MANUAL OP THE GRASSES OP THE UNITED STATES 



121 



91 Rocky slopes, Alaska to Washington (alpine slopes, Mount 

 Rainier, Mount Baker) ; Glacier National Park, Mont. More leafy 

 than P. leptocoma, more tufted, the panicle 

 branches not so long; spikelets broader. 



33. Poa leptocoma Trin. BOG BLUEGRASS. 

 (Fig. 209.) Culms slender, solitary, or few in 

 a tuft, 20 to 50 cm tall, often decumbent at 

 base; sheaths usually slightly scabrous; ligule 

 acute, the uppermost 3 to 4 mm long; blades 

 short, lax, mostly 2 to 4 mm wide; panicle 

 nodding, delicate, few-flowered, the branches 

 capillary, ascending or spreading, subflexuous, the lower mostly in 



FlGUBE 



FIGURE 206. Poa wolfil. Panicle, X 1; floret, X 10. (Deam 33821, Ind.) 



pairs; spikelets narrow, 2- to 4-flpwered; glumes narrow, acuminate; 

 lemmas 3.5 to 4.5 mm long, acuminate, webbed at base, pubescent on 



