139. GRAMINEJE. 



Group 3. Aveneae. 



Spkts. 2-more-fld., awned 8. Avena. 



Spkts. 2-fld., awnless. GLs. membranous . . . .9. Ojelachne. 

 Group i. Eragrosteae. 



A, Fig. gls. entire :— 



Spkts. panicled or 2-seriatim spicate, not jointed on 

 rhachis 10. Eragrosfis. 



Spkts. sessile and jointed on the short crowded branch- 

 lets of a tall narrow racemiform panicle . . . 11. Desmosfachi/a. 



B. Fl. g-ls. 3-4-toothed 12.. Biplachne. 



Groujj 5. Hordeae. Wheat and Barley. 



Spkts. solitary at the nodes. Fl. gls. few, o-0-nerved . 14. Triticum. 

 Spkts. clustered at the nodes. Spkts. 1-fld. Fl. gl. 5- 



nerved 15. Sordeum, 



Group 6. Chloridese. Marua, Dub-grass, etc. 



A. Spike solitary, terminal :— 



1. Spkts. minute, more or less sunk in the rhachis, 



1-3-fld. Gl. i minute or 0. iii hyaline . . .16. Oropefium. 



2. Spikelets not sunk in the rhachis : — 



a. Spikelets awnless, minute, unilateral on flattened 



rhachis, 1-fld 17. Microchloa. 



h. Spikelets awned : — 



Spkts. 1-2-fld. in pedicelled articulate clusters . 18. Gracilea. 



Spkts. many- fld. Fl. gls. 3-awned . . .19. Tripoff07i. 



B. Spikes digitate, spicate or racemed (rarely only 1 in 



Chloris) :— 



1. Spkts. awnless, 1-fld. Spikes digitate . . .20. Cynodon. 



2. Spkts. awned (exc. Lepfochloa) -. — 



a. Spkts. 2-nate secund on geminate, fascicled 



digitate or whorled terminal erect or radiating 

 spikes : — 



Glumes 3, iii fig. and one or more reduced differ- 

 ently shaped neuters (sometimes reduced to 

 awns) 21. Chloris. 



Spkts. 3-12-fld 22. Eleusine. 



b. Spkts. in racemosely arranged spreading or de- 



flexed finally deciduous spikes. Fl. gls. thin, 

 obtuse or emarginate shorter than the empty 

 glumes 23. Binebra, 



c. Spikes panicled, filiform. Spkts. very minute, 



alt. 1-more-fld., awnless 21. Leptochloa, 



Group 7. Agrosteae. 



I. Glumes thin or membranous : — 



A. Spikelets persistent on their pedicels (with gls. i 



and ii) :— 

 Gl. iii 5-nerved. Spkt. 1-fld 25. Agrostis. 



B. Spikelets jointed on their pedicels (jointed but not 



falling in Polypogon) : — 



1. Spkts. awnless. Gl. iii 1-nerved . . . .20. Sporoboliis. 



2. Spikelets awned :— 



Spkts. 1-2-nate, not laterall.y compressed, pani- 

 cled 27. Garnotia. 



Spkts. latex-ally compressed, keeled, crowded on 

 the short branches of a spiciform panicle. Gl. 



iii hyaline 28. Polypogon, 



II. Fl. glume rigid or hard, usually awned, tightly- 

 wrapping round the fruit. Awn sometimes 3- 



branched 29. Aristida. 



Group 8. Zoysieae. 



A. Gls. 3, narrowly linear, 1-nerved, awned. Spkts. arti- 



culate on rhachis 30. Perotis. 



B. Glumes 2 only. Spkts. articulate on the rhachis or 



not : — 

 Glumes both thickly coriaceous, 5-ribbed and spinous . 31. Tragus. 

 Gl. i coriaceous, shining nerveless, ii membranous . 32. Zoyka. 



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