202 CLXIII. GRAMINEJ 5 . [Isch(Bmum. 
glume II very narrow lanceolate acuminate; glumes III and IV 
as long, lanceolate hyaline. Awn twice as long as glume I. 
Stamens 2, chestnut brown. Hah. River banks. Johor, Kota 
Tinggi (Ridley). 
(7) I. maculatum Stapf. MSS. 
A big grass several feet tall; culms not woody, rather slender, ’ 
nodes glabrous. Leaves rather flaccid lanceolate, long acuminate, 
base cordate, edges spinulose, 9 in. long, -5 in. wide; ligule truncate. 
Racemes 2, not spreading, 4 in. long; pedicels shorter than the 
spikelets, white-silky hairy on nodes and edges. Spikelets -2 in. 
long. Glume I rather long and narrow, oblong cartilaginous below, 
scarious above, puberuloiis, a purplish patch below the tip; glume II 
narrower, as long as glume I; glumes III and IV shorter, lanceolate 
hyaline, edges ciliate. Awn twice as long as spikelet, base brown. 
Hab. Swamps in open country. Johor, road to Castlewood ; Tehran 
River; Panchur (Ridley). 
(8) I. Feildingianum Rendle, Journ. Bot. 1894, p, loi; Hook, 
fil. F.B.I. vii. 132. 
Stems tall, robust, branched above. Leaves hairy lanceolate, 
base cordate, 3 in. long, -25 to -5 in. wide; ligule short truncate; 
sheath hairy. Racemes 2, not spreading; pedicels and glume I, 
silky hairy. Glume I lanceolate, blunt or 2-toothed, narrowly 
winged towards tip; glume II a little longer; glume III ovate- 
oblong, blunt. Awn -5 in. long. Hah. Mountains, local. Malacca, 
Padang Batu, Mount Ophir (Ridley, Feilding). 
(9) I. commelynifolium Stapf. MSS. 
A rather stiff grass over i ft. tall. Leaves stiff sub-coriaceous 
lanceolate acuminate, base broad, hairy, 3 to 4 in. long, *5 in. wide; 
ligule very short, sheaths thickly hairy. Racemes 2, appressed, 
2*75 in. long; pedicels and callus long-silky. Spikelets *18 in 
long, glabrous. Glume I stiff smooth oblong-lanceolate sub¬ 
acute thin; glumes III and IV hyaline lanceolate narrow, nearly 
as long. Awn *25 in. long. Hab. Mountains. Kedah Peak 
(Ridley, Robinson). 
(10) I. fluviatile Ridl. 
Flaccid grass with slender weak culms 2 ft. long. Leaves 
glabrous linear long acuminate, 5 in. long, -2 in. wide; petiole 
2 in. long, ligule short, oblong, glabrous. Peduncle slender, 4 in. 
long. Racemes 2, appressed, 3 in. long. Pedicels white, bearded 
on edge and at apex. Spikelets *15 in. long, i pedicelled. Glume I 
lanceolate acuminate bearded on the back with 2 pairs of low 
bosses near the base; glume II as long, lanceolate acuminate 
glabrous, thinner; glumes III and IV shorter; glume IV hyaline. 
Awn very slender, *5 in. long, upper part spirally twisted. 
Stamens 3, linear, red-brown. Hah. On rocks in the middle of 
the river. Kelantan, Kelumpur (Haniff). 
The spiral twist in the awn gives the raceme a peculiar spotted appearance. 
