GRAMINEAE 



13 



B. 



Tall reeds with rachis and flowers long-vil- 



lous. 

 Not tall reeds and rachis and flowers not 

 long-villous. 

 Flowering glume awned from the middle. 

 Spikelets less than 6" long. 

 Spikelets more than &" long. 

 Flowering glume awuless or awned from 

 the apex. 

 Flowering glume toothed or lobed at 

 apex. 

 Spikelets sessile. 

 Spikelets pedicelled. 

 Flowering glume not toothed or lobed 

 at apex. 

 Flowering glumes 3-nerved. 



Glumes thick and coriaceous ; pan- 

 icle few-flowered. 

 Glumes not thick and coriaceous ; 

 panicles many-flowered. 



36. Pheagmites. 



28. Teisetum. 



29. Avena. 



38. Diplachne. 

 37. Sieglingia. 



43. KOEYCARPUS. 



