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



14 



B. Spikelets of each pair more or less dis- 

 similar, at least as to sex, the pedicelled 

 male, neuter or suppressed (Genera 

 15-21). 

 i. Sessile spikelets small, globose, foveolate, 

 1-flowered, pedicelled very dissimilar ; 

 joints and pedicels fused (vol. 32, 28) ... 

 ii. Sessile spikelets not globose (Genera 

 16-21). 



a. Sessile spikelets winged from the trans- 



versely rugose or muricate lower 

 involucral glumes, 1-flowered, pedi- 

 celled very dissimilar; joints and 

 pedicels fused (vol. 32, 29) 



b. Sessile spikelets not winged (Genera 



17-21) . 



(1) Racemes usually more or less villous, 



very rarely glabrous, never cylindri- 

 cal, joints and pedicels moderately 

 stout, gaping, 

 i. Spikelets 2-flowered, very villous all 

 over, the sessile sometimes 2 at a 

 node and sub-opposite (vol. 32, 30) 

 ii. Spikelets 1-flowered ; racemes more 

 or less villous from the joints and 

 pedicels or the edges of the spike- 

 lets, rarely glabrous ; lower in- 

 volucral glume with a transparent 

 oil-duct inside each keel or a fringe 

 of penicillate warts (vol. 32, 30) ... 



(2) Racemes glabrous, cylindrical, parti- 



cularly when the spikelets are 

 closed (Genera 19-21). 

 i. Pedicels and joints fused. 



(a) Racemes stout, few from each 

 culm ; sessile spikelets 2-flower- 

 ed, pedicelled male or neuter 

 (vol. 32, 31) 



(b) Racemes slender in ample spathe- 

 ate panicles ; sessile spikelets 

 1-flowered (vol, 32., 31) 



ii. Pedicels free from the joints ; 

 racemes usually in terminal and 

 lateral spatheate fascicles or fas- 

 tigiate panicles ; coarse tall grasses 

 (vol. 32, 32) 

 4. Sub-tribe : Saccharines. — All spikelets alike 

 in shape and sex, or if different in sex, 

 then the pedicelled female (Genera 22-25). 

 A. Group Saccharastrce \ — Racemes in more 

 or less compound panicles or racemosely 

 arranged on an elongated common axis ; 

 spikelets 1-flowered ; awn from the sinus 

 of the 2-dentate floral glume or from the 

 tip of the entire valve or (Genera 22-24) . 

 i. Rhachis quite tough ; racemes in spike- 

 like or thyrsoid solitary panicles ; all 

 spikelets pedicelled, muticous (vol. 32, 

 281) 

 ii. Rhachis of racemes readily disarticulating. 

 a. vSpikelets in a wide, often thyrsoid, 

 more or less plumose and silvery 

 panicle, 2-flowered, usually awned, 

 rarely mucronate or awnless (vol. 32, 

 283) 



15. Manisuris. 



16. Peltophoras . 



17. Lasiurus. 



18. Elyonurus. 



19. Rotboellia. 



20. Ophiurus. 



21. Coelorrhachis . 



22. Imperata. 



23. Saccharum. 



[3] 



