CLVli. GKAMINEJE 
529 
Brachiaria .] 
subacute, more or less convex on the back, 2 lin. long, pale greyish- 
green, hairy. Glumes very unequal, membranous ; lower broad- 
ovate, broadly clasping, obtuse and subemarginate to acute, one- 
third to half the length of the spikelet, finely 9-nerved ; upper 
corresponding in outline and size to the spikelet, very convex, 7- 
nerved, silkily hairy particularly upwards. Lower floret as long 
as the spikelet : valve very similar to the upper glume but 5-nerved, 
less or hardly convex and less hairy ; valvule oblong, subobtuse, 
with narrow flaps and very fine keels, almost as long as the valve ; 
anther 1J lin. long. Upper floret almost as long as the spikelet, 
broad-oblong ; valve minutely apiculate, like the valvule crustaceous, 
whitish and almost quite smooth. 
Nile Land. Uganda : Karagwe, Speke & Grant , 488 ! M’punra, 4000 ft., 
Dammer, 1070 ! 
20. B. rugulosa, Stapf. Perennial, up to 1J ft. high. Culms 
slender, ascending from a decumbent base, 5-6-noded, with short 
leafy branches from the lower nodes, compressed or angular, glabrous 
except below the inflorescence. Leaf-sheaths rather loose, at least 
in the lower part and there frequently slipping off the stem, sparingly 
hairy or glabrous, but ciliate along the margin, striate ; ligules a 
ciliolate rim ; blades narrowly linear from an equally wide base, 
tapering to a somewhat callous fine point, 3-4 in. by 1-1 J lin., flat 
or more or less involute, rigid, glabrous and smooth, nerves very 
fine, midrib very slender. Inflorescence secund, 3-1 in. long, upright, 
of 4-6 oblique distant secund spiciform spikes ; common axis con- 
tinued beyond the uppermost raceme into a fine subulate point, 
up to 3 lin. long, semiterete, channelled adaxillarily, scaberulous 
along the angles and usually ciliate or ciliolate above the nodes. 
Racemes dense, 2-seriate, 1-f in. long, simple, sessile or subsessile, 
rarely shortly peduncled with some arrested spikelets at the base ; 
rhachis flat, straight or almost so, up to J lin. wide, with a very fine 
zig-zag rib on the face, angles shortly ciliate, base finely tomentose, 
internodes f lin. long ; pedicels solitary, extremely short with some 
fine hairs from below the subdiscoid tips. Spikelets closely contigu- 
ous, oblong, subacute, moderately convex on the back, 1J lin. long, 
glabrous, pale green variegated with dull purple. Glumes very un- 
equal ; the lower membranous, broad-ovate, obtuse, 5- to sub-7-nerved, 
nerves not anastomosing ; upper glume corresponding in outline 
and size to the spikelet, more firmly membranous, 5-nerved with or 
without some obscure cross-veins. Lower floret as long as the 
spikelet ; valve very similar to the upper glume, slightly flattened 
or depressed on the back ; valvule oblong, acute, almost as long as 
the valve ; anthers 1 lin. long. Upper floret ^>, very slightly shorter 
than the spikelet, oblong, subobtuse, whitish ; valve and valvule 
crustaceous, closely and finely but very distinctly transversely rugose. 
Nile Land. British East Africa: Nairobi, 5450 ft., Lyve, 154! Dowson, 
257 partly ! 
FL. TROP. APR. VOL. IX. — PI. 3. 2 M 
