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- val v- 

 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. pi. 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 

 corol. 



A native of Bengal, appears during 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. Seed 

 oblong, smooth. 



5. A. conjugatus. R. 



Straight, very ramous, filiform. Spikes conjugate, both 

 flowers hermaphrodite, and both awned ; exterior valves of 

 the calyces lanceolar, and copiously ciliate. 



A native of Bengal, and the smallest of the genus I have 

 yet met with. Flowers during the cool season. 



