664 clvii. gramineje (Stapf). [. Panicum . 
closely nerved, much more coarsely so on the underside, with the 
midrib slightly prominent towards the base, nerves indistinctly 
or not at all differentiated into primary and secondary. Panicle 
erect, narrow, open or more or less contracted, 6-8 in. long, floribund, 
divided to the fourth degree ; common axis somewhat slender, terete, 
striate, smooth, lowest internodes up to almost 1 in. long ; lower 
primary branches divided from the base, forming more or less im- 
perfect false whorls, the longest less than half the length of the 
panicle, suberect or obliquely spreading, finely filiform, striate, 
smooth or almost so, divided again usually from low down with the 
lower secondary branches up to over 1 in. long ; ultimate divisions 
capillary, upwards rather short, contracted ; pedicels unequal, 
1-3 lin. long, tips minutely discoid. Spikelets broad-elliptic, minutely 
apiculate, f-J lin. long, brownish-green, dull or here and there with 
a' metallic lustre, pubescent. Glumes membranous, about equal 
and as long as or very slightly shorter than the upper floret, very 
shortly acuminate, at least the upper, very finely and more or less 
prominently nerved, lower 3-5-nerved, upper 5-nerved. Lower 
floret : valve very similar to the upper glume, but glabrous ; 
valvule almost as long, acute with broad flaps and finely scaberulous 
keels ; anthers f lin. long. Upper floret elliptic-oblong, acute, 
§ lin. by J lin., whitish ; valve and valvule thinly papery, smooth 
except for a few very minute acute warts in the upper part ; anthers 
slightly shorter than in the floret. 
Lower Guinea. Belgian Congo : Kwango District ; Mukulu, Vanderyst , 
3185 (or 3186 ?) ! Angola : Pungo Andongo ; in damp meadows between Condo 
and Guisonde, Welwitsch, 7410 ! between Pungo Andongo and Cambambe, 
Welwitsch, 7422 ! Quibinda, Welwitsch, 7432 ! and without precise localities, 
Welwitsch, 2860 ! 2872 ! 2874 ! Huilla ; damp pastures, Welwitsch, 2671 ! 
14. P. juncifolium, Stapf. Perennial, caespitose, up to over 2 ft. 
high, with extravaginal innovations rising close to the mother culm, 
cataphylls quite glabrous. Culms erect, slender, simple, terete, 
1-noded, node faint, below the middle, glabrous and very smooth. 
Leaf-sheaths tight, firm, glabrous and smooth, striate, the bases of 
the lowest persistent ; ligule obscure, reduced to a transverse line ; 
blades j unciform, very firm and rigid, erect, tapering to an acute 
point, deeply channelled with the margins touching, J to almost 
J lin. across, or flattened out upwards and then up to over 1 lin. wide, 
rarely flat all along, the basal up to over 1 ft. long, the cauline con- 
siderably shorter, glabrous, the upper (inner) side with about 1 or 2 
very prominent primary lateral nerves on each side of the similar 
midrib, the lower side quite smooth. Panicle erect, oblong, open, 
but with the spikelets somewhat crowded along the branches, 5-8 in. 
by 1J-4 in., divided to the third or fourth degree ; common axis slender y 
terete, very smooth, lowest inter nodes 1-2 in. long ; lower primary 
branches solitary, usually divided from the base, occasionally forming 
very unequal false whorls, the longest over half the length of the 
