44 
CL VII. GKAMINEiE (Stapf). 
[ Urelytrum . 
(sometimes obscurely) spinulously muricate at the middle, rigidly 
ciliate above, usually with 1 intracarinal nerve which is more or less 
prominent towards the tips ; upper glume lanceolate, acute, firmly 
membranous, 3-nerved, side-nerves submarginal, keel rigidly ciliate 
above, margins softly ciliate. Valves about 3 lin. long, softly 
ciliate, of lower floret lanceolate, acute, of upper ovate-lanceolate, 
obtuse to subacute, mucronulate. Anthers 2-1J lin. long. Pedi- 
celled spikelets varying in hairiness like the sessile, narrow and 
usually smaller than they, with 2 £ florets, or (often in the same 
raceme) more or less reduced, sometimes to an awn representing the 
lower glume and a minute rudiment of the upper ; awn squarrose, 
flattened below, scabrid, 1J-34 in. long. — Durand & Schinz, Consp. 
FI. Afr. vi. 701 ; Stapf in Dyer, FI. Cap. vii. 330. Rottboellia hor- 
deoides (name only), Munro in Harvey, Gen. S. Afr. PI. ed. ii. 442. 
Lower Guinea. Angola : Benguella ; marshes of the valleys of the Tiengo and 
Kuito rivers, Gossweiler, 3198 ! 3777 ! 3955 ! in open Mnmma woods between 
N’jata and Dongo, Gossweiler, 3133 ! 
South Central. Rhodesia : Salisbury: Ingese, Nobhs, 670 ! 
Extending to the Transvaal, the Orange Free State and Lourenco Marques. 
Hackel (ex Henriq. in Bolet. Soc. Brot. xvii. (1900) 47) refers certain speci- 
mens collected by Quintas at Lourengo Marques to U. agropyroides, Hack., 
but that received at Kew under the name ( Quintas , 200) is U. squarosum. 
2. U. annuum, Stapf in Bull. Soc. Bot. France , lv. (1908), Mem. 
viii. 99. Annual. Culms tufted, up to 5 ft. high, slender, straight, 
terete, with flowering branches from the lower nodes, 3-5-noded, 
smooth. Leaf-sheaths glabrous, smooth, terete, tight ; ligules mem- 
branous, 14 lin. long, the sides firm, forming an acute auricle, 
decurrent along the sheath, the central portion longitudinally stri- 
ate ; blades narrowly linear, flat or convolute, tapering to a long 
setaceous point, up to 1 foot long and 1J lin. wide, glabrous, scabrid 
on both sides and particularly along the margin, often with a few 
long hairs near the base, midrib and lateral nerves rather prominent 
below and the latter also above. Racemes solitary, up to 6 in. long, 
over 14 lin. wide, dull purplish-green, erect, pubescent or glabrous ; 
joints linear, up- to 2J lin. long, slightly wider above, rounded on the 
back, slightly concave on the inner face, glabrous or pubescent, dis- 
articulating very obliquely, scar with a membranous margin, pro- 
duced into 2 or 3 unequal teeth ; pedicels similar to the joints, but 
shorter, with 2 minute or obscure teeth at the apex. Sessile spikelet 
with a short broad bearded callus, up to 3 lin. long, lanceolate- 
oblong. Glumes subequal ; lower cartilaginous, subobtuse, slightly 
convex, glabrous or pubescent upwards, finely granular, minutely 
muricate along the thickened keels and rigidly ciliolate towards the 
apex, with 1 central nerve, prominent above, and 2 close lateral 
nerves at each keel ; upper glume very slightly shorter, firmly mem- 
branous, obliquely linear-lanceolate in profile, glabrous except the 
pubescent tips, 3-nerved, keels and margins ciliate above. Lower 
