352 
clvii. gramine^e (Stapf). [ Hyparrhenia . 
about 9-nerved, tbe 5 inner nerves raised, margins involute, sub- 
terminal keels faint, asperulous ; upper glume membranous, acute 
or subtruncate, 3-nerved, ciliate upwards. Lower floret reduced to 
an oblong truncate hyaline 2 -nerved ciliate valve. Upper floret ^ : 
valve stipitiform from a very narrow base, minutely 2-dentate, 
sparingly ciliate, awn slender, 1-lf in. long, kneed, column fulvo- 
pubescent ; valvule a subquadrate scale, § Tin. long. Grain oblong, 
subterete, If lin. long. Pedicelled spikelets narrowly lanceolate, 
acute, up to over 3 lin. long, glabrous, bright reddish ; glumes equa], 
lower subherbaceous, passing into a bristle, up to If lin. long, 
finely 11-nerved, upper acute, membranous, 3-nerved ; valves 
oblong, hyaline, ciliate, 1 -nerved, upper much narrower ; anthers 
1 lin. long. — Cy mbopogon cyanesce ns . Stapf in Journ. de Bot. 2me 
ser. ii. 209. Andropogon cyanescens , Cheval. Sudania, 35. An- 
dropogon hirtus (including var. podotrichus), Pobeguin, Ess. El. 
Guin. Eran 9 , 216 ; not of Linn. 
Upper Guinea. French Guinea : Kouroussa, Pobeguin , 508 ! 514 ! Middle 
Niger ; between Nyamina and Koulikoro, Chevalier, 2359 ! Cameroons : Upper 
Benue Basin ; Bogalo, Macleod , 93 ! 
37. H. petiolata, Stapf. Annual, about 3 ft. high. Culms erect, 
slender, terete, glabrous, simple and 4-noded below the panicle. 
Leaf-sheaths terete, smooth, glabrous, somewhat loose ; ligules 
linear-lanceolate, up to 8 lin. long, scarious, glabrous ; blades 
linear, reduced towards the base to the subterete midrib (for lf-1 in.), 
flat and sub flaccid above it, tapering to a fine point, up to 1 ft. by 
4-5 lin., glabrous, subglaucous, slightly rpugh on both sides, scabrid 
along the margins, midrib slender above the petioloid portion, 
primary lateral nerves 2-4 on each side, very slender. Spat heat e 
panicle narrow, flaccid, somewhat contracted, foliate, over 1 ft. 
long, of 5 or 6 mostly mixed upwards approaching 3-4 -rayed tiers ; 
compound rays up to 3- or 4-noded, the lowest up to over 6 in. long 
bearing secondary tiers only ; ultimate (simple) rays very slender, 
about If in. long : lower subtending leaves resembling the pre- 
ceding leaves with blades equalling the panicle. Spatheoles lanceo- 
late, acutely acuminate, cymbiform, up to 2 in. long, scarious, gla- 
brous, pale, glaucous, faintly tinged with red or purple, at length 
more or less inrolled from the margins ; peduncles very slender, 
flexuous or recurved upwards, beset with fine spreading tubercle- 
based pale hairs up to over 3 lin. long, at length slightly exceeding 
the spatheole. Racemes subcontiguous, at length more or less epi- 
nastically reflexed, about 7 lin. long, dull purplish, nodding, 2-awned 
per pair, each with 1 heterogamous pair of spikelets, bases subequal, 
not over f lin. long, pubescent in the fork, with or without a few 
spreading long hairs, the upper produced into a scarious purplish 
linear-oblong denticulate appendage, 2-2f lin. long ; pedicels filiform. 
