56 ANNALS OF THE ROYAL BOTANIC GARDEN, CALCUTTA. P. dubius. 
papillose outside, tubular-ventricose, divided in its upper fourth into 3 semi-ovate 
apieulate lobes; filaments of the stamens united to form a tube adnate to the 
undivide part of the corolla, free above and parted into 6 very thick, short lobes 
of which 3 are longer than the other 3; all furnished with well conformed 
cordate-subdidymous anthers, giving to the flowers the appearance of being herma- 
phrodite ; ovary oblong, bearing above a ring of relatively large scales and terminated 
by 3 thick conical stigmas. Fruit globular-turbinate (when thoroughly mature), briefly 
conieally beaked ; scales in about 24 vertical series, faintly grooved along the centre, 
dull, einnamon-brown with a darker intramarginal line, and pale finely ciliate margins 
and bluntish apices. Fruiting perianth not accrescent but becoming woody; the 
corolla, and the connate staminal tube splitting into irregular very thick lobes. 
Hapirat.—The Malay Peninsula: Sufigei Larut plain in the district of Perak 
(L. Wray Jun. No. 2421, male plant, and No. 2422 with female flowers—in Herb. 
Mus. Perak and Cale.; and King’s collector No. 5282 Herb. Calc., specimen . with 
young fruits) Probably to P. Wray belongs a specimen from a young plant 
collected by ^ Seortechin? (No. 457b in Herb. Becc.) also in the distriet of Perak, 
along rivers in wet-ground ; native name “ Rotang tiga saki” meaning the “ trigonous 
Rotang." 
Osservations.—It is evidently related to P. geminiflorus, but quite distinct by 
its leaves (even those of the uppermost part of the plant), having a rather elongate 
petiolar part ; by the spadices being considerably smaller and having thinner flowering 
branches; but especially by the flowers both male and female: the male being very 
narrow Mid clavate, the female elongate-elliptical and acute, and with the staminal 
tube almost entirely connate with the corolla; and finally it differs by the smaller 
fruit, having fewer series of scales. 
Scortechini’s specimen No. 457, mentioned above, is taken from a young plant; 
the sheathed stem has 3 distinct although rather obtuse angles, the faces are 15 mm. 
wide and slightly convex and sprinkled with short conical prickles ; the naked cane 
is also trigonous with the faces 1 em. wide. In the first state of their life it seems 
impossible to distinguish P. Wrayi from P. geminiflorus, for certainly both at that 
time have trigonous stems. In P. Wrayii that abnormal shape of the stem is main- 
tained also, although rather faintly, in the terminal part of the plant. 
PLATE. 35.—Plecvocomiopsis Wrayii Becc.— One of the male partial inflorescence 
(wanting the end). ‘The type specimen Wray No. 241 in the Calcutta Herbarium. 
Puare. 36.—Plectocomiopsis Wrayii Becc.—One of the female partial inflores- 
cences. From the type specimen No. 2422 in the Herbarium at Calcutta. Young 
fruits and a detached fruiting perianth. From King’s collector No. 5282 in the 
Caleutta Hebarium. 
3. PLecrocomiorsis DUBIUS Bece. sp. n.— 
P. geminiflorus (non Bece.) Ridley, Mat. Fl. Mal. "NEL n. 214. \ 
Descriprion.—A large climber, 20 or more metres tall (Ridley). Sheathed stem 
very obsoletely trigonous, 3°5 cm. in diameter in the specimen seen by me. Leaf- 
sheaths not puckered above, very suddenly passing into the petiole, truncate exactly 
