prairie regions, reaching in the valleys an altitude of 2000 m. 



See under A. spicatiini above. I name this species in honor of 

 my friend J. G. Smith, of the U. S. Department of Agriculture who 

 has contributed more than any one else to the knowledge of our 

 Agropyrons. 



