ZOYSIE.E. 71 



spike, racliilla not continued above the j^erfeet flower. Glumes 3 

 eacli, more or less 3-tootlied at the apex, the lateral teeth sliort, the 

 middle one extended into a bristle or awn; the 2 outer glumes 

 empty, a little shorter, or the empty ones vary, either 1 only, entire. 



Fig. n.—^gopogon cenchroides. A, spike; a, b, spikelets. (After Doell.) 



acute, or all broadly emarginate and awnless at the apex; floral 

 glume often larger than tlie empty glumes and prominently 3- 

 toothed; palea a little shorter than the glume, narrower, 2-nerved, 



