98 
subglobose; drupes 6-7 mm long; style proxi- 
mally bent at right angles; and the leaves 63-89 
cm long, 7-8 mm wide, and the marginal ser- 
rations pale. 
The new epithet is the Latin adjective pumi- 
lus, small, and is given in reference to the tiny 
syncarps and drupes. 
SECTION Microstigma 
Pandanus trigonus sp. nov. (sect. Micro stigma ) 
Fig. 207 
DIAGNOSIS HOLOTYPI: Foliis 2.5 m longis 11 
cm latis crassiter coriaceis 1-sulcatis 2-plicatis 
in sectione mediali cum 55 nervis secundariis 
parallelis inconspicuis in quoque latere, nervis 
tertiis obliquis et reticulis breviter rhombicis 
formantibus, laminis ligulatis longe in apice 35 
cm longo subulato trigono diminuentibus eo 10 
cm ex apice 3.5 mm lato, proxima basem mar- 
ginibus cum spinis 2. 5-3. 5 mm longis 4-10 
mm separatis crassiter arcuato-deltoideis adscen- 
dentibus pallidis, midnervo infra cum spinis 2-3 
mm longis 10-20 mm separatis simulantibus 
infimis reflexis alteris adscendentibus in sectione 
mediali marginibus cum spinis 2-2.2 mm longis 
8-17 mm separatis deltoideis compressis salien- 
tibus apicibus rubris, midnervo infra cum serris 
1.5 mm longis 9-20 mm separatis, in apice 
subulato marginibus et midnervo infra cum 
serris 1—1.5 mm longis 6-15 mm separatis 
crassis, pedunculo foemineo 2 cm diametro 
trigono, syncarpio licet solitario 26 cm longo 
4.5 cm diametro subcylindrico sed parve supra 
diminuentibus et proxima apicem 3 cm diametro 
3-laterato cum circa 1,776 drupis, eis 9-10 mm 
longis 1.7-2. 5 mm latis et crassis distinctis 
anguste oblanceo-ellipsoideis parte Vd supera 
libera, corpore 7-8 mm longo anguste ellip- 
soideo, pileo 4-5 mm longo laevi dimidia infera 
oblonga dimidia supera rotundato-pyramidali 
apice oblongo-pentagonali truncato, stigmate 
sessile 0.9-1. 3 mm diametro orbiculari vel 
orbiculari-cordato sessili exelevato brunneo api- 
cem obtecto, endocarpio mediali cartilagineo 
lateribus brunneis 0.1 mm crassis, semine 5.5 
mm longo ellipsoideo, mesocarpio apicali 1.5 
mm longo fibroso et medulloso, mesocarpio 
basali parvo fibroso et carnoso. 
PACIFIC SCIENCE, Vol. XIX, January 1965 j 
DIAGNOSIS OF HOLOTYPE: Leaf 2.5 m long, 
11 cm wide, thick coriaceous, 1 -ribbed, 2- ! 
pleated, at midsection with 55 parallel second- 
ary veins in each half, these inconspicuous, the 
tertiary cross veins oblique, forming short rhom- 
bic meshes, the blade ligulate, long tapering to a 
35 cm subulate, trigonous apex which about 10 j 
cm down is 3.5 mm wide, near the base the j 
margins with spines 2. 5-3. 5 mm long, 4-10 mm 
apart, thick arcuate deltoid, ascending, pale, the 
midrib below with similar spines 2-3 mm long, 
10-20 mm apart, the lowest reflexed, the others 
ascending; at midsection the margins with spines 
2-2.2 mm long, 8-17 mm apart, deltoid, flat- 
tened, salient, red-tipped; the midrib below 
with serrations 1.5 mm long, 9-20 mm apart; 
along the subulate apex the margins and the 
midrib below with heavy serrae 1—1.5 mm long, 
6-15 mm apart; pistillate peduncle 2 cm in 
diameter, trigonous; syncarp probably single, 
20-26 cm long, 4.5 cm in diameter, subcylindric 
but gently tapering upwards and near the tip 
3 cm in diameter, 3 -sided, bearing about 1,776 
drupes, these distinct, 9-10 mm long, 1.7-2. 5 
mm wide and thick, narrowly oblance-ellipsoid, 
upper Vs free, the body 7-8 mm long, narrowly 
ellipsoid; pileus 4-5 mm long, smooth, the 
lower half oblong, the upper half rounded pyra- 
midal to the oblong pentagonal truncate apex; 
stigma sessile, 0.9- 1.3 mm in diameter, orbicular 
to orbicular-cordate, sessile, flush, brown, cov- 
ering the apex; endocarp median, cartilaginous, 
the walls brownish, 0.1 mm thick; seed 5.5 mm 
long, ellipsoid; apical mesocarp 1.5 mm long, 
fibrous and pithy; basal mesocarp sparse, fibrous 
and fleshy. 
HOLOTYPUS: Sarawak, Bau, H. N. Ridley 
(SING). 
SPECIMENS EXAMINED: British North Bor- 
neo, Tawao, Elphinstone Prov., Oct. 1922 to 
March 1923, A. D. E. Elmer 21,022 (c, M, 
SING). 
DISCUSSION: P. trigonus is a member of the 
section Microstigma, as is its closest relative, P. 
subumbellatus Solms of northeast New Guinea, 
a species with the syncarp 20 cm long, 8-10 cm 
in diameter, surrounded by long spathes; drupes 
12-15 mm long, 3 mm wide; stigmas 1-5 mm 
wide; and the leaves 6 cm wide. P. trigonus St. 
