C — Spikelets pedicellate 



^piJcelets awned. 



Leaves broad : — 



Spikelets cil'ate ... (82) Axonopus' 



Spikelets with long hairs. (iSfi) Arundo. 

 Spikelets not ciliate — 



Stamens 3 



Stamens 6 



(84-85) Oplismenus; 

 (94) Hygrorhiza. 



Leaves narrow : — 

 Awn branched 

 Awn not branched. 

 Spikelets silky 



Spikelets noi awned. 



Spikelets i -flowered. 



Innoresc'ence spike-like 

 with silky hairs 



Inflorescence panicled. 

 Spikelets large. Sta- 

 mens 6 



Inflorescence panicled. 

 Spikelets small. Sta- 

 mens 3 



(139—142) Aristidac 

 (83) Tricholaena. 



(99) Imperata. 



(93) Leersia. 



(143 — 145) Sporobolus. 



Spikelets 1-2 flowered. 



Spikelets without an involucel of bristles : — 

 Spikelets globose. Glumes 



I and II equal ... ( 63, 64 ) Isachne. 



Spikelets not globose. 

 Glume I small, sheathing ( 74 — 81 ) Panicum. 

 Spikelets with an invol- 

 ucel of bristles ... ( 90, 91 ) Pennisetum-, 



Spikelets 00 flowered. 



Spikelets with long hairs.. ( 156 ) Phragmatis. 



Spikelets with short hairs.. (158 — 167) EragroitiS" 

 or none. 



