WOOTON AND STANDLEY—FLORA OF NEW MEXICO, 109 
Lemmas long-awned. 
Spikes narrow; spikelets erect. 
Leaves 7 to 15 mm. wide, spreading; glumes lanceolate, 
acuminate to short-awned.. veeeeeee ....-. 3. FE. glaucus. 
Leaves less than 5 mm. wide, mostly erect; "glumes 
narrowly linear-lanceolate, long-awned.......... 4. E. macounit. 
Spikes broad; spikelets spreading. 
Lemmas glabrous.......--.---------eee cece eee eee eee 7. E. brachystachys. 
Lemmas pubescent. 
Lemmas hirsute or villous................---------- 5. E. canadensis. 
Lemmas strigose-hispidulous or scabrous wee e eee eee 6. E. robustus. 
1. Elymus triticoides Buckl. Proc. Acad. Phila. 1862: 99. 1863. 
Type LocaLity: ‘‘ Rocky Mountains.”’ 
RaNnGE: Washington and California to Arizona and New Mexico. 
New Mexico: White Mountain Peak; Mesilla Valley. Lower Sonoran to the Tran- 
sition Zone. 
Y 2. Elymus simplex Scribn. & Williams, U. 8. Dept. Agr. Div. Agrost. Bull. 11: 57. 
1898. 
Type Locatiry: On banks of Green River, Wyoming. 
RanGeE: Oregon and Wyoming to northern Arizona and New Mexico. 
New Mexico: Carrizo Mountains (Standley 7466). Dry plains and hills, in the 
Upper Sonoran Zone, 
8. Elymus glaucus Buckl. Proc. Acad. Phila. 1862: 99. 1863. 
Elymus americanus Vasey & Scribn.; Macoun, Cat. Can. Pl, 2: 245, 1888. 
Elymus sibiricus americanus Wats. & Coult. in A. Gray, Man. ed. 6. 673. 1890. 
TyprE Locauity: ‘Columbia River.” 
RaNnGE: Alaska and California to Texas and the Great Lakes. 
New Mexico: Chama; Tunitcha Mountains; Winsors Ranch; Johnsons Mesa. 
Mountains, in the Transition Zone. 
Y 4. Elymus macounii Vasey, Bull. Torrey Club 18: 119. 1886. 
Type LocaAuity: ‘‘Great Plains of British America.”’ 
Rance: Manitoba and Saskatchewan to Nebraska and New Mexico. 
New Mexico: Albuquerque (Tracy). Upper Sonoran Zone. 
5. Elymus canadensis L. Sp. Pl. 83. 1753. 
Type Loca.ity: ‘‘Habitat in Canada.”’ 
Rance: British America to New Mexico and Texas. 
New Mexico: Farmington; Raton Mountains; Pecos; Santa F'e; Las Vegas; Pescado 
Spring; Kingston; Sabinal; Mesilla Valley; White Mountains. Damp ground, Lower 
Sonoran to Transition Zone. 
6. Elymus robustus Scribn. & Smith, U. 8. Dept. Agr. Div. Agrost. Bull. 4: 37, 
1897. 
Tyre Loca.ity: Illinois. 
RanGeE: Montana and Illinois to New Mexico. 
New Mexico: Mangas Springs. 
Y 7. Elymus brachystachys Scribn. & Ball, U. S. Dept. Agr. Div. Agrost. Bull. 24: 
47. f. 21. 1901. , 
Type Locauiry: Oklahoma. 
RanGeE: South Dakota and Michigan to Mexico. 
New Mexico: Black Range. Moist ground. 
