Ischoemum. triandria digynia. • 325 



valve of the sessile flower truncate, the rest cuspidate^ hermaphro- 

 dite flower alone awBcd. 



A weak straggling species. 



Culms weak, creeping and ramous towards the base ; towards 

 the heads erect ; the thickness of a pigeon's quill ; joints bearded. 

 Leaves a little hairy near the base, mouths of the sheaths ligulate, 

 and hairy. — Spikes paired, &.c. as in the last species. — Fiuzcers pair- 

 ed, &.C. Cfl/j/.r of the sessile flowers two-valved, two-flowered; exte- 

 rior \d\\e retuse and bordered; inner \d\\Q ending in an awled point. — • 

 Flowers two, one hermaphrodite with a two-valved corol, the exte- 

 rior of which ends in an arista, the other is male with an awnless 

 two-valved corol, — Calyx, of the pedicelled flower both valves alike, 

 and ending in an awled point ; it contains a single flower, which is 

 sometimes hermaphrodite, and sometimes male, with the rudiment 

 only of the second flower. 



7. I. re pens. R. 



Creeping. Leaves short and acute. Spikes paired. Flowers all 

 polygamous and awnless; glumes of the calyces smooth and cuspi- 

 date. Rachis smooth. 



A native of Pulo-penang. 



Culms creeping, flexuose, smooth, from one to two feet long. — 

 Leaves bifarious, sword-shaped, short, rigid. Sheaths as long as 

 the joints, a little hairy, with a stipulary process at the mouth. — 

 Spikes terminal, paired, uniting a little above what seems to be 

 their base. Rachis jointed, three-sided, smooth. — Flozcers about six 

 pair, one of each pair sessile, the other peduncled, both the pedicel- 

 led and sessile one consisting of a two-flowered, two-valved, rigid, 

 acute, smooth calyx. — Flozcers polygamous, one hermaphrodite, the 

 other male, both awnless, each floret having a corol of two acute 

 valves. 



8. 1. cuspidafum- K. 



Floating on sweet water with a portion of the tops of the plant 



