468 
PACIFIC SCIENCE, Vol. XVII, October 1963 
side towards the apex the pleats with serrula- 
tions 0.2-0. 3 mm long, 1-4 mm apart; pistillate 
inflorescence erect, straight; peduncle 22-30 cm 
long, slender clavate, 9-12 mm in diameter at 
apex, leafy bracted; floral bracts herbaceous, col- 
ored, drying blackish brown, the lowest one 19 
cm long, 23 mm wide, linear-lanceolate, entire 
below, the outer p 3 closely subulate-serrate; syn- 
carp 9.5 cm long, 7.2 cm in diameter, obovoid- 
ellipsoid, with numerous drupes, these 32-34 
mm long, 6-7.5 mm wide, 4-6 mm thick, nar- 
rowly oblance-fusiform, 1 -celled, upper free, 
the body 24-26 mm long, oblanceoloid, the sides 
flat; pileus 13-14 mm long, cartilaginous, the 
base 5-6 mm high, rounded pyramidal, 6-angled, 
tapering upwards; style 6-8 mm long, stout 
subulate, angled, divergent, slightly sinuous, but 
nearly straight; stigma 3-4 mm long, distal, 
linear, brown, creased, papillose, running to the 
apex; endocarp in lower obovoid, the apex 
truncate, cartilaginous, stramineous, the walls 
0.1 mm thick; seed 8-9 mm long, obovoid; api- 
cal mesocarp 7 mm long, filled with a delicate 
white pith; basal mesocarp 5-6 mm long, fi- 
brous and fleshy. 
HOLOTYPUS: Thailand, Lower Siam, Kopah, 
Jaujau, 9 Dec. 1917, Md. Haniff & Md. Nur 
2,703 (SING). 
discussion : P. biplicatus is a member of the 
section Aero stigma, as is its closest relative, P. 
pseudofoetidus Martelli of Burma, a species 
which has the syncarp subglobose; drupes 20 
mm long, 5 mm wide; endocarp 10 mm long; 
and the apical mesocarp 4 mm long. P. bipli- 
catus has the syncarp obovoid-ellipsoid; drupes 
32-34 mm long, 6-7.5 mm wide; endocarp 13 
mm long; and the apical mesocarp 7 mm long. 
The new epithet is from the Latin, bi, twice, 
plicatus, folded, in reference to the two longi- 
tudinal pleats of the leaves. 
Pandanus monotheca Martelli, Soc. Bot. Ital., 
Bui. 303, 1904; Webbia 4(2): pi. 41, fig. 
18-20, 1914. 
THAILAND: Bachaw, Pattani, evergreen forest, 
600 m. alt., July 14, 1923, A. F. G. Kerr 7J91 
(bk). This species, originally described from 
Malaya, is here recorded for the first time for 
Thailand. 
Pandanus Toei sp. nov. (sect. Acrostigma) 
Figs. 193, 194 
NOM. vern.: "toei.” 
DIAGNOSIS HOLOTYPI: Acaulescens, foliis 1.3 
m longis in media 20 mm latis proxima basem 
15-18 mm latis supra midervum sulcatis 
2-plicatis chartaceis supra viridibus infra palli- 
dioribus ligulatis in apice 9 cm longo 0. 3-0.8 
mm lato subulato trigono in sectione mediali 
cum 26-29 nervis secundariis parallelis in quo- 
que latere, nervis tertilis non evidentis basi 
amplexicauli et inermi sed ex 4. 5-6. 5 cm mar- 
ginibus cum aculeis 1.3-2 mm longis 3-7 mm 
separatis subulatis adscendentibus luteis, mid- 
nervo infra ex 6-8.5 cm cum aculeis 1.5-2. 5 mm 
longis 6-15 mm separatis crassiter subulatis 
arcuatis reflexis, in sectione mediali marginibus 
cum serrulis 0.2-0. 6 mm longis 3-7 mm sepa- 
ratis, midnervo infra cum aculeis 2 mm longis 
remotis subulatis arcuatis reflexis vel adscenden- 
tibus, in apice subulato marginibus et midnervo 
infra cum serrulis 0.2 mm longis 0.5-2 mm se- 
paratis, inflorescentia foeminea terminali erecta 
cum syncarpio unico, pedunculo 15 cm longo 
clavato trigono in apice 5 mm diametro in di- 
midia ultima cum bracteis foliosis paucis eis su- 
peris 40-50 cm longis 15-18 mm latis, syncarpio 
3.5 cm diametro globoso viridi cum circa 160 
drupis, eis 15-18 mm longis 4-5 mm latis 3-4 
mm crassis subfusiformibus parte 2 A supera li- 
bera corpore oblanceo-ellipsoideo obtuso 10-12 
mm longo, pileo 9-11 mm longo basi 2-3 mm 
alto oblato-pyramidali-hemispherico laevi 5-7- 
anguloso angulis in stylo continuis, stylo 5-7 
mm longo valido 5-7-anguloso subulato proxime 
arcuato parte exteriori osseosa lucida lutea, stig- 
mate 2.5-3 mm longo distali sublineari sulcato 
brunneo papilloso paene ad apicem extento, en- 
docarpio in tertia infera cartilagineo luteo muris 
0.1 mm crassis intra lucidis, semine 6-7 mm 
longo 2-2.5 mm diametro oblanceoloideo trun- 
cato, mesocarpio apicali 2 mm longo hemisphe- 
rico vel oblato-hemispherico et cum membranis 
medullosis albis, mesocarpio basali fibroso et car- 
noso. 
DESCRIPTION OF ALL SPECIMENS EXAMINED: 
Acaulescent, or decumbent with the stem 20 
cm tall, 12-22 mm in diameter, brown, smooth; 
leaves 0.96-1.3 m long, 20 mm wide near the 
middle, 15-18 mm wide near the base, 1-fur- 
