514 MISC. PUBLICATION 200, U. S. DEFT. OF AGRICULTURE 



1 to 1.5 mm wide; axis slender, flexuous, 6 to 8 cm long; spikes 10 to 

 20, triangular, spreading, about 1 cm long including the awns ; spikelets 



FIGURE 1083. Bouteloua curtipendula. Plant, X Vi', spikelet and florets, X 5. (Chase 5408, Colo.) 



about 5; rachis and glumes densely pubescent; fertile lemma pubes- 

 cent toward the summit, the apex 3-cleft, the divisions awn- tipped; 



