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PACIFIC SCIENCE, Vol. XVII, January 1963 
these 28-37 mm long, the middle and lower 
ones 5-8 mm wide, 4-6 mm thick; the upper 
and apical ones 9—12 mm wide, 7—9 mm thick, 
oblanceoloid; the body 23-32 mm long, 5-6- 
angled; pileus 4-8 mm long, the base semi- 
orbicular-pyramidal, smooth; style 3-5 mm long, 
bony, brown, shining, of the lateral and lower 
ones 2.5-4 mm wide, oblong, broadening at 
base, gently proximally curved and at apex 
bifurcate, the lobes 1-3 mm long, mostly diver- 
gent, but the terminal drupes with simple, horn- 
like style; stigmas 3-4 mm long, lanceolate on 
the lobes but united below, brown, papillose, 
proximal, running almost to the point of the 
style; endocarp centering in lower V3, bony, 
dark mahogany-colored, the walls 1 mm thick, 
the inner surface shining, the apex with a cen- 
tral, subulate prolongation; seed 1 cm long, nar- 
rowly obovoid; apical mesocarp a cavern 17 mm 
long, with fibers up the margin and a few within, 
and with traces of a medullary pith; basal meso- 
carp fibrous and fleshy. 
HOLOTYPUS: Malaya, Pahang, Sfungei] Bera, 
w. Tasek Bera, low elevation, 15 Oct. 1930, 
M. R. Henderson 24,137 (sing). 
DISCUSSION: P. serr at us is a member of the 
section Rykia , as is its closest relative, P. hetero- r 
stigma (Martelli) Martelli, a Sumatran species 
that has a raceme with 7-10 heads; syncarps 
12-15 cm long, 9-19 cm in diameter; drupes 25 
mm long, 7-8 mm wide; style spiniform, subu- 
late, or narrowly oblong and bifurcate; and the 
leaves 2 m or more in length, 10 cm wide. . 
P. serratus has the syncarp solitary, 20.5 cm long, 
11 cm in diameter; drupes 28-37 mm long, 
5-12 mm wide; style normally oblong, bifurcate 
but the apical ones stout, hornlike; and the 
leaves about 1.5 m long, 8.5 cm wide. 
As is the case with many members of the 
section Microstigma, this species has the drupes 
near the apex of the syncarp markedly longer 
and wider than those of the lower parts of the 
syncarp. 
The new epithet is the Latin adjective ser- 
ratus, saw-toothed, given in reference to the leaf 
margins. 
