366 
clvii. gramineal (Stapf). [Hyparrhenia. 
green, at length turning reddish, the lower much compressed and 
keeled, the upper terete, all very narrow ; ligules scarious, truncate, 
glabrous, up to § lin. long ; blades very narrow, linear from a slightly 
attenuated base, tapering to a fine point, 4-5 in. by f to almost 
1 lin., green turning reddish or brownish, quite glabrous or with some 
very fine spreading hairs up to over 2 lin. long, particularly near the 
base, rough above and along the margins, smooth below. Spatheate 
panicle lax, secund, loose, 9 in. long, consisting of a basal branch, 
undivided below, up to 6 in. long and bearing 3 or 4 secondary tiers, 
and of about 5 upwards approximate 3-4-rayed mixed or upwards 
simple tiers ; simple rays very fine, 1J-1 in. long or the uppermost 
still shorter ; lower subtending leaves resembling the preceding ones, 
the following with much reduced blades or the uppermost spatheoloid. 
Spatheoles linear, acutely acuminate, 1J in. by J lin., subherbaceous 
and green in the lower part, scarious and reddish upwards, glabrous 
or more often very loosely hairy, particularly towards the base ; 
peduncles extremely slender, at length 1J-2 in. long, recurved or 
curled, sometimes finally straightened out, with fine spreading 
tubercle-based white hairs 2-2 J lin. long towards the tips. Racemes 
slightly spreading, finally epinastically deflexed, j- J in. long, greenish, 
2-awned per pair ; bases bearded, with the hairs like those of the 
peduncle, that of the upper raceme up to 1 lin. long, both produced 
into a linear 2-lobed purplish or brown scarious appendage about 
1 J in. long ; pedicels very finely filiform, up to 2 lin. long, shortly 
ciliate. Homogamous pair of spikelets 1 at the base of the lower 
raceme only. Fertile spikelets narrowly linear-lanceolate, acumi- 
nate, including the callus 3 lin. long, pale green or slightly tinged with 
brown or purple ; callus slender, acute, f lin. long, shortly bearded. 
Glumes equal, chartaceous ; the lower 2-mucronate with broadly 
rounded sides, 7-nerved, the middle nerve raised between 2 fine 
grooves, margins involute below the acumen, keels fine, scaberulous ; 
upper glume mucronulate, 3-nerved. Lower floret reduced to a 
narrow linear-oblong faintly 2 -nerved reversedly ciliate hyaline valve 
2 lin. long. Upper floret ^ : valve stipitiform with 2 subulate 
hyaline teeth lin. long and ciliate, awn slender, about 1-1 J in. long, 
column finely fulvously pubescent ; valvule 0. Pedicelled spikelets 
neuter, subulate, glabrous, 3 lin. long excluding the bristle of the 
lower glume (2 lin. long), and 9-nerved, keels scabrid, upper glume 
much shorter, 3-nerved ; florets suppressed or represented by a small 
very narrow ciliate hyaline valve. 
South Central. Belgian Congo : Katanga ; Tschinsenda, Rogers , 10399 ! 
48. H. subplumosa, Stapf Perennial, up to over 10 ft. high, 
with extra- and intravaginal innovations, their cataphylls glabrous. 
Culms robust, up to over 2 lin. in diam., simple and about 4-noded 
below the panicle, terete, glabrous. Leaf-sheaths terete, tight, 
firm, pale green or glaucous, the lowest up to J ft. long, glabrous and 
