Materials for a Flora of the Malayan Peninsula. 



121 



and II awned or not, IV the smallest, awncd 

 only. Awn twisted at base. 

 Spikelets similar unilateral on slender spikes 

 Spikelets solitary or in pairs one-flowered 

 awnless. 

 Eachis inarticulate 

 Rachis articulate panicled large . . 

 Spikelets awned in pairs 2 flowered. Eachis 



fragile. 

 Sipkes solitary. Glumes not pectinate 

 Spikes solitary. Glumes pectinate . . 

 Spikes digitate or fascicled. 



Glume IV very small 

 Spikes solitary, binate or digitate. 



Glume IV larger . . 

 Spikelets sunk in pits in an articulate rachis. 

 Sessile spikelets solitary. 



Glume I ovate or oblong 

 Glume I globose pitted . . 

 Sessile spikelets 2 

 Spikelets ternate in a simple spikes rachis 



fragile . . 

 Spikelets ternate in short spikes one jointed 



enclosed in a peduncled spathe 

 Spikelets in pairs in solitary fascicled or 

 panicled spikes. 

 Glume III barren or absent 

 Spikelets in clusters of 5 or more the four 

 lowest sessile surrounding the upper 

 bisexual ones 



or reduced to an awn 

 10. Dimeria. 



20. Imperata. 



21. Sacchanim. 



22. Pogonatherum. 



23. Eremocliloa. 



24. Pollinia. 



25. Ischoemum. 



26. RotthoeUia. 



27. Manisuris. 



28. Mnesithea. 



29. Pohjtrias. 



30. Apluda. 



31. Andropogon. 



32. Anthistiria. 



POACEAE. 



Spikelets not articulate with the pedicels, rachilla articulate at 

 the base, flowers 1 to many, lowest one always bisexual, upper ones 

 often male, or barren. 



Spikelets 1 flowered. Glumes 3. 



Leaves ovate cordate 



Leaves linear 



AvENEAE. Spikelets 2 to 6 flowered pan- 

 icled awned 



Chlorideae. Spikelets 1 or more flower- 

 ed biseriate on one or more spikes or panicle. 



33. SpJioerdcaryitm. 



34. Sporoholus. 



35. Eriaclme. 



