Jardinea.\ 
CLVII. GRAMINE^E (Stapf). 
51 
spike-like racemes, those of each pair heterogamous, very similar 
in shape, but the pedicelled usually smaller or quite rudimentary, 
the sessile deciduous with the adjacent joint and pedicel ; joints 
and pedicels parallel, posticously contiguous or almost so ; articu- 
lation at a right angle to the rhachis, tips hollowed out, not appen- 
daged. Sessile spikelet : Elorets 2, lower barren, upper g , awnless. 
Glumes subequal, chartaceous ; lower flat on the back, muricate 
or spinulous at least along the sides, 2-keeled, narrowly indexed 
along the margins, mucronate ; upper boat-shaped, keeled. Valves 
hyaline, awnless, lower usually 2-, upper 3-nerved. Valvules similar 
to the valves, 2-nerved or much reduced or quite suppressed. Lodi- 
cules 2, cuneate. Stamens 3. Stigmas laterally exserted. Grain 
oblong, dorsally slightly compressed.— Tall, coarse grasses ; blades, 
long and flat ; ligules very short, membranous ; racemes long„ 
slender, more or less distinctly dorsiventral, the lower glume of the 
sessile spikelets much spreading during flowering. 
Species 3, endemic. 
Racemes very rigid, fragile, 6—12, opposite or scattered; 
pedicelled spikelets reduced to a small glume or 
quite suppressed ... ... ... ... ... 1. J. gabonensis. 
Racemes slender, usually flexuous ; pedicelled spike- 
lets like the sessile, though smaller and sometimes 
slightly reduced. 
Racemes 5-9, the lowest solitary, the following 
paired ... 2. J. angolensis. 
Racemes very numerous, verticillate or semi-verti- 
cillate, rather tough ... ... ... . . . 3. J. congoensis. 
1. J. gabonensis, Steud. in Flora , 1850, 229 (name ) ; Syn. PI. Glum. 
i. 360. Perennial, tufted, up to 8 ft. high. Culms erect, terete, 
very smooth and glabrous, simple or with leafy shoots from' some of 
the upper sheaths. Leaf-sheaths firm, striate, smooth, glabrous or 
sparingly and softly hairy, the lower much compressed and long per- 
sistent ; ligules membranous, very short, truncate, ciliolate with long 
hairs from the back ; blades linear, long-tapering to a fine point, at 
the base gradually passing into the sheath, up to over 1 ft. long and 
to over 4 lin. wide, rigid, flat, glabrous except towards the base where 
they are usually more or less covered with long silky hairs on the 
upper face, smooth except the very rough margin, midrib moderately 
stout, lateral nerves numerous, faintly raised. Kacemes frequently 
over a dozen, simple or the lowest compound (2 or 3 on a common 
peduncle), opposite or scattered on the common rhachis, rigid, 
fragile, suberect, up to over 6 in. long, greenish-yellow ; common 
rhachis up to 4 in. long, lowest internode up to more than 1 in., the 
following 6-4 lin. long, angular, with or without beards at the nodes ; 
peduncles of the lowest racemes up to 1 in. long, of the upper very 
much shorter ; joints linear, subclavate and hollow above, 3-4 lin. 
long, rounded on the back, slightly concave on the inner face, scabrid 
