256 TRIANDRIA DIGYNIA. Andioporjon, 



Root a few very slender, brown fibres. Culms in tnf'ts, and 

 very ramous, filiform, erect, smooth, even the joints ; from six 

 to twelve inches high. Leaves minute, a few hairs near the 

 base. Spikes always exactly paired as in most species of 

 Ischcemwi, erect, Hat on the inside, where they touch each 

 Other. Rachis winding, and clothed with long, silver-colour- 

 ed hairs, length about an inch. Flowers in pairs, one sessile, 

 one pedicelled, both hermaphrodite, and both awned. Caly- 

 ces two-valved, one -flowered ; exterior valve in both lanceo- 

 late, with the margins copiously ciliate. Corol two-valved ; 

 valves transparent, and brown ; that (the inner) which gives 

 support to the arista, bifid. Stamens three. Styles two. 

 Stigmas long and plumose. 



6. A. Jiliformis. R. 



Filiform, annual, erect. Spikes paired. Flowers all ses- 

 sile, solitary; hermaphrodite, diandrous, with a corol of one 

 valve, which ends in a long awn. 



This is the most delicate species I have yet met with ; ap- 

 pears in small tufts, on pasture land near Calcutta, in the 

 months of October, November, and December. 



Culms numerous, filiform, smooth, erect, from nine to 

 twelve inches high. Leaves small, slender, and smooth. 

 Spikes two, terminal, filiform, scarcely two inches long. 

 Flowers all hermaphrodite, solitary, sessile, no pedicelled 

 flower being found, no pubescence about the calyx, or rachis. 

 Calyx two-valved, one-flowered. Corol of one large, awned 

 valve. Stamina two, one of the anthers larger. Germ ovate. 

 Styles two. 



7. A. tristac/tyos. R. 



Spikes three, both flowers hermaphrodite, and both awn- 

 ed. Calyces lanceolate, and ciliate. 



A delicate, beautiful species found on newly laid down 

 pasture ground in the vicinity of Calcutta, and in flower in 

 October, November, and December. 



