234 
CL VII. GRAMINE^S '(Stapf). 
[. Andropogon . 
tightly inrolled, glabrous, 14-2 in. long; peduncle more or less 
exserted terminally. Racemes 3-15, in corymboid panicles, the 
lateral sessile, 1 to over 2 in. long, very slender, flexuous and loose, 
glabrous ; joints finely filiform, 1J to over 24 lin. long, very 
slightly thickened upwards, quite glabrous, with scaberulous margins 
or sometimes with a few very short cilia, tips minutely cupular 
and denticulate ; pedicels similar, up to 1| lin. long, more often 
obscurely ciliate. Sessile spikelet narrow, linear-lanceolate, about 
2 lin. long, dull brownish-green, quite glabrous including the very 
short callus. Glumes subequal, lower acuminate, acute or sub- 
2-denticulate, nerveless and slightly sunk between the stout upwards 
scaberulous keels ; upper very acute, 1 -nerved, slightly shorter, 2- 
to sub-3-nerved. Lower floret reduced to a linear-oblong 2-nerved 
hyaline valve, minutely ciliolate at the tips, 1J lin. long. Upper 
floret ^ : valve lanceolate-oblong, very narrow, entire, 1-nerved, 
mucronate, eciliate ; valvule ovate-oblong, J-| lin. long, nerveless. 
Anthers over 1 lin. long. Pedicelled spikelets $ , lanceolate, acumi- 
nate, about 2 lin. long ; glumes subequal, lower chartaceous, 3-nerved, 
mucronulate, upper slightly shorter, 1-nerved to sub-3-nerved, 
acute; valves of both florets hyaline, of the lower 14 lin. long and 
2-nerved, of the upper slightly shorter, sub-3-nerved, obscurety 
mucronulate. — Th. & Hel. Durand, Syll. FI. Congol. 624. A. ap- 
pendiculatus, var. genuinus , Durand & Schinz, Etudes FI. Congo, 
314 ; Th. & Hel. Durand, l.c. ; not of Hack. 
Lower Guinea. French Congo : between Mokino and Mongol, Brazza, 234 ! 
Belgian Congo : in dry sands at Stanley Pool, Hens, 319 partly ! 
18. A. chrysostachyus, Steucl. Syn. PL Glum . i. (1855) 377. 
Perennial, densely tufted, with intravaginal innovations, over 3 ft. 
high, few-noded, simple or with 1-2 slender undivided flowering 
branches from the upper nodes, smooth, glabrous, the lowest internode 
deeply grooved on one side. Leaf -sheaths subterete or the lower and 
particularly those of the innovations compressed and keeled, glabrous 
or sparingly hairy, very smooth, the basal persistent ; ligules mem- 
branous, very short, truncate, ciliolate with a beard of hairs behind 
them ; blades linear from an equally wide base, long-attenuated 
to a setaceous point, the lower up to over 6 in. long and 2 lin. wide, 
flat, subglaucous, somewhat rigid, somewhat bearded at the base, 
otherwise glabrous or very loosely hairy on the back all along, 
smooth except at the spinulosely scabrid margins, midrib whitish, 
slender, rounded and prominent below, lateral nerves faint ; sub- 
tending leaves with a spathaceous subherbaceous narrow sheath 
up to over 6 in. long, usually with a short herbaceous blade. In- 
florescence a scanty corymb or corymboid panicle of 3-5 racemes ; 
common axis 4-9 lin. long, rarely shorter, the bare bases 
of the lowest racemes up to 3 and even 6 Kn. long, filiform, 
