320 
cl vii. GRAMiNEiE (Stapf). [ Hyparrhenia . 
pubescent ; upper glume membranous, acute, 3-nerved, ciliate ; 
valves hyaline, oblong-linear, ciliate, the lower 3§-4 lin. long, 2-3- 
nerved, the upper slightly shorter, 1 -nerved ; anthers up to 2 lin. 
long .— Cymbopogon bagirmicus , Stapf in Journ. de Bot. 2me ser. ii. 
V 214. Andropogon bagirmicus, . Cheval. Sudania, 166. Andropogon 
brachypodus , Stapf ex Cheval. Sudania, 167 (name only). 
North Central. Bagirmi : Moito, Baro, and Aouni, Chevalier , 9849 ! 9795 ! 
9850 ! Between Fort Lamy and Mandjofa, Chevalier , 10290 ! 
15. H. grallata, Stapf. Perennial, over 4 ft. high, densely tufted 
with intravaginal innovations. Culms stiffly erect, comparatively 
slender, up to 2 lin. in diam., terete or very slightly compressed below, 
almost wiry, glabrous and smooth, simple and 5-6-noded below the 
panicle. Leaf-sheaths terete or the lowermost compressed upwards, 
firm, striate, glabrous and smooth or the lower more or less hirsute 
upwards, the lower slipping off the stem, the upper tight ; ligules 
very short, truncate, scarious, glabrous or hairy from behind, cilio- 
late ; blades linear from an equally wide or very slightly attenuated 
base, long-tapering to a fine point, up to 6 or even 10 in. by 2-2J lin., 
hard, rigid or flexuous in the upper part, flat, more or less greyish- 
villous when young, at length more or less glabrescent, scaberulous 
on the nerves on the upper side, margins almost smooth except 
towards the tips ; midrib very slender, lateral nerves numerous, 
very close, slightly prominent above, about 4 primary ones with 
3 secondary between. Inflorescence 1J-2 ft. long, of 4-5 very 
distant few-rayed mixed or more often simple tiers, or the lowest 
branch undivided and few-noded ; subtending leaves with blades 
rapidly decreasing upwards, the lower resembling the preceding 
leaves ; simple rays 3-4 in. long, filiform, glabrous or more or less 
hairy. Spatheoles very narrow, sublinear to linear-lanceolate, acu- 
minate, very early tightly inrolled, 3-4J in. long, subscarious, dull 
green or reddish, more or less softly hairy to almost villous ; peduncles 
stoutly filiform, equalling the spatheoles or slightly exceeding them, 
slightly curved upwards or almost straight, pubescent with some 
fine longer hairs in the upper part. Racemes slender, somewhat 
loose, at length more or less spreading, but not epinastically 
reflexed, up to over 2 in. long, about 12-awned per pair, loosely 
greyish-villous ; bases stiff, slender, filiform, one very short, the 
other 3-4 lin. long, more or less hairy or almost glabrous ; joints 
about 6, finely filiform, very obliquely truncate, 2 lin. long, densely 
white-villous on the back and ciliate ; pedicels similar, up to over 
3 lin. long. Homogamous pair of spikelets 1 at the base of the 
lower raceme only. Fertile spikelets sublinear, up to 5 lin. long 
(including the callus), pale brown, loosely greyish-villous ; callus 
very slender, pungent, 1J- lin. long, white-villous all over. Glumes 
equal, both hairy ; lower chartaceous, somewhat rounded on the 
back, truncate, margins involute all along, nerves about 7 with 2 
