Brachiaria .] 
CL VII. GRAMINE^ (Stapf). 
509 
Spikelets glabrous, 1^ lin. long ; lower glume finely 
7-nerved; blades 3-4 in. by 1-1^ lin. ... 20. B. rugulosa. 
Annual; spikelets 14 lin. long, glabrous ; racemes slender, 
1- 1| in. long; rhachis narrow (£ lin.); lower glume 
7-iierved; blades 2-5 in. by 1-2 lin. ... ... ... 21. B.distachyoides. 
III. Brizanthal. 
Inflorescence reduced to a solitary terminal I -seriate 
raceme, very rarely augmented by a second raceme at 
some distance below the terminal ; leaf-blades con- 
volute, | lin. in diam., very wiry ; perennial 22. B. dura. 
Inflorescence of 2-8 racemes ; leaf-blades flat, 3-8 lin. 
wide or tightly folded (1 lin.), not wiry ; spikelets very 
turgid, 2 to over 3 lin. long, contracted at the base 
into a more or less distinct stipe ; perennial or annual. 
Racemes usually 1-seriate, falcate, 2-6 in. long ; leaf- 
blades 2-15 in. by 3-8 lin. ; perennial, coarse grasses 23. B. brizantha. 
Racemes 2-4-seriate, more or less straight and suberect ; 
annual grasses with erect rather stout culms. 
Racemes 2-seriate ; spikelets with a conspicuous 
globose stipe ; upper glume 7-nerved, inner sidc- 
nerves prominent, scabrid, its sides like the upper 
half of the lower valve, minutely puberulous ; 
leaf-blades tightly folded, up to 8 in. by over 1 lin. 24. B. ccillopus. ^ 
Racemes irregularly 2-4-seriate, broad ; spikelets 
with a short cylindric stipe, quite glabrous and 
smooth ; upper glume and lower valve evenly 
7-nerved ; leaf-blades flat, 3-8 in. by 3-6 lin. ... 25. B. ubtusijlora. 
IV. LACHNA.NTH.ai. 
Spikelets evenly silkily villous, not or very slightly turgid, 
2- 2|- lin. long. 
Spikelets contracted at the base into a black stipe ; 
lower glume half the length of the spikelet ... ... 26. B. nigropedata. 
Spikelets not contracted at the base into a stipe ; lower * 
glume from less than j to £ the length of the spikelet 27. B. lachnantka. 
Spikelets with a transverse fringe of hairs below the 
glabrous tip, finely silky below the fringe or glabrescent 
in the centre, very turgid, 1^ lin. long. 
Spikelets purplish-silky, the hairs of the fringe forming 
a more or less pointed coma which exceeds the tip. 28. B. serrala. 
Spikelets silvery-white, the hairs of the fringe short, 
hardly exceeding the tip 29. B. brachylopha 
0 QjSr- V ----- ----- - - *1 ' 
V. Ramosas. 
Perennial (see also 39. B. glauca) ... ... ... ... 30. B. arida. 
Annual (except sometimes in 39. B. glauca) ; lower floret 
barren. 
Spikelets more or less rostrate -acuminate or cuspidate, 
about 2 lin. long. 
Spikelets ovate- or oblong-ianceolate, with small tufts 
of white hairs below the tips, otherwise glabrous 
or nearly so, whitish, loosely disposed 31. B . leucacrantha 
