VetivenaJ] 
CLVII. GRAMINE^E (Stapf). 
159 
oblong, subacute, reversedly ciliate, 2-nerved ; of upper floret some- 
what shorter, sublinear in profile, 2-dentate, eciliate, 1-nerved, 
awned ; awn slender, up to 10 lin. long, column chestnut-brown, 
not twisted, scabrid, bristle shorter than the column, very pale, 
flexuous. Valvule linear, glabrous, up to almost 1 lin. long. Anthers 
If lin. long. Grain oblong with an obliquely rounded off top, over 
1J lin. long. Pedicelled spikelet linear-lanceolate, pale or livid- 
purplish, about as long as the sessile. Glumes membranous ; lower 
acutely acuminate, smooth or almost so, finely 7-8-nerved, frequently 
terminating with a short bristle ; upper 3-nerved, reversedly ciliate. 
Valves, of both florets narrowly oblong, acute, reversedly ciliate, 
that of the lower 2-, of the upper 3-nerved. Valvule ciliolate, other- 
wise as in the sessile spikelets. — Andropogon fulviharbis , Trin. in 
Mem. Acad. Petersb. 6me ser. ii. 287 ; Hack, in DC. Monogr. Phan, 
vi. 544. A. verticillatus , Schumach. in Schumach. & Thonn. Beskr. 
Guin. PL 50, not of Boxb. 
Upper Guinea. French Sudan : San, Chevalier, 2340 ! 2342 ! Gold Coast : 
Christianborg, Johnson, 1027 ! Accra, Vogel ! Ashanti ; banks of the Black 
Volta at Bjury, Chipp, 507 ! 
31. CHRYS0P0G0N, Trin. Fund. Agrost. 187. 
Spikelets in threes at the ends of the branchlets of terminal panicles, 
one sessile the other 2 pedicelled, the trio falling entire from the 
thickened, nearly always bearded, oblique tips of the peduncles ; 
exceptionally 2-nate in 2-jointed racemes, one sessile the other 
pedicelled, each sessile spikelet falling with the contiguous joint and 
its pedicelled companion, pedicels (and joints, where any) linear- 
filiform, never longitudinally grooved nor appendaged. Florets 2, 
lower reduced to an empty valve, upper $ in the sessile, $ or neuter 
in the pedicelled spikelet. Sessile spikelets usually laterally com- 
pressed, awned. Glumes subequal ; lower coriaceous or charta- 
ceous, involute with a rounded back or complicate and more or less 
keeled upwards, upper boat-shaped, more or less keeled. Valves 
hyaline, of lower floret 2-nerved, of upper linear, entire or 2-dentate 
with a usually perfect awn from the sinus. Valvule 0 or small, 
hyaline, nerveless. Lodicules 2, small, glabrous. Stamens 3. 
Stigmas exserted laterally low down. Grain linear, laterally com- 
pressed ; embryo half the length of the grain ; scutellum linear- 
oblong. Pedicelled spikelet dorsally compressed, awnless or aristu- 
late. — Mostly perennial (all the Old World species). Leaf-blades 
narrow. Panicles usually lax, of whorls of simple or basally divided 
filiform branches, rarely the branches 2-nate or solitary. 
Species about 18, in the hot parts of the Old World, a few extending into the 
temperate zones ; 1 in Florida and Cuba. 
Lower leaf-sheaths compressed, subflabellately imbri- [tremulus. 
cate 1. C. montanus, var. 
Lower leaf-sheaths terete, not flabellate 2. C. Aucheri, var. 
quinqueplumis . 
A 
