WOOTON AND STANDLEY— FLORA OF NEW MEXICO. 109 



Lemmas long-awued . 



Spikes narrow; spikelets erect. 



Leaves 7 to 15 mm. wide, spreading; glumes lanceolate, 



acuminate to short-awned 3. E. glaucus. 



Leaves less than 5 mm. wide, mostly erect; glumes 



narrowly linear-lanceolate, long-awned 4. E. macounii. 



Spikes broad; spikelets spreading. 



Lemmas glabrous 7. E. hrachystachys. 



Lemmas pubescent. 



Lemmas hirsute or villous 5. E. canadensis. 



Lemmas strigose-hispidulous or scabrous 6. E. rohustus. 



1. Elymus triticoides Buckl. Proc. Acad. Phila. 1862: 99. 1863. 

 Type locality: "Rocky Mountains." 



Range: Washington and California to Arizona and New Mexico. 

 New Mexico: White Mountain Peak; Mesilla Valley. Lower Sonoran to the Tran- 

 sition Zone. 



2. Elymus simplex Scribn. & Williams, U. S. Dept. Agr. Div. Agrost. Bull. 11: 57. 



1898. 

 Type locality: On banks of Green River, Wyoming. 

 Range: Oregon and Wyoming to northern Arizona and New Mexico. 

 New Mexico: Carrizo M.ovia.iaias'{Standley 7466). Dry plains and hills, in the 

 Upper Sonoran Zone. 



3. Elymus glaucus Buckl. Proc. Acad. Phila. 1862: 99. 1863. 

 Elymus americanus Vasey & Scribn.; Macoun, Cat. Can. PI. 2: 245. 1888. 

 Elymus sibiricus americanus Wats. & Coult. in A. Gray, Man. ed. 6. 673. 1890. 

 Type locality: "Columbia River." 



Range: Alaska and California to Texas and the Great Lakes. 



New Mexico: Chama; Tunitcha Mountains; Winsors Ranch; Johnsons Mesa. 

 Mountains, in the Transition Zone. 



4. Elymus macounii Vasey, Bull. Torrey Club 13: 119. 1886. 

 Type locality: "Great Plains of British America." 



Range: Manitoba and Saskatchewan to Nebraska and New Mexico. 

 New Mexico: Albuquerque {Tracy). Upper Sonoran Zone. 



6. Elymus canadensis L. Sp. PI. 83. 1753. 



Type locality: "Habitat in Canada." 



Range: British America to New Mexico and Texas. 



New Mexico: Farmington; Raton Mountains; Pecos; Santa Fe; Las Vegas; Pescado 

 Spring; Kingston; Sabinal; Mesilla Valley; White Mountains. Damp ground. Lower 

 Sonoran to Transition Zone. 



6. Elymus robustus Scribn. & Smith, LT. S. Dept. Agr. Div. Agrost. Bull. 4: 37. 



1897. 

 Type locality: Illinois. 



Range: Montana and Illinois to New Mexico. 

 New Mexico: Mangas Springs. 



7. Elymus hrachystachys Scribn. & Ball, U. S. Dept. Agr. Div. Agrost. Bull. 24: 



47./. 21. 1901. 

 Type locality: Oklahoma. 

 Range: South Dakota and Michigan to Mexico. 

 New Mexico: Black Range. Moist groimd. 



