718 cl vn. gramineje (Stapf). [. Panicum . 
half the length of the spikelet, sub hyaline, 1- to sub-5-nerved, the 
lateral nerves short to very short; the upper as long as the 
spikelet, membranous, finely and prominently 7-9-nerved. Lower 
floret : valve very similar to the upper glume ; valvule slightly 
shorter than the valve, subacute, sharply keeled, with narrow flaps 
all along ; anthers § lin. long. Upper floret elliptic- oblong, J to 
almost 1 lin. by § lin., pale yellowish, polished ; valve and valvule 
thinly crustaceous. — P. coloratum, var. cuanzense, Rendle in Cat. Afr. 
PL Welw. ii. 178. P. Merketi, Mez in Engl. Jahrb. xxxiv. 144 
(partly ? ) . f , , ; / • '7 -> 
Lower Guinea. Angola : Pungo Andongo ; Cuanze cataract near Condo, 
Welwitsch, 2833 ! and without precise locality, Welwitsch, 7355 ! 
Mozambique Distr. Nyasaland : Zomba, 2500-3500 ft., Whyte ! Portu- 
guese East Africa : 30 miles below the Murchison Falls, Meller ! near Shupanga, 
Kirk ! below Mazzaro, in damp places, Kirk ! between Lupata and Tete, Kirk ! 
Rhodesia : Northern Melsetter, 2000-6000 ft., Swynnerton, 1702 a ! 
The type specimen is a rather weak plant as compared with the other 
specimens quoted above, but there is no structural difference. Mez’sP. Merkeri 
was described from a plant collected by Merker in the neighbourhood of Kiliman- 
jaro which I have not seen, and from Whyte’s specimen quoted above. If the 
two plants should indeed be identical, Mez’s name (1904) would have priority 
over P. Swynnertonii. 
72. P. longijubatum^ Stapf. Perennial from a very short and 
early disintegrating rhizome up to over 4 ft. high, quite glabrous. 
Culms stout, soft, sometimes spongy, erect or geniculately ascending, 
3-4- (rarely 5-) noded, rarely with a prostrate and rooting base and 
then manv-noded, mostly simple, seldom with 1 or 2 branches, terete, 
quite glabrous and smooth, intermediate and upper internodes at 
length shortly exserted. Leaf-sheaths rather loose, striate, very 
smooth ; ligule reduced to a narrow ciliolate membranous rim ; 
blades linear from a usually slightly constricted base, long-tapering 
to an acute point, up to 1 ft. by 3-8 lin., flat or involute when drying, 
smooth or more or less rough upwards, particularly on the upper 
side, margins scaberulous to scabrid upwards, midrib conspicuous 
only in broad blades and then whitish above, primary lateral nerves 
up to 8 on each side, slender, prominent. Panicle erect or slightly 
nodding, usually contracted and narrow, sometimes ultimately 
widely open and very loose, 6 to over 12 in. long, divided to the fourth 
(rarely fifth) degree, all the divisions filiform to finely filiform, angular, 
scabrid ; primary axis slender, terete, grooved and smooth below, 
angular and rough upwards ; primary branches solitary and scattered 
or irregularly approximate in pairs or occasionally in whorls, the 
longest up to three-quarters the length of the panicle or occasionally 
as long as it, spreading at maturity at an angle of mostly under 30°, 
very loosely divided from 1-2 in. above the base ; lowest secondary 
branches of large panicles 5-3 in. long, their divisions like the shorter 
secondary branches contracted (also oft maturity) with the penulti- 
mate divisions forming short 3-2-spiculate racemes, their spikelets 
