Sorghum.] 
CLVII. GKAMINEiE (Stapf). 
141 
over 1 ft. long, 3 lin. broad, pale dull green, bairy on both sides, 
hairs very fine, sometimes from minute tubercles, margins very 
finely cartilaginous and scaberulous, midrib whitish, broad and flat 
above, prominent below, lateral nerves about 5 on each side. Panicle 
linear, up to 2J in. long ; rhachis smooth, glabrous except at the 
shortly bearded nodes ; lower branches about 4-nate, upper 2-nate 
or solitary, filiform, flexuous, undivided, up to over 1 in. long, 
glabrous and smooth or with a few short hairs at the thickened tips. 
Racemes few-noded, bearded at the nodes ; joints If lin. long, 
densely ciliate, hairs reddish or purplish, up to 1 lin. long ; pedicels 
very similar. Sessile spikelet lanceolate, acuminate, 3J-4 lin. long, 
1 lin. wide ; lower glume firmly coriaceous up to half-way, then 
abruptly thinner, more or less chartaceous, 9-nerved, the coriaceous 
portion usually early turning a glossy brown or black, the remainder 
green, rigidly ciliate upwards and hairy on the sides ; upper glume 
coriaceous up to three-quarters, then gradually thinner, as long as 
the lower, lanceolate, acuminate, 5-nerved, hairy upwards. Valve 
of lower floret linear-oblong, 3-3J lin. long, membranous, whitish 
or brownish, ciliate, 2-nerved ; of upper floret ovate, shortly 2-lobed, 
1J lin. long, ciliate ; awn slender, about 1 in. long, kneed at and 
twisted below the middle. Column dark bronze-colour, minutely 
ciliate along the spirals, bristle pale. Lodicules densely ciliate. 
Pedicelled spikelet $ (?) or neuter, linear-lanceolate, 3 lin. long, 
greenish ; glumes membranous, loosely hairy, lower about 7-, upper 
5-nerved ; valves linear-lanceolate to linear, hyaline, ciliate, lower 
entire, 2-nerved, upper 2-lobed, 1 -nerved, with the nerve running 
out into a hair-like mucro. 
Nileland. Sudan : without precise locality, Broun ! 
Perhaps a hybrid of S. versicolor and some cultivated form. The differentia- 
tion of the lower glumes into a thick coriaceous, usually dark coloured lower 
and a thin chartaceous green upper half is very striking, and recalls similar 
conditions in 8. Ankolib, but the transition is quite abrupt. The general habit 
of the plant is that of S. versicolor, but the spikelets are slightly larger and very., 
gradually narrowed from the middle upwards. . * , 
5 ft. high. 
28. S. trichopus A Stapf. Perennial (Barter), up to 5 ffl. high. 
Culms (only the upper parts known) erect, rather slender, smooth, / 
glabrous. Leaf-sheaths glabrous, smooth, the uppermost very long ; / V » 
ligules short, scarious, pubescent ; blades (uppermost) subsetace- 
ously convolute, J ft. long, smooth, glabrous, closely nerved, 2 
primary lateral nerves on each side more prominent below. Panicle 
linear-oblong, erect or somewhat flaccid, 6-10 in. long ; rhachis 
smooth, glabrous ; branches semiverticillate, many fascicled at 
the nodes, very unequal, the longest up to 4 in. long and up to 6- 
noded, repeatedly divided, filiform to capillary, hairy towards the 
tips. Racemes 3-1-noded, each sessile spikelet save the uppermost 
accompanied by an empty pedicel, the uppermost (or in 1-noded 
racemes the solitary spikelet) by 2 empty pedicels ; joints and 
