319 
Hyparrkenia .] clvii. gramine^e (Stapf). 
■*“ Cymbopogon solutus, Stapf in Journ. de Bot. 2me ser. ii. 211, and 
in Cheval. Sudania, 180. 
North Central. Shari territory : between Bousso and Fort Archambault, 
Chevalier, 10490 bis ! 10507 ! Upper Oubangui River, Chevalier, 5406 ! 
^ Var. violas cens, Stapf. Spikelets slightly longer than in the type, strongly 
tinged with violet, minutely and usually scantily pubescent, the pedicelled and 
homogamous 3|-4 lin. long. 
-) Upper Guinea. Northern Nigeria : Katagum District, Dalziel, 263 ! 
^ 14. H. bagirmica A $tap/. Annual. Culms solitary or in scanty 
fascicles, erect, terete, glabrous, smooth, up to 3 ft. high, simple, 
3- noded below the panicle. Leaf-sheaths terete, the lowest usually 
very short, more or less loosely hairy or the upper glabrous ; ligules 
rounded, scarious, J-§ lin. long ; blades linear from an equally 
wide often slightly constricted base, tapering to a slender point, 
over J ft. by 2-4 lin., somewhat flaccid, with long loose scattered 
hairs in the lower part ; midrib slender, lateral primary nerves about 
3 on each side, very slender. Spatheate panicle lax, scanty, of 
4- 5 distant few-rayed tiers ; rays all or nearly all simple, the lowest 
almost 3 in., the uppermost 1J in. long, slender, filiform; lower sub- 
tending leaves with well-developed blades, the following becoming 
rapidly spatheoloid. Spatheoles narrowly lanceolate, produced 
into a very long slender acumen, 3 in. by 1J lin., scarious, reddish, 
glabrous or here and there with a long fine hair, very soon inrolled, 
and at length tightly clasping the peduncle ; peduncle slender, filiform, 
at length exceeding the sheath (sometimes by more than 1 in.), 
more or less recurved at the tips with numerous stiff spreading 
yellowish tubercle-based hairs, 2-3 lin. long, from the curvature. 
Racemes subcontiguous, rather loose, at length more or less epinasti- 
cally reflexed, 1-1 1 in. long, 6-8-awned per pair, greyish-pubescent ; 
bases more or less unequal, one very short, the other up to 1 lin. 
long, pubescent in the fork, otherwise glabrous, or with a few stiff 
yellowish hairs, both very obliquely truncate and produced into a 
subulate or lanceolate auricle ; joints and pedicels finely filiform, 
obliquely truncate, 1J-1J lin. long, shortly white-ciliate. Homoga- 
mous pair of spikelets 1 at the base of the lower raceme only. Fertile 
spikelets linear-lanceolate, 3-3 \ lin. long, greyish-pubescent ; callus 
very slender and acute, f-1 lin. long, densely and shortly bearded. 
Glumes equal, chartaceous, the lower minutely truncate, pale greyish 
or silvery pubescent all over, up to 9-nerved, nerves very faint, 
margins narrowly involute ; upper glume deltoid-acute, thinner, 
3-nerved, ciliate. Lower floret reduced to a linear-oblong truncate 
sub-2-nerved ciliate hyaline valve, 2-2J lin. long. Upper floret ^ : 
stipitiform, minutely 2-dentate, awn 1-1| in. long, column fulvo- 
pubescent. Valvule 0. Pedicelled spikelets narrowly lanceolate, 
very acute, pale reddish, 3J-4J lin. long ; lower glume subher- 
baceous, 7-9-nerved, sometimes shortly aristulate, more or less 
