403 
Trachypogon .] clvii. gramine^] (Stapf). 
along the very oblique shortly bearded disarticulation marks, inter- 
nodes about 2 lin. long ; longer pedicels slender, up to 1 \ lin. long, 
glabrous or nearly so, tips very oblique. Subsessile spikelets 
the lower broad-oblong and dorsally flattened, the upper narrower 
upwards and more convolute. 3 lin. long, glabrous, brownish. Glumes 
subequal ; lower coriaceous, truncate, keels winged from the middle 
upwards, wings firm, reddish, up to J lin. wide, scaberulous, intra- 
carinal nerves 7, obscure except in transmitted light, with some 
transverse veins ; upper glume slightly longer, linear; subacute, 
thinner, 3-nerved, ciliolate near the tips. Lower floret reduced to 
an oblong broadly truncate sub-2-nerved upwards ciliate valve, 
2J lin. long. Upper floret as long as the lower : valve lanceolate- 
oblong, narrowly truncate, obscurely mucronulate, 3-nerved, cilio- 
late near the tips. Anthers 2J lin. long. Fertile spikelets linear, 
up to over 6 lin. long, including the pungent densely silvery -bearded 
callus, which is about 1\ lin. long. Glumes subequal : lower con- 
volute, wingless, subcoriaceous, obtuse, glabrous or loosely hairy, 
9- nerved, nerves very obscure except in transmitted light, upper 
slightly longer, linear, subobtuse, strongly 3-nerved, eciliolate. 
Lower floret reduced to an oblong truncate hyaline ciliate 2-nerved 
valve. Upper floret ^ : valve narrowly linear, hyaline and 3- 
nerved below, cartilaginous above passing into a slender flexuous 
silvery-grey awn, 3J-4 in. long, obscurely kneed, tightly twisted 
below, all the awns intertwisted on one side of the raceme, plumose 
with soft hairs up to over 1 lin. long, bristle with very short upwards 
decreasing hairs or merely hispidulous upwards. — T. poly mor pirns, 
var. ThoUonii, Franch. in Bull. Soc. Hist. Nat. Autun, viii. 14 (of 
reprint), partly. T. Gouini , Bureau in Compt. Bend. Acad. Paris, 
c. iii. (1886) ; not of Fourn. 
Lower Guinea. French Gaboon : M’pila plains near Brazzaville, Thollon, 
92 ! 374 ! 393 ! 
3. T. plumosus, Nees, Agrost. Bras. 344. Perennial, compactly 
csespitose. Culms surrounded at the base by the firm persistent 
leaf-sheaths, up to over 4 ft. high, terete, glabrous, 4-5-noded, 
bearded below the nodes. Leaf-sheaths firm, terete, tight, the lower 
longer, the middle and upper much shorter than the internodes, 
glabrous or rarely (in the African specimens) sparingly hairy ; 
ligules firmly scarious, from less than 1 lin. to up to over 2 lin. or 
occasionally over 1 in. long ; blades narrow-linear, tapering to a long 
fine point, usually convolute-j unciform or more or less flat, up to 
1 ft. long and §-2 lin. wide, glabrous or hirsute at the base, midrib 
and the few primary lateral nerves rather prominent below. Ba- 
cemes solitary or 2-5-nate, 3-9 in. long, stiff or somewhat flexuous ; 
rhachis subterete, glabrous except along the very oblique shortly 
bearded disarticulation marks, internodes about 2-2 J lin. long ; longer 
pedicels very slender, up to 1 lin. long, glabrous or very sparingly 
