Hyparrhenia.\ clvii. gramine^ (Stapf). 371 
subacuminate, often black-purple, paler downwards, including the 
callus 3J-4 lin. long ; callus f-1 lin. long, acute, very shortly bearded. 
Glumes equal, firmly chartaceous, minutely truncate ; the lower 
somewhat rounded on the back, sometimes with a very shallow 
longitudinal depression, loosely whitish-pubescent towards the base, 
very faintly 9-nerved, margins involute for more than two-thirds, 
then indexed forming distinct rigidly ciliolate keels ; upper glume 
3- nerved, reversedly ciliate. Lower floret reduced to an oblong 
obtuse faintly 2-nerved reversedly ciliate hyaline valve. Upper 
floret ^ : valve stipitiform, 2-dentate, teeth linear, up to J lin. 
long, glabrous, awn rather stout, 1J-2J in. long, brown, column ful- 
vously hirtellous ; valvule 0. Anthers 1J lin. long. Pedicelled 
spikelets linear-lanceolate, acute, 3J-4 lin. long, glabrous, olive- 
green to dark purple or slate-colour ; lower glume chartaceous, 
produced into a short bristle or mucro, about 11-nerved, nerves 
indistinct except in transmitted light, keels rigidly ciliolate from 
the middle upwards ; upper glume acute, 3-nerved, reversedly 
ciliate ; valves hyaline, ciliate, the lower oblong-obtuse, about 
3 lin. long, faintly 2-nerved, the upper spathulate, oblong, shorter, 
1-nerved ; anthers 2 lin. long. Homogamous spikelets <j, up to 5 
lin. long, often slightly curved and subasymmetric with the lower 
glume rather firm and 7-9-nerved, otherwise like the pedicelled 
member of the heterogamous pairs. — Cymbopogon rufus , Rendle in 
Journ. Linn. Soc., Bot., xl. 226 (partly), not elsewhere. 
Mozambique Distr. Northern Rhodesia : Mumbwa, Mrs . Macaulay ! Gaza* 
land : Upper Buzi River, 3000-3500 ft., Sivynnerton, 993 ! 
51. H. Gossweileri, Stapf. Perennial, densely or compactly 
csespitose, up to over 4 ft. high, with intra vaginal innovations. Culms 
firm and somewhat stout, terete, glabrous and smooth, simple and 
4- noded below the panicle. Leaf-sheaths terete with broad rounded 
shoulders, very tight, glabrous or the lowest shortly and appressedly 
hairy, the basal up to \ ft. long, inrolled, long-persistent ; ligules 
very short, scarious, ciliolate ; blades linear from a somewhat narrowed 
or slightly constricted base, tapering to a long point, up to 1 ft. long, 
1 J-3 lin. wide, flat or the upper tightly convolute when dry and then 
almost filiform, firm, rigid, glabrous, smooth except at the scabrid 
margins ; midrib slender, hardly prominent below, whitish above, 
lateral nerves numerous and prominent above, obscure below. Spathe- 
ate panicle very narrow, lax, up to over 2 ft. long, of about 4-5 
very distant tiers (the lownst internode almost 1 ft. long) ; the lowest 
1 or 2 tiers reduced to 1 or 2 compound 1-2-noded rays up to over 
1 ft. long, the following of 5-7 simple rays ; lower subtending leaves 
resembling the preceding ones, with filiform convolute blades. 
Spatheoles very narrowly lanceolate, long-acuminate, 2-3 in. long, 
1J lin. wide, scarious, reddish, glabrous, at length loosely inrolled 
