814 The Philippine Journal of Science 1919 
c’. Leaves short with very few (4 or 5), unequal, sigmoid-acinaciform, 
3- to 7-costulate segments on each side of the rachis, ashy- 
puberulous underneath, at least in newly expanded leaves. Spadix 
with 8 or 4 branches only. Fruits exactly distichous, narrowly 
ovoid, with a conical point, 15 to 16 by 6 to 7 mm. Seed caudic- 
ulate at the base; vascular branches of the integument rather 
numerous, nearly simple. 3. P. modesta. 
ec’. Leaves having on each side of the rachis 8 or 9, narrow, 2- to 
4-costulate, distant, ensiform-subfalcate, very acuminate segments, 
which aré glabrous underneath. Spadix with 5 or 6 branches. 
Fruits exactly distichous, narrow, conical-subfusiform, broadest 
below their middle, 16 to 18 by 6 mm; seed elongate, conical 
in its upper part; vascular branches of the integument very few 
(3 or 4), almost simple 4. P. isabelensis. 
b?. Fruits 3-seriate. Leaves having on each side of the rachis 7 or 8 
very inequidistant, unequal, 1- to 4-costulate, narrowly falcate- 
sigmoid, long-acuminate segments, which are glabrous underneath. 
Spadix with few (5) triquetrous branches. Fruit small, 11 to 12 
by 5 to 5.5 mm, narrowly ovoid-ellipsoid, acute, equally narrowed 
to both ends. Seed ovoid, with a conical point; vascular branches 
of the integument 8 or 9, slightly anastomosing.. 5. P. heterophylla. 
a*, Leaves with more numerous segments. : 
b*. Segments ashy-puberulous underneath; plants of moderate size. 
ec’. Fruits 3-seriate. Segments relatively not very numerous, very 
unequal, inequidistant, 3- to 7-costulate, deeply incised into 3 to 7 
bifid laciniae, the latter falcate, acuminate. Spadix with few 
(5 or 6) branches. Fruits relatively large, ovoid-ellipsoid, 2.5 to 
3.3 cm long. Fruiting perianth low, cupular, not contracted at 
the mouth. Stem 3 to 5 em in diameter.................... 6. P. Barnesii. 
ce. Fruits 2-seriate. 
d@’. Segments rather numerous, very unequal, 1-pluricostulate, sig- 
moidal; when with more than one midcosta then deeply cleft at 
the apex into falcate-acuminate points. Spadix with the upper 
branches spirally scattered. Fruit obovoid, 18 to 20 by 13 mm. 
Seed spherical, with a horizontal embryo fovea. Fruiting 
perianth very shallowly cupular or almost explanate. 
7. P. Copelandii. 
@. Segments numerous, 2- or 3-costulate, almost straight, not deeply 
incised at the apex, the divisions 2-toothed, the teeth acute. 
Fruit ovoid-ellipsoid, obtuse, small, 15 by 9 mm. Seed with a 
very oblique embryo fovea. Fruiting perianth shallowly cup- 
ular, with nearly vertical walls, not contracted at the mouth. 
8. P. Curranii. 
b*. Segments glabrous underneath. 
c’. Spadix with rather few branches. 
@. Fruits distichous. Small or medium-sized plants. 
e*, Stem 2 to 5 cm in diameter. Leaf-sheaths densely covered with 
a grayish tomentum. Segments rather numerous, slightly 
sigmoid, acuminate, usually 3-costulate and relatively broad, 
or else narrow and 1-costulate. Spadix with few, scattered 
