68 
CLVII. GRAMINEiE (Stapf). 
[Elyonurus. 
valvule 0. Upper floret similar to the lower, 1 \ lin. long : valve 1- to 
obscurely 3-nerved, ciliolate ; valvule very minute, narrowly linear 
or absent. Anthers purple, 1-1 J lin. long. Pedi celled spikelet 
obliquely ovate to lanceolate, 1 J lin. long. Lower glume acuminate, 
mucronate or aristulate, rigidly ciliate along one margin, with a 
balsam-duct within it, glabrous on the other, glabrous or minutely 
puberulous on the back, faintly 5-nerved, otherwise as in the ses- 
sile spikelet, but upper floret <$. 
Upper Guinea. Prench Guinea : Kouroussa, Pobeguin, 517 ! Timbo, 
PoUguin, 1772 ! 
6. E. tenax, Stapf in Kew Bulletin, 1909, 122. Culms only 
known from their upper parts, over 1 ft. long, branched ; internodes 
glabrous or hairy upwards. Leaves quite glabrous ; sheaths smooth ; 
ligules reduced to a shortly and densely ciliate rim; blades long- 
tapering from the base upwards, 1-1J lin. wide below, convolute, 
spinulously rough along the midrib and the margins. Racemes 
few, distant, shortly peduncled, laterally exserted from a linear 
acute spathe, hairy, whitish, 1-1 J in. long ; rhachis tough ; joints 
slender, 1J lin. long, densely white-villous all over excepting 
the inner face ; pedicels very similar to the joints. Sessile spikelet 
ovate-lanceolate, including the short and hairy callus 3 lin. long. 
Glumes unequal ; lower subchartaceous, 2-fid to J or ~ into subulse, 
rigidly pectinate-ciliate from the base upwards with the cilia longest 
towards the subulse, white-villous on the back, balsam-ducts dis- 
tinct ; upper glume 2 lin. long, lanceolate, acute, membranous, 
minutely pubescent or glabrous on the back, 3-nerved. Lower floret 
l|-lf lin. long : valve oblong-lanceolate, acute, hyaline, obsoletely 
2-nerved ; valvule 0. Upper floret : valve similar to the lower, 
over 1 lin. long, obsoletely 3-nerved : valvule J lin. long. Anthers 
purple, 1 lin. long. Pedicelled spikelet lanceolate, up to 2 lin. 
long. Lower glume mucronate, acuminate, entire, rigidly ciliate 
along one margin with a balsam-duct within it, almost mediate 
on the other, more or less pubescent on the back, otherwise as in 
the sessile spikelet, but with the upper floret 
Upper Guinea. French Guinea : Kankan, Bardon, 15 ! 36 ! 
7. E. Welwitschii, Rendle in Cat. Afr. PI. Welw. ii. 137. Peren- 
nial, compactly csespitose ; innovation-shoots intra vaginal, more or 
less compressed below, rising with the culms from an oblique hard 
rhizome. Culms erect, slender, up to 4 ft. high, glabrous, simple 
for 3 or 4 nodes, then sparingly branched, with the branches erect, 
slender, flowering. Basal leaf -sheaths persistent, those of the 
innovations compressed, purplish, like the others glabrous, smooth, 
the intermediate and upper cauline ones usually shorter than the 
internodes ; ligules membranous, short, truncate, ciliolate ; blades 
very narrowly linear, tapering to a fine point, up to 1 ft. or more 
