122 
CLVII. GKAMINEiE (Stapf). 
[Sorghum. 
shortly and finely keeled near the tip, 7-nerved. Valves shortly 
ciliate, lower ovate-lanceolate, as long as the glumes, upper ovate, 
shortly 2-lobed, 1J lin. long ; awn up to 9 lin. long, mostly with a 
short bristle, often reduced or represented by a short mucro. 
Anthers 1J lin. long. Grain obovate-oblong, 1J-1J by 1 lin. or 
slightly over 1 lin., dull brown to greyish-brown. Pedicelled spike- 
let $ or more often neuter, linear-lanceolate to linear, up to over 
2J lin. long, deciduous ; lower glume about 11-, upper 5-nerved. — 
Andropogon Sorghum , var. near Drummondii, Piper in Proc. Biol. 
Soc. Wash, xxviii. 43. 
Upper Guinea. French Guinea : Kouroussa, Pobeguin, 539 ! 
Nileland. Jur : Ghattas’ Seriba, cultivated, Schweinfurt h, 2590 ! _ 
The specimens quoted represent apparently two slightly different races, one 
with secund panicles and brown plano-convex grains with a distinct embryo- 
mark ( Pobeguin), the other with an erect, permanently contracted panicle and 
biconvex grains with an obscure embryo-mark ( Schweinfurth ). Pobeguin 
speaks of it as “ mil sauvage ” of no value. Schweinfurth says that it is 
cultivated and has the Arabic name “ burriP 
12. S. Drummondii, A Nees ex Steud. Syn. PI. Glum. i. 393. Annual. 
Culms stout, up to 6 ft. high. Leaf-sheaths finely pubescent at the 
no(Jes ; ligules very short, densely ciliate from the back ; blades 
linear to linear-lanceolate from a broad rounded base, up to 20 in. 
by (upper) 10-20 lin., pale green. Panicle oblong, erect, rather 
dense, up to over 1 ft. long ; branches suberect, more or less slender, 
flexuous, 1 or 2 from a node or subverticillate, usually branched 
from near the base or the longer undivided for 1J in., up to 4 in. 
long, like the branchlets very scabrid, ciliate towards the base. 
Bacemes tough or at least very tardily disarticulating, up to 5- 
noded and 1 in. long ; joints slender, almost 1J lin. long, ciliate, 
cilia pale fulvous, J lin. long ; pedicels very similar, somewhat 
shorter, tips like those of the joints minutely discoid. Sessile spike- 
let ovate to elliptic or broad-oblong-lanceolate, subacute to obtuse, 
2J-3 lin. by 1^-1 J lin., straw-coloured, dull greenish at the tips, 
turning more or less purplish-brown to black and very glossy when 
mature ; callus-beard J lin. long. Glumes equal, coriaceous, very 
hard when mature, lower up to 15-nerved, 2-keeled and more or 
less spinulously ciliolate in the upper third with the nerves showing- 
in the broad tip, almost glabrous, upper sharply keeled upwards 
with the keel rough. Valves distinctly ciliate, turning purple when 
ripe, lower oblong, almost 2 lin. long, upper ovate, 2-lobed to a third 
or quarter, 1J lin. long ; awn up to 6 lin. long, bristle almost at a 
right angle to the column. Anthers not much over 1 lin. long. 
Grain roundish-ellipsoid, up to 1J lin. by 1J lin., slightly flattened, 
pale olive-brown, embryo-mark very faint, exceeding the middle of 
the grain. Pedicelled spikelet $ or neuter and more or less 
reduced, subulate-lanceolate to linear, up to 3 lin. long, greenish to 
purplish-brown, deciduous ; lower glume about 8-, upper 5-nerved. 
