MANUAL OF THE GRASSES OF THE UNITED STATES 



247 



Figure 330.— Aegilops triuncialis, X 3^. (Cole, Calif.) 



46. ELYMUS L. Wild-rye 



Spikelets 2- to 6-flowered, in pairs (3 or more or solitary sometimes in a few 

 species) at each node of a usually continuous rachis, placed as in Agropyron 

 but the rachilla distorted at base, bringing the florets more or less dorsiventral 

 to the rachis; rachilla disarticulating above the glumes and between the 

 florets; glumes equal, somewhat asymmetric, usually rigid, sometimes indurate 

 below, narrow to subulate, 1- to several-nerved, acute to aristate; lemmas 

 rounded on the back or nearly terete, obscurely 5-nerved, acute or usually 



