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52 The Philippine Journal of Science 1914 
ISCHAEMUM CHORDATUM (Trin.) Hack. ex Warb. in Engl. Bot. Jahrb. 
13 (1891) 260. 
Spodiopogon chordatus Trin. in Mém. Acad. Petersb. VI 2 (1883) 302. 
The type was from the Marianne or Caroline Islands, and the species is 
known also from New Guinea. 
ISCHAEMUM LONGISETUM sp. nov. § Huischaemum. 
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 
f 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 
z 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 8 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 
3 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, seabrid, 1.7 to 2 em long. 
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