Panicum .] clvii. gramineje (Stapf). 738 
near Chinchoxo, Soyaux , 146 ! Jardin ! Landana, Phillips ! French Congo : 
Brazzaville, Brazza & Thollon, 379 ! N’Goma valley, Lecomte ! Belgian 
Congo : Lower Congo, Smith ! Cobra ! Boma Distr. ; Shinganga, j Dewevre, 
319. Cataracts Distr. ; Tombe (Lutete), Hens, A. 270 ! Kitobola, 
Laurent ; between Tombe and Kitobola, in shady places, Vanderyst, 4426 ! 
Stanley Pool Distr. ; Dolo, Schlechter, 12496 ! M’suata, Buttner, 557. Kisantu, 
Gillet, 254, 726. Kunzulu, Vanderyst, 5191 ! Equator Distr. ; Eala ( collector ?) ; 
Kasai Distr., Luja ! Angola : Golungo Alto ; in very shady woods by the 
Cuango river, Welwitsch, 2982 ! Queta Mountains and along the Delamboa 
river, Welwitsch, 7223 ! Banza do Bongo ; Aquitamba, Welwitsch, 7299 ! and 
without precise locality, Welwitsch, 2968 ! 
Mozambique Distr. Zanzibar, Boivin ! 
Also throughout tropical Asia. 
88. P. heterostachyum, Hack, in Oest. Bot. Zeitschr. 1901, 430. 
Annual, 1-1J ft. high. Culms subfiliform, erect or more often 
geniculately ascending, simple or branched (sometimes subdichoto- 
mously) above the base, 4-5-noded, terete, smooth, glabrous, the 
lower bared by the thrusting aside or falling off of the sheaths, 
Leaf-sheaths at first tight, but soon loosened, except the upper, 
thinly subherbaceous, finely prominently striate, loosely ciliate. 
otherwise glabrous or softly and loosely pubescent ; ligule an 
obscure hyaline almost sparsely ciliate rim ; blades lanceolate-ovate 
from a broadly rounded or cordate and tightly constricted base, 
acutely acuminate, 1 in. by 4 lin., spreading or flaccid, flat, thin, 
green, long-ciliate at the rounded base, shortly ciliate upwards, 
almost glabrous, margins scaberulous upwards, midrib very fine, 
all the lateral nerves alike, rarely some primary nerves (3-4 on 
each side) differentiated, cross-veins very inconspicuous. Panicles 
exserted (at least the terminal), ovate-rotundate in outline, rigidly 
open and very loose, 1 J-3 in. and almost as wide, divaricately divided 
up to the third degree ; axis filiform, terete, beset with fine usually 
tubercle-based spreading hairs, otherwise like all its divisions smooth 
or almost so and slightly viscous, internodes 2-3 lin. long, here and 
there with a shorter one thrown in ; primary branches subhori- 
zontally spreading, loosely divided from 1 J-2 lin. above the base, sub- 
capillary ; secondary branchlets capillary, the lower bearing up to 
3 widely scattered spikelets ; pedicels 1-14 lin. long, with obscurely 
thickened tips. Spikelets gibbously ovate in profile when young, 
less so when mature and then with a broadly rounded back, 1 lin. 
long, bright green. Glumes thinly membranous, glabrous or loosely 
and very shortly or very long hairy all over, equally long, the lower 
much thinner, concave at first, then almost flat, lanceolate, acute, 
3-nerved ; upper broad-oblong and shortly acuminate in outline, 
very concave, gibbous below, 5-nerved. Lower floret barren : 
valve oblong, acute, as long as the glumes, but less concave and not 
gibbous, 5-nerved, hairs submarginal only, or none ; valvule oblong, 
acute, slightly shorter than the valve, keels scaberulous. Upper 
floret broad-oblong, subacute, very convex on the Tounded back, 
slightly over J lin. long : valve and valvule papery, pale, slightly 
