316 '^he Phili'ppine Journal of Science 1919 
perianth very low, 1.5 mm high, 4 mm broad, contracted at 
the mouth 14. P. rigida. 
f. Segments numerous, equidistant, 6 to 7 cm apart on each 
side of the rachis, ensiform, 1- or 2-costulate, straight, 
rigid, concolorous, very acuminate, bifid at the apex. 
Spadix with several, triquetrous, spirally inserted branches. 
Fruits 3-seriate in the lower part of the branches, bifarious 
near the end, small, 12 to 15 by 7 to 8 mm, ovoid-ellipsoid; 
seed ovoid, not caudiculate at the base; embryo fovea 
very oblique; vascular branches of the integument 5, 
all slightly anastomosing. Fruiting perianth low, 2 mm 
high, 4 mm broad, slightly contracted at the mouth. 
15. P. WoodiuTia. 
f. Segments numerous, equidistant, thickish and rigid, 1-cost- 
ulate, concolorous, narrow, very long-acuminate. Spadix 
with several, 3-gonous, spirally inserted branches. Fruit 
broadly ovoid, 13 by 8 to 9 mm. Seed broadly ovoid; 
embryo fovea almost horizontal; vascular branches of the 
integument 8 or 9, of which two are undivided and pass 
over the apex, and 2 or 3 on each side are arched and 
slightly anastomosing. Fruiting perianth 2 mm high, 4 
mm broad, contracted at the mouth 16. P. sclerophylla. 
e^ Segments falcate at their apices, numerous, equidistant, rigid, 
concolorous, narrow, very long-acuminate, 1- or 2-costulate. 
Spadix with several spirally inserted branches, trigonous in 
their lower part and flattened above. Fruit 3-seriate in 
the lower part of the branches, and bifarious above, rather 
narrowly ovoid-ellipsoid, narrowing a good deal to both ends, 
12 to 13 by 6 mm. Seed caudiculate at the base; embryo fovea 
slightly oblique. Fruiting perianth contracted at the mouth. 
17. P. negrosensis. 
P. Spadix large with numerous branches inserted spirally at different 
levels. Large arboreous plants. 
d\ Fruits biseriate. 
eh Segments very numerous, uniform, equidistant, ensiform, quite 
straight, rigid, very acuminate, very strongly 2-costulate, 
more or less deeply bifid at their apices, subconcolorous, very 
finely granulate-scabrid on the secondary and tertiary nerves 
on the lower surface. Fruits rather large, ovoid-ellipsoid, 
narrowing to both ends, 24 to 25 by 13 to 14 mm; pericarp 
containing several layers of capillary fibers. Seed obsoletely 
caudiculate at the base, the .embryo fovea very broad, oblique. 
Fruiting perianth 3.5 mm high, 8 mm broad, not or only 
very slightly contracted at the mouth 18. P. insignis. 
f. Fruit shorter than in the species and more ventricose, 20 to 22 
by 13 to 14 mm P. insignis var. gasterocarpa. 
f. Fruit narrower than in the species or thickly fusiform, 20 
to 22 by 8 to 9 mm P. insignis var. leptocarpa. 
f. Fruit very broadly ovoid, 20 to 22 by 13 to 15 mm. Pericarp 
with rigid fibers, rendering the surface of the fruit striate. 
Leaflets dusty-subglaucous underneath. 
P. insignis subsp. Loheriana. 
