Pollinia.] 
CLXin. GRAMINEiE. 
199 
(3) P. rupestris Ridl. Journ. Roy. As. Soc. S. Br. 44 > P- 208, 
^^^^Perennki, several feet tall, nodes ciliate. Leaves acuminate, 
>7 to 8 in lonf? -5 in. wide, narrow at the base, glabrous above, 
hairy beneath,'mouth of sheath hairy. Racemes several, erect, 
4 in long, stout, fragile. Callus not ciliate. Glume I ovate- 
lanceolate, boat-shaped, mucronate, keel ciliate; glume II similar 
with strong bristles, reddish; glume III hyaline oblong. Palea 
narrower pubescent; glume IV ^Gth a long awn from between two 
linear acuminate points. Hab. Rare on rocks by the river m 
exposed spots. Johor at Batii Pahat (Ridley). 
12 . ISCHiEMUM, Linn. 
Annual or perennial grass. Spikes in pairs, or fascicled, inter- 
nodes of rachis thick, trigonous ventrally hollowed. Spikelets in 
pairs I sessile, i pedicelled. the latter often different from 
sessile spikelet. Glumes 4. Glume I chartaceous or stiffly 
coriaceous ovoid oblong or lanceolate, awnless, sides incurved, 
more or less winged on each side; glume II as long, lanceolate, 
sometimes awned; glume III nearly as long membranous palea 
narrower, 2-veined, stiff with broad mflexed A^ps, glume I 
deeply 2-cleft, awned, base of awn twisted. Pedicelled spikelet 
similar or not. Glume I semi-ovate, flat, broad-jvinged; glume IV 
oblong blunt or very shortly bifid, awnless. Species 50. South 
Europe, Asia, tropics and sub-tropics, Australia and Africa, rare 
in America. 
Usually tall erect grasses; spikelets and pedicels 
glabrous; glume I stiff coriaceous. 
Glume I oblong wnnged, stiff transversely 
rugose. 
W^eak plant: racemes slender, 3 in. long 
Medium plant, stout; racemes 4 in. long; 
glume I smooth or slightly rugose on 
cd^cs ,*••*'* 
stout grass; racemes 4 to 7 in. long, thick; 
glume I with 3 or 4 strong transverse 
ridges . ■ • • • • 
Stout grass; racemes 4 in. long; glume i 
quite smooth . . • • • 
Long creeping ascending grass; raceme coppery, 
I in. long. . 
Glumes smooth; pedicels minutely ciliate on 
edges only; awn very short ... 
Tall swampy or mountain grasse^s; pedicels long 
silkj'^; glume I thinly cartilaginous. 
Leaves long flaccid, glabrous. 
Leaf base narrowed .... 
Leaf base cordate . . . • - 
Leaves hairy, base cordate . . - ■ 
Leaves short stiff hairy, 3 in. long 
(1) I. rugosum 
(2) I. imbricatum 
{3) 1. magnum 
(4) I. Iseve 
(5) I. muticum 
(6) I. plumulosum 
(7) I. maculatum 
(8) I. Feildingianum 
(9) I. commelynifolium 
