March 1, 1930.] Revision of the Flora of the Bombay Presidency 



16 



back of the glume deeply sunk 

 between the keels and the callus short 

 or long and acute ; awn glabrous or 

 scabrid, very rarely hirsute (Andro- 

 pogon sp.) ; spikelets awned 

 (Genera 31-37). 



(1) Awn forming a continuation of the 



stipitiform fertile floral glume. 

 Group Amphilophiastrce .— Racemes 

 digitate or racemosely digitate, 

 and then usually very numerous, 

 all more or less peduncled on 

 simple or almost simple culms, 

 or solitary at the end of the culms 

 and their branches and sometimes 

 gathered into a scanty spatheate 

 false panicle, rarely in compound 

 espatheate panicles (Capilli- 

 pedium) (Genera 31-34). 

 i. Racemes in compound espatheate 



panicles (vol. 32, 419) 

 ii. Racemes not in compound espathe- 

 ate panicles (Genera 32-34). 

 (a) Racemes digitate, or many race- 

 mosely arranged on a common 

 axis shorter than the raceme. 



a. Sessile spikelets of all pairs 



hermaphrodite, awned (vol. 32, 

 420) 



b. Sessile spikelets of the lowest 1-3 



or 4 pairs male or neuter and 

 awnless (vol. 32, 424) 

 (6) Racemes solitary at the ends 

 of the culms and branches 

 (vol. 33, 426) 



(2) Awn from the sinus of the 2-fid or 



2- dentate fertile floral glume 

 (Genera 35-37) . 

 i. Group Schizachyriastrce .— Racemes 

 solitary at the ends of the culms 

 and their branches, the branches 

 usually gathered into a narrow, 

 lax, spatheate, false panicle ; joints 

 and pedicels thickened upward ; 

 pedicelled spikelets: male, neuter 

 or suppressed (vol. 32, 428) 

 ii. Group Andropogonastrce. — Racemes 

 2-nate at the end of simple or 

 almost simple culms or gathered 

 into spatheate false or true 

 panicles. 

 (a) Racemes 2-nate on a slender 

 peduncle arising from a flatten- 

 ed spathe ; sessile spikelets alike 

 in sex and form ; joints opaque 

 (vol.32, 429) 

 (6) Racemes 2-nate, with a spathe 

 supporting or surrounding each 

 pair, gathered into often much 

 decompound spatheate panicles ; 

 the lowest pair of one of the 

 racemes homogamous, male or 

 neuter ; all pairs of the other 

 heterogamous ; mostly aromatic 

 grasses (vol. 32, 429) 



31. Capillipedium. 



32. 



33. 



34. 



Amphilophis. 

 Dichanthium. 

 EremoPogon. 



35. Schizachyrium. 



36. Andropogon. 



37. 



Cymbopogcn. 



m 



