380 MISC. PUBLICATION 200, U. S. DEPT. OF AGRICULTURE 



40. Muhlenbergia pauciflora Buckl. New Mexican muhly. 



(Fig. 790.) Perennial; culms loosely tufted, wiry, erect, branch- 

 ing at the lower nodes, 30 to 50 cm tall; 

 blades 1 mm wide or less; panicle narrow, 

 contracted, interrupted, 5 to 10 cm long, the 

 branches erect or ascending; spikelets, 

 excluding awn, about 4 nun long, the glumes 

 about half as long, acuminate to awn- 

 tipped; lemma scaberulous only, tapering 



figure 784.-Distribution of m t a slender flexuous awn, 5 to 12 mm 



Muhlenbergia montane -. -r, , -, .,-, -. ' , 



long. % — Rocky lulls and canyons, western 

 Texas to Colorado and Arizona, south to northern Mexico (fig. 791). 



Figure 785.— Muhlenbergia virescens. Plant, X 1; glumes and floret, X 10. ( Palmer 565, Ariz.) 



41. Muhlenbergia porteri Scribn. Bush muhly. (Fig. 792.) 

 Perennial; culms woody or persistent at base, numerous, wiry, 

 widely spreading or ascending through bushes, scaberulous, mostly 

 branching from all the nodes, 30 to' 100 cm tall or more; sheaths 



