CLXIII. GRAMINE^. 
187 
Spikelets in pairs, 2-flowered; racbis fragile. 
Racemes solitary. 
Glumes not pectinate, awned . . 8. Pogonatherum 
Glumes pectinate; spikelets secund awn¬ 
less . . . . ■ 9 - Eremochloa 
Racemes solitary or several together, 
yellow- or white silky, awned . 10 Eulalia 
R acemes several together terminal slender 
fragile, awned . . .11. Pollinia 
Racemes 2, rarely i or more, appressed, 
rather tliick, fragile. 
Spikelets paired, i pedicelled, i sessile; 
glume I, stilf . . .12. Ischa-mum 
Racemes solitary. 
Spikelets sunk in pits in a jointed rachis. 
Sessile spikelets solitary. 
Racemes numerous, cylindric, on long 
peduncles, awnless . . .13. Cielorrachis 
Racemes very short; spikelets globose 
pitted.14- Manisuris 
Racemes tough, hardly disarticulate, 
flattened; pedicelled spikelet 
occasionally awned . • Ha^marthria 
Sessile spikelets 2 . . . .16. Mnesithea 
Spikelets ternate in short racemes enclosed 
in a pedunclcd spathe . • I 7 - Apluda 
Racemes short, panicled. 
Racemes of i sessile bisexual and 2 
pedicelled male spikelets . .18. Chrysopogon 
Racemes of many pairs of spikelets, 
branches of panicle whorled . 19. Vetiveria 
R acemes shortly peduncled digitate or 
panicled; awn from the stipiti- 
form glume IV . . . 20. Amphilophis 
Racemes solitary or few at end of culm; 
glume IV reduced to an awn . . 21. Dichanthium 
Racemes solitary at ends of branches of 
culm with a spathe-like bract 
at base of branches . .22. Schizachyrium 
Racemes binate with spathe at base, in 
large panicles; aromatic grasses 23. Cymbopogon 
S pikelets in clusters of 5 or more, the 4 
lowest forming an involucre 
round the upper bisexual ones; 
panicles often v'^ery tall . . 24. Themeda 
Raceme solitary; spikelets rounded, awn 
very long hairy . . .25. Heteropogon 
III Panicace^. Spikelets articulate upon pedicels or deciduous with 
them; I- or 2-flowered, rarely awned; rachis not breaking up into joints. 
§ Panice.e. Glumes membranous. Glume I usually small or suppressed; 
upper floret only fertile, not silky. 
Rachis flat ribbon-like with the spikelets in i 
or more rows on one side. 
Racemes digitate; spikelets lanceolate . 26. Digitaria 
R acemes 2 digitate; spikelets ellipsoid-lan¬ 
ceolate alternate . . . 27. Axonopus 
Racemes scattered; rachis broad; spikelets 
round . . . . .28. Paspalum 
Racemes scattered; rachis broad; spikelets 
ovoid-globose . . . 29. Paspalidium 
