Cymbo'pogon. ] clvii. graminete (Stapf). 
267 
Blades folded or flat, up to 1 lin. wide, 
midrib very slender ; most of the tiers, 
except the peripheral, with compound 
and even decompound rays, hence 
panicle rich and more or less dense. 
Panicle obovoid, formed of more or less 
dense balls borne on long (f-l-J ft.) 
branches ; fertile spikelets 3-3 1 lin. 
long, their lower glume with 4 intra- 
carinal nerves 
Panicle narrow, long, much interrupted 
below ; lower primary branches not 
much exceeding the adjacent inter- 
nodes, their heads close to the culm ; 
fertile spikelets 2^-3 lin. long, their 
lower glume with 2 short or no intra- 
carinal nerves 
Blades smooth except on the upper margins ; 
awn 5-8 lin. long, differentiated into a 
twisted column and a bristle spreading at 
a right angle ; base and adjacent pedicel 
of sessile raceme not tumid 
Lower glume of fertile spikelet deeply grooved at 
least below the middle, often with a more or 
less distinct basal gibbosity between the 
downwards obtuse keels ; joints and pedicels 
glabrous or pubescent on the back ; awn 
always perfect. 
Culms at least up to 4 ft. high, about 5-noded 
below the panicle ; blades up to over 2 lin. 
wide, smooth ; racemes suberect, in 4-5- 
rayed contracted tiers 
Culms 1-2 ft. high, 1-2-noded below the panicle, 
very slender ; blades under 1 lin. wide ; 
racemes in few-rayed tiers. 
Leaf-blades smooth below ; racemes glaucous- 
green, hardly diverging 
Leaf-blades minutely scaberulous on all the 
nerves on the back ; racemes richly 
tinged with violet and brown, divaricate 
at right angles or deflexed 
X JKeels of lower glume of fertile spikelets winged up- 
wards ; panicle decompound. 
Panicle much interrupted or if more continuous, 
at least all its parts more or less loose ; ultimate 
tiers few- to 10-rayed, corymboid, rays 6-4 lin. 
long ; lower glume of fertile spikelet with 2-4 
intracarinal nerves above the middle, of 
pedicelled spikelets 3-5-nerved ; blades l|-2 
lin. wide 
Panicle much contracted ; ultimate tiers 2-rayed, 
rays l|-2 lin. long ; lower glume of fertile 
spikelet with 2 percurrent intracarinal nerves, 
of pedicelled spikelet 7-9-nerved ; blades 
2|-4 lin. wide ... 
ffFertile spikelets awnless; leaves in dense fascicles 
from a short annulate rhizome ; basal sheaths 
wide below, cinnamon-coloured on the inner side; 
2. C. sennarensis. 
3. C. proximus. 
4. C. plurinodis. 
5. C. commutatus. 
6. C. floccosus. 
7. C. divaricatus. 
8. G. Afronardus. 
9. C. validus. 
