Ischemum. TRIANDRIA DIGYNIA. 321 
transversely rugose; hermaphrodite floret of the sessile Apwer 
awned. 
A native of newly formed pastire land in Bengal. It isa 
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 eighteen 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 con- 
siderably beyond the culm; margins slightly hispid, length 
oneand a half or two inches. Spikes two, terminal, sub-secund, 
‘an inch and a half long. Rachis jointed, scarcely flexuose, 
three-sided ; anyles hairy. Flowers in pairs, one sessile, the 
other sub-sessile, both with their base bearded. Calyces of 
both flowers almost alike, two-flowered, two-valyed ; exterior 
valvelets obliquely-lanceolate and rather obtuse, the lower 
gibbous half transversely rugose, as in J. rugosum, upper 
portions striated lengthways; margins of the lower rugose 
portion notched ; of the upper striated part ciliate ; tmner boat- 
shaped in both, one floret is male, the other hermaphrodite. 
Corol ; glumes of each floret two-valved ; the exterior valvelet 
of the aeons floret bifid, with a long arista in the 
fork. 
Obs. It onkht to be compared with [, harbatuin. 
4. 1, conjugatum, R. 
Partly creeping. Leaves short, acute, with broad cordate 
base. Spikes conjugate, seemingly united. Flowers paired, 
with the exterior valves of both calyces even, and rn on ag 
ly ; the sessile one hermaphrodite, awned. 
A native of pasture land in the vicinity of ( ale cu 
pearing in the cool season, | 
Eitei cheieienaen seikeas ¢ Ginebra, anccth, 
length from six to eighteen inches, generally purplish. Leaves 
with broad cordate base, from thence tapering toa fine point, 
‘sheaths smooth. Spikes conjugate on a slender, clavate, pur- 
01. 1. U : 
ta ,ap- 
‘ 
