MANUAL OF THE GRASSES OF THE UNITED STATES 



251 



Elymus innovatus Beal. (Fig. 485.) 

 ipike rather dense, 5 



Figure 483.— Distribution of 

 Elymus flavescens. 



Figure 482.— Elymus flares- times Sparingly SO, 



uandwii- wkn an awn 5 to 



cox 160, Idaho.) 



Resembling E. flavescens; 

 to 12 cm long, the axis 

 villous; spikelets 1 to 1.5 cm long, the narrow 

 glumes and the lemmas densely purplish or gray- 

 ish-villous, the lemmas with an awn mostly 1 to 

 4 mm long. % — Open woods and gravelly 

 flats, Alaska to British Columbia; Montana, 

 Wyoming, and South Dakota (Black Hills). 



7. Elvmus hirtiflorus 

 Hitchc. (Fig. 486.) 

 Culms erect, tufted, 40 to 

 90 cm tall, with slender 

 creeping rhizomes; blades 

 firm, flat or usually invo- 

 lute, glabrous beneath, 5 

 to 20 cm long, 1 to 4 mm 

 wide when flat; spike 



erect, 5 to 15 cm long; spikelets 4- to 6- 



flowered; glumes firm, hirsute, narrow, tapering 



into an awn about as long as the body, the 



entire length 1 to 1.5 cm; lemmas hirsute, some- 



the lower 8 to 9 mm long, 



an awn o to 10 mm long. % — River 



banks, Wyoming. 



8. Elymus triticoides Buckl. Beardless wild-rye. (Fig. 487.) 



Culms usually glaucous, rarely pubescent 



below spike, 60 to 120 cm tall, commonly 



in large colonies from extensively creeping 



scaly rhizomes; ligule a truncate rim about 



1 mm long; blades mostly 2 to 6 mm wide, 



flat or soon involute; spike erect, slender to 



rather dense, rarely 



compound; spikelets 



mostly 12 to 20 mm 



long ; glumes very 



narrow to subulate, 



firm, nerveless or 1- to 



3-nerved, awn-tipped, 



5 to 15 mm long, those 



of the upper spikelets 



usually reduced or 



obsolete; lemmas 6 



to 10 mm long, gla- 

 brous, firm, brownish, 



purplish or tawny, 



awn-tipped. % — 



Moist or alkaline soil, 



at low and medium 



elevations, Montana 



to Washington, south 



to western Texas and Baja California (fig. 



488). Elymus triticoides var. pubescexs 

 and involute blades pubescent. % —Oregon, 



Figure 485.— Elymus innoratus. X 

 1. (Hayward 2719, S. Dak.) 



Figure 484.— Elymus are- 

 nicola, X 1. (Palmer 356, 

 Idaho.) 



Hitchc. Sheath; 



