. 
Andropogon. TRIANDRIA DIGYNIA. 255 
rows of pedicelled, awnless, neuter ones. Rachis jointed and 
hairy. Calyces two-valved ; exterior oblong, three-toothed, 
_ Striated, hairy ; interior acute, three-nerved, that of the neuter 
flower shorter. Corol of the hermaphrodite flower one-valv- 
ed, with a long brown awn on the opposite, or inner side, 
that of the neuter flower single, and very minute. 
4. A, binatus. Linn. sp. pl. ed. Willd. iv. 918. Retz. Obs. 
v. 24, 
Slender, towards the base creeping ; spikes paired, incurv- 
ed ; flowers paired ; the sessile ones hermaphrodite, and awn- 
ed; the pedicelled ones male, with an awnless, two-valved 
oti ; 
A native of Bengal, appears sista the cool season. 
Culms very slender, toward the base ramous, and creep- 
ing ; joints with a scanty short beard. Leaves slender, some- 
what hairy toward the base. Spikes paired, on a long fili- 
form peduncle, short-pedicelled, somewhat incurvate ; outside 
imbricated with two rows of sessile, awned, hermaphrodite 
flowers ; inside with two very distinct (for they are separat- 
ed by a deep groove) rows of pedicelled, awnless, male 
ones. Rachis jointed, and hairy. Calyces of both two- 
valved ; exterior oblong, hairy, ciliate, five to seven-nerved, 
edges thin, apex of the male tridentate, of the hermaphrodite 
obtuse. Inner valves acute, three-nerved. Corol of the 
hermaphrodite flower of one hyaline valve on the outside and 
an arista for the other; of the male one of two very unequal 
hyaline valves, ‘Styles two; stigma purple, villous. Seng 
oblong smooth, ibe. 
5. A. conjugatus. R. : | : 
Straight, very ramous, siihatiings Spikes ae both 
Aowenn:hermophroinn: ape hou arma cami of 
A native of viet and teatnallent of the genus I have 
. yet met with. Flowers during the cool season. 
