andropogone,e 183 



Leaf-sheaths covered densely with \ 5. A. asper. 



bristly hairs. J 



Leaf-sheaths covered with soft hairs ... 6. A. Wighti- 



anus. 

 Pedicels of upper spikelets not half as long as the sessile 

 spikelet. 



Leaves glabrous and narrow ... ... 7. A. monticola. 



AA. The lowest one or more sessile spikelets in all racemes, or 

 at least in one or two, differing from all those above. 



Racemes digitate, rarely solitary, spikelets all alike in form 

 but differing in sex. 



Pedicel V$ as long as the sessile"! 



spikelets; nodes usually glabrous ; > 8. A. caricosus. 

 ligule usually short and membranousj 

 Pedicel % as long as the sessilel 

 spikelets ; nodes bearded ; ligule > 9. A. annulatus. 

 large and membranous. J 



Racemes solitary ; lower sessile spikelets very unlike the 

 pedicelled or upper spikelets which are cylindric 

 Margin of glume I of the pedicelled^ 



spikelet unequally winged ; ligule \ 10. A. contortus. 

 is a broad truncate membrane. J 



Racemes two, both sessile, or one sessile and the other pedi- 

 celled on a peduncle which is more or less sheathed 

 by a proper spathe, divaricate or defiexed. 



Leaf base broad and cordate ... ... II. A. Schcenan- 



thus. 



N.8. — This genus is now split into several separate genera, each subgenus being 

 raised to the rank of a genus. But in this book the nomenclature adopted in 

 Hooker's Flora of British India is followed. 



