Urochloa .] 
CL VII. GRAMINEJE (Stapf) . 
589 
flexure, 5-nerved, the tip slightly thickened ; valvule as long as the 
valve, oblong, acutely acuminate and acutely keeled. Upper 
floret oblong, obtuse, slightly shorter than the spikelet, pale ; 
valve and valvule crustaceous, almost smooth, the former mucronu- 
late and papillose at the tip, the latter with almost equally wide 
flaps. Anthers almost 1J lin. long. — Panicum bifalcigerum, Stapf in 
Journ. Linn. Soc., Bot., xxxvii. 531. 
Nile Land. Uganda : Unyoro ; roadsides, Daive, 826 ! British East Africa : 
without precise locality, Powell , 15 ! 
This npty be Panicum platynotum , K. Schum. in Engl. Pfl. Ost-Afr. C. 101, 
from Bukoba (Stuhlmann). U. bifalcigera is another instance of the remarkable 
splitting up of the species into a strain with glabrous and another with pubescent 
spikelets and the o^^iq^iaJ_OQcurrence of lateral fringes in the lower floret. 
2. U. trichopus* A $£up/. Annual, forming small tufts, 1-3 ft. high. 
Culms erect or ascending, moderately stout, glabrous, usually 
sheathed for the greater part or all along, simple or rarely branched, 
4-8-noded. Leaf-sheaths somewhat loose, pale, striate, quite 
glabrous to loosely and spreadingly hirsute all over with tubercle- 
based hairs, ciliate along the outer margin, silkily pubescent at the 
nodes, rarely inconspicuously bearded, with the hairs of the beard 
short and appressed ; ligules reduced to a densely ciliate rim ; blades 
linear-lanceolate to lanceolate from a broad often amplexicaul base, 
tapering to an acute point, 2J-6 in. (rarely longer) by 5-10 lin., flat, 
soft, frequently yellowish-green, glabrous with ciliate margins or 
softly hirsute all over with the hairs tubercle-based, midrib slender, 
slightly prominent below, primary lateral nerves up to 8 on each side, 
very slender. Inflorescence of 4-9 erect or sub erect often slightly 
flexuous and somewhat plump sessile or subsessile spiciform secund 
racemes ; common axis slender, 1J-3 in. long, angular, terete below, 
then semiterete or somewhat channelled or flattened high up, 
pubescent to subhirsute. Racemes very dense, 2-seriate, simple, 
from less than 1 to 2J in. long, solitary, rather evenly distributed or 
here and there subopposite ; rhachis slightly wavy, flat and green on 
the back, rarely over J lin. wide ; midrib zigzag, moderately raised, 
flanked by the stout subherbaceous scaberulous margins, villous at 
the base, glabrous upwards ; internodes about § lin. long ; pedicels 
solitary (rarely with a minute secondary pedicel at its base), reduced 
to short terete stumps with discoid tips, bearing 1-3 long spreading- 
fine hairs. Spikelets very close, imbricate, broad-ovate, subulate- 
acuminate, 2-2J lin. long, pale green or sometimes tinged with 
purple. Glumes somewhat dissimilar, membranous ; lower oblong 
with the margins slightly inrolled, truncate, lf-2 lin. long, glabrous 
except for a central tuft of 2-5 rigid tubercle-based hairs from the 
upper third, 3- (rarely sub-5-) nerved, side-nerves percurrent, trans- 
verse veins obscure ; upper glume corresponding in size and outline 
to the spikelet if not narrower, 5-nerved (rarely 7-nerved), finely 
pubescent. Lower floret : valve very similar to the upper glume, 
