j. Flonil jrliMiies 'j- (riirely 3-) to iiiiiny- 



lu'rvt'il (p) 



p. lUudi'S broiitl. coiitiiiniiig tniii8vt'r.so 



veins 117 



J). IMiidcs narrow, tninaverso veins none. ((|) 

 ([. I'tinit'lo niconioso, si'cund, piiloa 



wingcd-ciliiito 118 



q. I'iinicU; viiriiil)lt'. Sjdkolt'ts Mat, 

 broud, lower empty <,duines 13-G, 



palea not \vin<;cd IIU 



q. Plimt ilid'cioiis. jianidc* narrow, 



enii)ty glunies ',', lirni I'iO 



q. Flowers perfect, panicle lax. 



floral ghinies cordate 121 



q. Floral fthiines not cordate. . . {r} 

 r. S[)ikelets closely imbricate in a 

 spikeliko i)anicle, floral fjlumes 

 7-nerved with jjflandnlar hairs 



at the base 122 



r. Spikelets in gloiiiei'ate clnsters 



of the seciind panicle. . . . 13J 

 r. Spikelets in panicles or racemes, 

 ueither imbricate Jior fascicu- 

 late, rays in half-whorls of 1-5 



or more (a) 



s. Sti<;mas 2, inserted at or near 

 theajjcx of the ovary; empty 



glumes awidess (t) 



t. Empty glumes longer 

 than the rest of the 



spikelet 128 



t. Floral glumes ]iroject 

 above at least some of 

 the emi>ty glumes . . . (u) 

 u. Lateral nervesof the floral 



