446 POACE^. 



glumes nearly parallel, 

 not converging. . . , (v) 

 V. Empty glumes not 

 shorter or very little 

 shorter than the near- 

 est floral glumes. . . (w) 

 "w. Floral glumeswith 

 two very short 

 obscure lateral 

 nerves on each side. 127 

 w. Floral glumes 

 with 3-4 lateral 

 nerves on each 



side 129 



V. Empty glumes much 

 shorter than the near- 

 est floral glumes. . . (x) 

 X. Styles distinct, 



lodicules united. . 131 

 X. Styles none, lodi- 

 cules distinct. . 132 

 n. Lateral nerves of the 

 floral glumes arched, con- 

 verging above. . . . (y) 

 y. Rachilla with a fringe 



of stiff hairs. . . .130 

 y. Rachilla naked, 



downy or with 

 crinkled hairs. . . (z) 

 z. Floral glumes 



strongly keeled on 

 the back, hilum 

 punctiform. . . (aa) 

 aa. Floral glumes 

 cartilaginous 

 at the base. . 129 



