676 
CLVII. GRAMINEiE (Stapf). 
[Panicum. 
acuminate, equalling the spikelet, broad-lanceolate in profile and 
very concave, 5-nerved. Lower floret : valve very similar to the 
upper glume, but always glabrous ; valvule slightly shorter ; anthers 
| lin. long. Upper floret elliptic in outline, obtuse, almost J lin. 
by J lin. ; valve and valvule thinly papery, obscurely verruculose 
or asperulous. 
Upper Guinea. French Guinea : Fouta Jallon, between Memon and 
Trebeleyia, Chevalier, 8622 bis ! — 
V, l-j 
29. P. Hanningtonii, Stapf. Base unknown. Culms terete, 
strongly striate, finely hirsute below the panicle, very sparingly so 
below the uppermost leaf, hairs very fine, 1J lin. long, spreading, 
springing from minute tubercles. Leaf-sheaths (uppermost leaves) 
somewhat tight, 3-3 J in. long, subherbaceous, finely and closely 
striate, hirsute, hairs like those of the culms, but slightly coarser ; 
ligule reduced to a narrow ciliate rim ; blades linear from a slightly 
rounded semi-amplexicaul base, long-tapering to an acute point, 
up to 1 ft. by 3J-4J lin., equalling or exceeding the panicle, flat, 
green or tinged with purple, ciliate near the base, otherwise very 
loosely and finely hairy (hairs long) or glabrous upwards, margins 
scabrid, midrib and primary lateral nerves slender, the latter quite 
distinct, about 4 on each side. Panicle oblong, 9-10 in. by up to 
4 in., somewhat contracted (always ?), divided to the fourth or fifth 
degree ; common axis and primary branches loosely and finely 
hirsute towards the base, otherwise glabrous and scabrid along the 
slender ribs or angles like the finely filiform and often purplish 
divisions of a higher order ; primary branches 2-3-nate or pseudo- 
verticillate, the lowest pairs of fascicles distant, the following 
gradually more approximate or congested towards the top, their 
members unequal, the longest up to over 6 in. long, suberect with 
their tops often curving outwards, divided from low down, their 
divisions mostly more or less secund and dividing in a similar manner, 
forming very slender and loose downwards compound or simple 
racemes ; pedicels usually longer than the spikelets, if paired often 
very unequal, up to over 2 lin. long, tips slightly thickened, pale. 
Spikelets oblong, mucronate- or rostrate-acuminate, excluding the 
mucro about 1 lin. long, green tinged with purple to almost entirely 
dull purple. Glumes unequal ; lower subhyaline, ovate, acute or 
acuminate, with or without a minute mucro, clasping, appressed 
except the tip, about half the length of the spikelet, 1 -nerved or 
with a short faint rudimentary side-nerve on each side ; upper 
obliquely oblong in profile, finely rostrate- or subulate-acuminate, 
generally ending with a minute mucro as long as the spikelet, promi- 
nently 7-nerved. Lower floret : valve similar to the upper 
but shorter, broader, hardly acuminate and whitish- or yellowish- 
green, often vividly contrasting with the dark purple glumes, 
9-nerved ; valvule subequal to the valve, acute with downwards 
