52 The Philippine Journal of Science iai4 
ISCHAEM UM CHORDATUM (Trin.) Hack, ex Warb. in Engl. Bot. Jahrb. 
13 (1891) 260. 
Spodiopogon chordatus Trin. in Mem. Acad. Petersb. VI 2 (1833) 302. 
The type was from the Marianne or Caroline Islands, and the species is 
known also from New Guinea. 
ISCHAEMUM LONGISETUM sp. nov. § Euischaemum. 
Culmis caespitosis, circiter 50 cm alt., glabris; foliis glabris, 
lanceolatis, usque ad 12 mm latis; racemis binis, 6 ad 10 cm 
longis, crassis, articulis pedicellisque 3-angulatis, dense longe 
fulvo-villosis, glumis omnibus laevis, spiculis pedicellatis magnis, 
longe aristatis; spiculis sessilibus 7 mm longis, arista 3 ad 3.5 
cm longa. 
A tufted perennial grass, nearly glabrous, except the inflor- 
escence, about 50 cm high, the culm simple, terete, 1.5 mm in 
diameter or less, the sheaths rather lax, overlapping, sometimes 
sparingly ciliate-pilose at their apices; ligule truncate, about 1 
mm long; leaf -blades chartaceous, smooth, glabrous, narrowly 
lanceolate, 8 to 12 cm long, 7 to 12 mm wide, sharply acuminate, 
base gradually narrowed, sessile or subsessile, each culm with 3 
or 4 leaves, the upper gradually shorter, the uppermost sheath 
usually leafless. Spikes 2, stout, 6 to 10 cm long, long-exserted, 
the rachis, /rachillas, and pedicels of the sessile spikelets densely 
fulvous-villous with long, rather stiff hairs. Joints of the rachis 
and the pedicels of the spikelets distinctly 3-angled, 3 to 4 mm 
long, the angles all ciliate-villous, the hairs 2 to 4 mm long. 
Sessile spikelet lanceolate, about 7 mm long, with a very long 
awn. First glume coriaceous, glabrous, smooth, shining, lan- 
ceolate, about 7 mm long, 2 mm wide, margins in the lower one- 
half prominently inflexed, the upper one-half on the back obscure- 
ly 5- or 6-nerved, here also manifestly laterally 2-winged, or 
keeled, the wings or keels narrow, ciliate-hispid, acuminate, the 
acumen minutely divided. Second and third glumes similar to 
the first in texture, enclosed by it, the second up to 9 mm long, 
long and slenderly acuminate, the third shorter. Fourth glume 
hyaline, its awn 3 to 3.5 cm long, stout, scabrid, twisted, some- 
what geniculate. Pedicellate spikelets with pedicels about as 
long as the joints of the rachis, somewhat thickened upward, 
3-angled, the angles villous; callus stout, villous, nearly 1 mm 
long. First glume coriaceous, glabrous, smooth, shining, oblong- 
lanceolate, acuminate, about 6 mm long, obscurely 5- or 6-nerved 
in the upper part, distinctly laterally keeled. Second and third 
glumes similar to the first in texture, about as long but much 
narrower. Fourth glume hyaline, its awn slender, twisted, 
nearly straight, scabrid, 1.7 to 2 cm long. 
