Flora of the Malayan Peninsula. 317 
PERAK: Larut at 1200 ft. altitude, November, Kunstler 2557; 
in dense jungle, rocky soil, at 600—800 ft. altitude, a long creeper 
over 50 feet long, King’s Collector 1067, male specimens; Wallich, 
female specimen in Herb. Calcutta. 
With its bracts the lateral margins of which are not thinned, this species is. 
somewhat intermediate between sections EupIPpER and MULDERA. 
30. PIPER DINDINGSANUM, C. DC. in Records Bot. Surv. Ind. VI. 
12 (1912). Branches glabrous, the spiciferous 2 mm. thick; collen- 
chyma nearly continuous and partly libriform ; a central and several 
peripheric lysigenous canals. Leaves moderately long petioled, 
glabrous ; limb membranous when dry, up to 12°56 cm. long and 65 
em. wide, ovate, acutely acuminate, the base equilateral and 
rounded or repand subcordate; 7-plinerved, the central nerve emit- 
ting 2 opposite ascendent nerves from about 10 mm. above the base. 
and having on each side of it 2 subascendent nerves from the base, 
the external much thinner than the others; petiole 10 mm. long 
with a basal sheath. Peduncle 14:7 mm. long, glabrous. Spike: 2 
16°8 mm. long when ripe, rhachis hirtillous ; bract glabrous, its limb 
rounded, 1 mm. wide with a central moderately long pedicel contain- 
ing gelified cells; ovary free, glabrous, ovate; stigmas 3 linear. 
Berry obovate-globose, 3 mm. long, black when dry. 
Dinpines: July, Ridley 8370. 
31. PrpER cANINUM. Blume in Verh. Batav. Genoots. XI. 214, 
f. 26 (1862). Scandent. Branches glabrous, branchlets brown when 
dry, shortly hirtillous when young in the male, more densely and 
longer hirsute in the female, the spiciferous nearly 0°5 mm. long in 
the male | mm. in the female; collenchyma in distinct bundles, its 
internal zone libriform; a single row of intramedullar bundles; a 
single central lysigenous canal in the male and a few peripheric in the 
female; an interfascicular zone of sclerosed cells opposite the medul- 
lary rays in the male. Leaves shortly petioled; the limb membran- 
ous and with pellucid dots when dry, glabrous above more or less 
pilose underneath ; up to li cm. long and up to 23 mm. wide in the 
male and to 4cm. in the female: ovate-oblong, acutely acuminate, 
the base equilateral attenuate; 5-plinerved, the central nerve emitting 
2 ascendent nerves the uppermost from 10:5 mm. above the base, and 
having on each side of it one ascendent nerve free from the base; 
petiole slender, up to 10°5 mm. long with basal sheath. Peduncle as 
long as the petiole, puberulous. Spike: ¢ many times shorter than 
