80 
CLVII. GRAMINEtE (Stapf). 
[Ccelorhachis. 
on the back, keels winged, wings widened upwards, the obtuse tips 
slightly overlapping, intracarinal nerves 4-5, very faint ; upper 
glume slightly shorter, oblong, acute, thin, 3-nerved, glabrous. 
Valve of lower floret ovate-oblong, acute, 1 \ lin. long, thinly hyaline, 
faintly 2-nerved, without a valvule ; of upper floret slightly shorter 
than that of the lower floret, similar in shape but 3-nerved and 
glabrous ; valvule of the same length, minutely truncate, very 
faintly 2-nerved. Anthers dark purple, J lin. long. Pedicelled 
spikelet reduced to 2 lanceolate brown glumes, 1-1J lin. long. 
Mozambique Distr. Portuguese East Africa : Zambesi Delta ; Kongone 
River, Kirk ! 
The racemes are slightly compressed parallel to the backs of the sessile spike - 
lets, with the result that the racemes seen from one side exhibit all the lower 
glumes of the sessile spikelets overlapping like fish-scales, whilst, seen from the 
opposite side, the y show a succession of joints and pedicels, with the alternating 
more or less obliquely linear interstices between them. 
2. C. afraurita, Staff in Bull. Soc. Bot. Fr. lv. (1908), Mem. viii. 
98. Perennial, glabrous : innovations intra vaginal, forming dense 
tufts of leaves with much compressed sheaths. Culms over 3 ft. 
high, many-noded, erect, branched above, Avith the branches solitary 
or in the upper part 2 or more, unequal, the longer divided again, 
the whole collected into a loose leafy panicle. Leaf-sheaths smooth, 
prominently nerved, the lower laterally compressed, broad, up to 
1 ft. long, the upper more or less terete, shorter than the internodes ; 
ligules very short, truncate, ciliolate ; blades long-attenuated from 
the base which passes gradually into the sheath, acute, complicate, 
up to 2J ft. long, 3J lin. wide, somewhat rigid, subglaucous or reddish, 
smooth apart from the upwards rough margins, midrib acutely 
keeled, broad and whitish above, nerves close and fine. Panicle 
1 ft. long or longer, the branches and branchlets subtended by 
leaves with narrow blades or reduced to spathes. Racemes fascicled, 
unequally peduncled, overtopped by the leaves of the primary 
branches, subcylindric, slender, straight, green, 6-10 lin. long, \ lin. 
thick ; joints 1 lin. long, acutely triquetrous, hollow, glabrous, 
smooth, with a subulate appendage ; pedicels similar, 1J lin. long, 
dorsally compressed, with a short tooth above the inner, and a lanceo- 
late wing-like appendage, J lin. long, from the outer angle. Sessile 
spikelet with a short broad indistinct callus, 1J-1J lin. long, oblong, 
dorsally much compressed, imbricate, glabrous. Glumes subequal ; 
lower coriaceous, flat on the back, keels equally or unequally 
winged, with, the wings confluent, or produced into obtuse lobes at 
the tips, . nerves 5, fine ; upper slightly shorter, oblong, subacute, 
thin, finely 3-nerved, wingless. Valve of lower floret equalling 
the upper glume, oblong, obtuse, 2-nerved, without a valvule ; 
of upper floret elliptic, obtuse, thin, § lin. long, 1-nerved, with an 
equally long subobtuse valvule. Anthers purple, not quite J lin. 
