i88 
CLXIII. GRAMINE^. 
Racemes scattered; rachis narrow; spikelets 
lanceolate . . . .30. Brachiaria 
Racemes crowded; rachis narrow; spikelets 
ovate . . . . . 31- Urochloa 
Racemes numerous on a broad flat rachis . 32. Stenotaphrum 
S pikelets distant secund on unilateral racemes. 
Spikelets not awned, armed with hooked 
bristles . . . .33. PseudechinoLjENa 
Spikelets awned, hairy . . . .34- Oplismenus 
Spikelets densely crowded on unilateral 
racemes awned or not . .35. Echinochloa 
Inflorescence panicled lax; spikelets quaqua- 
versal. 
Upper floret only fertile; glume III not 
indurate. 
Glume I reduced to a small black-edged 
cup.36. Eriochloa 
Glume I ovate or lanceolate; glume II 
fringed with hairs. 
Glume IV awned . . . •37- Alloteropsis 
Glume I ovate or lanceolate; glume II not 
hairy, no awns. 
Spikelets not subtended by bristle-like 
branches. 
Spikelets not gibbous. 
Panicles lax; no basal appendages 
in front of glume IV. 
Glumes not crested at tip; glume 
I shorter than II . . . 38. Panicum 
Glumes not crested at tip; glumes 
I and II equal . . .39- Hemigymnia 
Glumes crested at tip . . 40. Acroceras 
Panicles dense spiciform; spikelets 
lanceolate acute . . .41. Hymenachne 
Panicles lax, basal appendages in 
front of glume IV . . .42. Ichnanthus 
Spikelets gibbous. 
Panicles spike-like cylindric . . 43. Sacciolepis 
Panicles wide spreading . .44- Cyrtococcum 
Spikelets subtended by bristle-like 
branches . . . .45- Setaria 
Spikelets laterally compressed silky . 46. TRiCHOLa-NA 
Prostrate grass; spikelets few secund in 
one row, grain enclosed in 
thickened rachis . . •47- Thuarea 
Stiff creeping ascending grasses; panicles 
unisexual corymbose or capi¬ 
tate; females with very long 
pointed bracts . . .48. Spinifex 
Small slender erect or sub-erect grasses re¬ 
sembling Panicum, but both 
florets fertile and glumes III 
and IV coriaceous indurate . 49. Isachne 
IV. Arundinelle.;e. Slender grasses. Spikelets panicled. Florets 2, 
lower one awnless or barren; rachilla not continued beyond the upper floret. 
Glume I ovate. Glume II longer, lanceolate. Glume III as long as glume I 
Glume IV smaller, oblong, with 2 short lobes; awn from between the lobes. 
Awn short . . . . . .50. Arundinella 
