346 
PACIFIC SCIENCE, VoL XVII, July 1963 
Fig. 183- Pandanus irregularis Ridl., from holotype, leaf apex, lower side, X I- 
on a leaf section cut higher up (exact place 
unknown) the margins with spines 3-3.5 mm 
long, 25-36 mm apart, heavy subulate, ascend- 
ing; the midrib below with scars of fallen spines 
3-6 cm apart; pistillate inflorescence 30 cm 
long, with about 7 syncarps; peduncle 15 mm 
in diameter, obtusely trigonous, bracted; syn- 
carps 6. 5-7.5 cm long, subglobose, bearing 
about 36-44 drupes, these 1-3- but mostly 2- 
celled, 3-3.5 cm long, 1.8-2.4 cm wide, 1.2-1. 5 
cm thick, "dark green,” narrowly obovoid to 
oblanceoloid, compressed, the apex entire, ob- 
tuse, the sides smooth, convex, lateral sutures 
none; stigmas almost all eroded but 1 basal 
drupe bears a single stigma 5 mm long, lanceo- 
late, sharply bent to the horizontal, the recep- 
tive surface distal; endocarp 22 mm long, cen- 
tering in upper 36, at midsection filling the 
drupe, bony, massive, dark brown but including 
pale fibers, the lateral walls 4-5 mm thick; seeds 
8-9 mm long, 3 mm in diameter, ellipsoid; api- 
cal mesocarp cavernous, with strong, longitudi- 
nal fibers and soft pith; basal mesocarp fibrous 
and fleshy. 
EXPANDED DESCRIPTION OF ALL SPECIMENS 
EXAMINED: Leaf more than 1.4 m long, near 
the base 9 cm wide, near the middle 12 cm 
wide, near the apex 10.5 cm wide, broad ligu- 
late; margins near the base with thorns 3. 5-4.5 
mm long, 1-2.5 cm apart; midrib below with 
thorns 3-3.5 mm long, 2-5 cm apart, subulate, 
reflexed; at midsection the margins with spines 
4-4.5 mm long, 20-25 mm apart, sharply as- 
cending, subulate but the base much thickened; 
the midrib below concealed; the apex apparently 
damaged in growth and without a caudate apex, 
rather contracted to 2 broadly obtuse lobes and 
deeply emarginate, and even prickly on the 
margins of the cleft, all this, however, appar- 
ently an abnormality; peduncle 30 cm long; 
