MANUAL OF THE GRASSES OF THE UNITED STATES 



251 



FIGURE 483. Distribution of 

 Elymus flavescens. 



6. Elymus innovatus Beal. (Fig. 485.) Resembling E. flavescens; 

 spike rather dense, 5 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. 91 Open woods and gravelly 

 flats, Alaska to British Columbia; Montana, 

 Wyoming, and South Dakota (Black Hills). 



7. Elymus 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- 

 FIGURE 482. Elymus flaves- times sparingly so, the lower 8 to 9 mm long, 

 co^ieo, Idaho 1 ) 6 "" 111 "^ Wfl ~ with an awn 5 to 10 mm long. 91 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. 91 



Moist or alkaline soil, 



at low and medium 



elevations, Montana 



to Washington, south 



to western Texas and Baja California (fig. 



488). ELYMUS TRITICOIDES var. PUBESCENS 

 Hitchc. Sheaths and involute blades pubescent. 91 Oregon, 



FIGURE 485. Elymus innovatus, X 

 1. (Hayward 2719, S. Dak.) 



FIGURE 484,-Elymus are- 



id C h a '-X i. (Palmer 356, 



