Ischaamum.  TRIANDRIA DIGYNIA. ; 323 
` sectind, all the calyces two-flowered, exterior valvelets transverse- 
ly rugose ; hermaphrodite floret of the sessile lower awned. 
-A native of newly formed pasture land in Bengal. -- It is a rare 
grass, appearing about the close of the rains. $ 
Culms ramous, resting on the ground near the base, and there 
striking root at the joints; the sub-erect portion from twelve to eigh- 
teen inches, very delicate, firm; and smooth.— Leaves short, broad- 
ensiform, or rather ovate-lanceolate, with a cordate base, and one of 
. the lobes generally projecting considerably beyond the culm ; mar- 
gins slightly hispid, length one and a half or two inches.— Spikes 
two, terminal, sub-secund, an inch and a half long. Rachis jointed, 
scarcely flexuose, three-sided; angles hairy—Jowers in pairs, one 
sessile, the other sub-sessile, both with their base bearded.—Caly- 
ces of both flowers almost alike, two-flowered, two-valved ; exte 
nor valvelets obliquely-lanceolate and rather obtuse, the lower gib- 
bous half transversely rugose, as in I. rugosum, upper portions triat- 
-edlengthways ; margins of the lower rugose portion notched ; of the 
upper striated part ciliate; inner boat-shaped in both, one floret is 
male, the other hermaphrodite.— Coro/, glumes of each floret two- 
valved ; the exterior valvelet of the hermaphrodite floret bifid, with 
a long arista in the fork. - 
Obs. It ought to be compared with I. barbatum. 
4.1, conjugatam. R. : 
Partly creeping. Leaves short, acute, with broad cordate base. 
Spikes conjugate, seemingly united. Lowers paired, with the exte- 
-tior valves of both calyces even, and very woolly; the sessile one 
hermaphrodite, awned. TENE | 
—À native of pasture land in the vicinity of Calcutta, appearing in 
the cool season. 
Culms very ramous, creeping near the base, filiform, smooth, 
length from six to eighteen inches, generally purplish.— Leaves with 
broad cordate base, from thence tapering to a fine point, sheaths 
tmooth.— Spikes conjugate on a slender, clavate, purple peduncle; 
002 à 
