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



22 



glume spinulosely tuberculate : 

 glumes 3- (vol. 33, 481) 

 (2) Involucral glumes neither pectinate 

 nor tuberculate. 

 i. Glumes 2 ; spikelets not awned (vol. 



33, 481) ... 

 ii. Glumes 3 ; spikelets with a long 

 awn (vol 33, 481) ... 

 B. Awn of the fertile floret, if present, never 

 kneed and twisted below the knee 

 (Genera 79-104) . 

 (i) Floral glumes typically 3-nerved (Genera 

 79-94). 

 TRIBE X : Sporobole^e.— Floret 1. Involucral 

 and floral glumes very similar ; rhachilla not or 

 rarely produced beyond the floret. Upper floral 

 glumes membranous, acute or obtuse, not changed 

 when ripe, 1-or more or less distinctly 3-nerved, 

 awnless, usually olive-green or grey ; side-nerves, 

 if present, delicite, evanescent above. Seed often 

 free in the delicate pericaro. 



Spikelets small (vol. 33, 482) 

 TRIBE XI : Eragroste^e . — Florets usually numer- 

 ous and far exserted from the glumes. Spikelets 

 variously panicled, sometimes spicate or sub- 

 spicate ; involucral and floral glumes somewhat 

 similar in general appearance ; floral glumes 

 membranous or chartaceous, entire or 2-3-cleft, 

 3-nerved, the nerve evanescent above or excurrent 

 into bristles; side-nerves usually submarginal, 

 glabrous or pubescent or finely ciliate below ; 

 pales often persistent or subpersistent (Genera 

 80-84) . 



a. Floral glumes entire (Genera 80-83). 



(1) Upper involucral glume 3-nerved 



(vol. 33, 486) 



(2) Upper involucral glume 5-nerved 



(vol. 33, 495) 



(3) Upper involucral glume 1-nerved. 



i. Floral glumes ovate subacute or 



obtuse (vol. 33, 495) 

 ii. Floral glumes acute or acuminate 

 (vol.33, 486) 

 6. Floral glumes toothed (vol. 33, 

 495)../ 

 TRIBE XII : Chloride^.— Florets 1 to many. 

 Spikelets usually in 2-ranked secund spikes or 

 spike-like racemes, rarely distinctly pedicellate 

 and paniculate ; floral glumes usually membranous, 

 truncate, emarginate or toothed, 3-nerved ; nerves 

 distant, subparallel, distinct, percurrent or ex- 

 current, and often ciliate all along, the lateral 

 submarginal (in Eleusine there are sometimes addi- 

 tional side-nerves close to the middle nerve of the 

 glume). Awn, if present, straight, usually from a 

 truncate or toothed tip (Genera 85-94). 



a. Floral glumes entire, emarginate or 

 more or less 2-dentate or 2-lobed, 

 muticous or with the middle-nerve 

 running out into an awn or mucro, 

 or reduced in some species of Tri- 

 pogon (Genera 85-93). 

 (1) Spikelets 1-flowered (genera 85-88) . 

 i. Spikes solitary, terminal (set also 

 Chloris) (genera 85-87). 



76. Latipes. 



11. Osterdamia, 

 78. Per otis. 



79. Sporobolus. 



80. Eragrostis. 



81. Halopyrum. 



82. Leptochloa. 



83. Desmostachya. 



84. Diplachne. 



[ii] 



