264 
clvii. # GRAMiNEiE (Stapf). [Andropogon. 
43. A. macrophyllus, Stapf. Calms very tall, stout, up to \ in. 
in diam., glabrous and smooth, branched upwards. Leaf-sheath 
terete, tight, villous along the edges, otherwise glabrous and 
smooth; ligules scarious, truncate, up to 2 lin. long, ciliolate; 
blades linear, passing gradually into the sheath or long-attenuated 
below, tapering to a setaceous point, over 3 ft. long and up to 1J in. 
wide, firm and somewhat rigid, glabrous, smooth except for the 
scabrid edges, midrib whitish, flat above, rounded on the back, 
primary lateral nerves 7-8 on each side, fine, slightly prominent. 
Inflorescence a narrow contracted spatheate. panicle up to over 
3J ft. long, of up to 10 downwards mixed few-rayed tiers ; spathes 
with well-developed blades ; rays filiform, somewhat stout, very 
unequal. Spatheoles linear-oblanceolate passing into a short bristle, 
subherbaceous to scarious, greenish, slightly tinged with purple or 
red, glabrous, 2J-4 in. long ; peduncle short, laterally exserted from 
the spatheole (permanently?). Racemes 2-nate, pale green, erect; 
joints linear, 2-nate, rather stout, shortly cupular, with unequally 
toothed tips, hollow, about 2 lin. long, ciliate and pubescent on the 
back, cilia up to f lin. long ; pedicels similar, but shorter, 2-toothed 
at the tips. Sessile spikelet oblong, 2J-3 lin. long, including the 
shortly bearded callus. Glumes equal, the lower rather firmly char- 
taceous, scaberulous on the flat back with a narrow shallow longi- 
tudinal whitish groove, projecting as a rounded ridge on the other 
side, keels sharp, spinulously ciliolate above, intracarinal nerves 4-5 
on each side of the groove, equally distant, upper boat-shaped, 
submembranous, acute, puberulous, ciliate upwards, 3-nerved. 
Lower floret reduced to a broad oblong subacute ciliate 2-nerved 
valve 2 J lin. long. Upper floret ^ : valve oblong, 2-lobed to almost 
one-third, 1-nerved; lobes oblong, subacute, ciliolate; awn 7-8 lin. 
long, kneed at and twisted below the middle ; valvule oblong, faintly 
2- nerved, broadly truncate ; anthers 2-2-J lin. long. Pedicelled 
spikelets similar to the sessile, bat the lower glume up to 15-nerved, 
grooveless and continued into a short bristle ; valve of the upper 
floret entire and awnless and the valvule more or less reduced. 
ir Upper Guinea. Southern Nigeria : Lagos ; without precise locality,/ 1 Mac- 
Gregor , 248 ! 
Imperfectly known species. 
44. A. intumescens, Pilger in Engl. Jahrb. xlv. 208. Culms 
3- 4J ft. high, slender, very smooth, manv-noded, simple. Leaf- 
sheaths shorter than the internodes ; ligules membranous, 1J lin. 
long ; blades linear, the lower about 8 in. long, tapering to a long 
capillary point, scaberulous. Racemes at length more or less exserted, 
2-nate, one sessile, the other bare at the base, dense, cylindrical, 
reddish- violet, 4-6 in. long; joints and pedicels 2 lin. long, stoutly 
clavate, convex on the sparingly hairy back, flat on the face, hollow, 
