142 
CLVII. GR AMINE AS (Stapl). 
[ Sorghum . 
pedicels alike, finely filiform, ciliate, cilia up to \ lin. long, joints 
2J-3 lin. long, pedicels 1J-2 lin. long. Spikelets lanceolate to 
lanceolate-oblong, subacuminate, 2-2J lin. long, pale brown to 
straw-colour. Glumes equal, chartaceous, thin ; lower minutely 
truncate, loosely hairy on the back, scabrid on the subterminal 
keels, finely 9-nerved ; upper very similar, 5-nerved. Valves equally 
long ; of lower floret broad-lanceolate-oblong, 2 lin. long, hyaline, 
densely ciliolate upwards, 2-nerved ; of upper floret oblong, ciliolate 
upwards, 3-nerved, lobes adnate to the awn ; awn 4 lin. long, very 
slender, kneed at and twisted below the middle. Lodicules glabrous. 
Anthers 1J lin. long. Grain oblong, 1 lin. long, reddish-brown. — 
Andropogon nutans (forma), Franch. Contrib. FI. Congo Frany. 21 : 
not of Linn. A. trichopus, Stapf in Kew Bulletin, 1897, 287. 
Upper Guinea. Northern Nigeria : on open plains at Nupe, Barter , 1375 ! 
Two specimens collected in French Guinea ( Pobeguin , 507 from Kouroussa 
and 1731 from the Baffing valley) may have to be connected with S. trichopus. 
They dissect very similarly, but have much longer and perfect awns (5-6^ lin. 
and up to 12 lin. respectively) and glabrous peduncles. But as neither is 
accompanied by complete culms "ahd leaves, their status is still doubtful. 
They and S. trichopus as originally described approach the American S. nutans, 
Linn., very closely indeed. 
29. S. micratherum, Stapf. Perennial, tufted, up to 3 ft. high. 
Culms erect, rather slender, smooth, glabrous. Leaf-sheaths 
glabrous except at the appressedly bearded nodes, or the lowest 
and those of the innovation-shoots sparingly hairy towards the 
mouth, smooth, mostly shorter than the internodes ; ligules short, 
scarious, slightly pubescent and ciliolate ; blades linear ; of the 
lowest leaves and the innovations short, 1-3 in. long ; of the upper 
much elongated and tapering to a long fine point, up to 7 in. long, 
2-2J lin. wide, rather rigid, flat or convolute, pale dull green, smooth 
below, somewhat rough above, glabrous, rarely with a few scattered 
hairs, closely nerved. Panicle linear to linear-oblong, erect, often 
more or less secund, 6-9 in. long ; rhachis smooth, glabrous ; branches 
semiverticillate, 2-4 from a node, unequal, the longest up to 2 rarely 
3 or even 4 in. long and 3-4-noded, filiform, divided only once, that 
is the branchlets of the first order which are hairy below their tips 
bearing the 4-1-noded racemes ; each sessile spikelet except the 
uppermost accompanied by an empty pedicel, the uppermost (or 
in 1-noded racemes the solitary spikelet) by two empty pedicels ; 
joints and pedicels alike, finely filiform, ciliate, cilia up to almost 
1 lin. long, often purplish, joints 2-2J lin. long, pedicels 1J-2 lin. 
long. Spikelets linear-lanceolate, acuminate, 2J-4 lin. long, pale 
brown ; glumes subequal, chartaceous, lower minutely truncate, 
loosely villous on the back, with the hairs often purplish, finely 
9-nerved, upper similar but slightly longer, 5-nerved ; valves 2J-3 
lin. long ; of lower floret lanceolate-oblong, minutely ciliate Upwards, 
2-nerved; of upper floret oblong, ciliolate upwards, 3-nerved, lobes 
