Digitaria .] 
CLVII. GRAMINE^J (Stapf). 
427 
Spikelets up to 1 lin. long, 2-6-nate, dense, more or less 
imbricate, their upper glume about half as long as the 
fertile floret, covering it very imperfectly ; racemes 
5-9 in. long ; rhachis trigonous and marginate at the 
base only, upwards flattened and winged ... ... 15. D. seminuda. 
( d ) Trichaohne. 
Perennial ; lateral fringe of hairs purplish or silvery. 
Culms up to 6 ft. high, 2-noded, nodes glabrous ; 
blades tightly convolute, at length unrolling, up to 
over 1 ft. by 2 lin. (flattened out) ; pedicels 
angular, scabrid ... ... ... ... ... 16. D. pellita. 
Culms 1-3 ft. high, 2-4-noded., nodes bearded; blades 
flat, 2-5 in. by 1£-3| lin. ; pedicels terete, smooth 
or almost so ... ... ... ... ... ... 17. D. Brazzce. 
Annual. 
Spikelets lj-lf lin. long, with a copious silvery or 
purplish lateral fringe of hairs ; blades flat, 2-6 in. 
by 2—1 lin. ; pedicels terete, scaberulous ... ... 18. D. gay ana. 
Spikelets l-l| lin. long, with the fringe of hairs 
shorter, ultimately bronze-colour to rufous and 
spreading. 
Nodes bearded, secondary branchlets of panicle 3-6 
(rarely 15) lin. long, fascicled with 2-4 simple 
pedicels; spikelets with lateral fringes of hairs ... 19. D. Lecardii. 
Nodes glabrous ; secondary branchlets 0 or only at 
the very base and quite short ; spikelets with 
one transverse and two lateral fringes of hairs . . . 20. D. xanthotricha. 
( e ) Clavipil^e. 
Spikelets hairy ; fertile floret early darkening and vividly 
contrasting with the rest of the spikelet. 
Hairs of spikelet very short, obtusely clavate ; barren 
valve 5-nerved ; pedicels with distinctly hispidulous 
or minutely bearded tips. 
Rhachis of racemes lin. wide ; spikelets 1 lin. 
long 21. D. ternata. 
Rhachis of racemes lin. wide ; spikelets § lin. 
long ... ... ... ... ... ... ... 22. Z). melanochila. 
Hairs of spikelets elongate, with very acute clavate 
tips ; barren valve 7 -nerved, the submarginal nerve 
very faint ; pedicels with scabrid or scaberulous 
tips <2U>. D. delicatula. 
Spikelets glabrous ; barren valve 7 -nerved ; fertile floret 
darkening late 24 . D. Iburua. 
Perennial. 
(/) ClRRIFILiE. 
Spikelets hairy. 
Racemes racemosely arranged, much shorter than 
the common axis and more or less appressed to 
it ; spikelets 1£ lin. long ... ... ... 25. D.botryostachya. 
