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



24 



with or without alternating fine straight awns from 

 the sinuses. 



Floral glumes 9-cleft (vol. 33, 766) 



TRIBE XIV : Or yzk^e.— Spikelets all alike or more 

 or less heteromorphous and unisexual. Fertile 

 Floret 1, awned or not, terminal with 2 minute empty- 

 florets (floral glumes) below it or solitary. Involucral 

 glumes very minute or confluent into an annular 

 rim or suppressed ; pale 3-9-nerved ; stamens 

 usually 6, rarely more, or 1-3. 



a. A floating glabrous grass ; spikelets 



awned (vol. 33, 769) 



b. Leafy tall grasses, not floating ; spike- 



lets usually awnless. 



(1) Keels of floral glume and pale pec- 



tinately ciliate ; spikelets awnless 

 (vol. 33, 768) 



(2) Keels of floral glume and pale not 



pectin ately ciliate ; spikelets rarely 

 awned (vol. 33, 767) ... 

 TRIBE XV : Festuce^e.— Involucral glumes more, 

 or less resembling the floral ones in general appear- 

 ance. Fruiting florets 2 to many, very rarely 1, 

 often much exserted from the glumes. Floral 

 glumes 5-or more-nerved (rarely 1-3-nerved). 

 Awns, if present, terminal or subterminal, never 

 geniculate. 



a. Leaves narrow, not tessellately nerved ; 

 fruiting glumes without submarginal 

 bristles. 

 ( 1) Leaves reaching 30 cm . long or more, 

 flaccid ; inflorescence in long, 

 often interrupted cylindric spikes 

 (vol. 33, 769) 

 Leaves less than 5 cm. long, rigid, 

 pungent ; inflorescence in short 

 subcapitate spikes (vol. 33, 769)... 

 Leaves broad, tessellately nerved ; 

 fruiting glumes with reflexed sub- 

 marginal tubercle- based bristles (vol. 

 33, 770) 



Horded. — Spikelets sessile, singly or 

 more or less sunk in the hollows of the 

 rhachis of a simple spike ; florets 1 or more. 



a. Spikelets solitary at the nodes of the 

 spike. 



(1) Spikelets with their median plane 

 radial to the rhachis ; florets 1-2 ; 

 floral glumes membranous to sub- 

 hyaline, 3-nerved (vol. 33, 770) ... 

 Spikelets with their median plane 

 tangential to the rhachis ; floral 

 glumes more or less ventricose, 

 keeled upwards, 5-9-nerved (vol. 

 33, 770) ... 



b. Spikelets in groups of 3 at the nodes of 

 a dense spike ; floral glumes 5-nerved 

 (vol. 33,771) ... 



Blades articulate on the sheath and transversely 

 veined. 



TRIBE XVII : Bambuse^e.— Shrubs or trees ; spike- 

 lets all of one kind ; florets few to many (rarely 1); 

 lower 2 or more glumes empty, gradually increas- 

 ing in size up to the flowering, with sometimes small 

 terminal imperfect ones ; floral glumes subherbace- 



(2) 



TRIBE XVI 



in clusters 



(2) 



95. Enneapogon. 



96. Hygrorhiza. 



97. 



Honialocenchrus . 

 Oryza. 



99. 



100. 



Elytrophorus. 

 Aeluropus. 



101. Centotheca. 



102. Lepturus. 



103. 



104. 



2. 



Triticiim. 

 Hordeum. 



[13] 



