328 Flora of the Malayan Peninsula. 
Kerling, flower light yellow, fruit sealing-wax red, King’s Collector 
8810. 
49, PIPER NIGRANTHERUM, C. DC. in Records Bot. Surv. Ind. 20 
(1912). Branches glabrous, the spiciferous 2 mm. thick; collenchyma 
not libriform, in distinct thick and laterally much widened bundles 
or even subcontinuous ; no peripheric lysigenous canals ; dark-reddish 
cells abundant in bark and pith. Leaves moderately long-petioled, 
glabrous; limb rigid-membranous when dry, minutely pellucid- 
dotted, up to 16°5 cm. long and 9 cm. wide; ovate, acutely acu- 
minate, the base inequilateral, cordate, both sides inserted at thie 
same level, one wider and longer than the other ; 8-plinerved, the 
central nerve emitting on both sides 2 ascendent nerves the upper- 
most from 16 mm. above the base, and having on one side of it 3 on’ 
the other 2 nerves free from the base, the inner subascendent the 
outer more arcuate and much shorter; petiole nearly 15 mm. long, 
with sheath prolonged up to its middle. Peduncle as long as the 
petiole. Spike: $ about 9 cm. long and 3°5 mm. thick; rhachis 
hirsute ; bract glabrous, its limb obovate, attenuate at the lower end, 
with a central clavate pedicel; stamens 2, anthers ovate, shorter 
than the filaments, dark black when dry. 
SINGAPORE : in the Botanic Garden, and probably also spontane- 
ous, Ridley. 
50. Piper FILIpEs, C. DC. in Records Bot. Surv. Ind. 20 (1912). 
Creeping. Stalk and branches very slender, glabrous, the spici- 
ferous branches up to 1 mm. thick ; collenchyma libriform, in distinct 
bundles; a single central lysigenous canal ; a zone of sclerosed cells 
between the phloem masses of the peripheric fibro-vascular bundles. 
Leaves shortly petioled, glabrous; limb membranous when dry, 
minutely reddish-pellucid-dotted, about 9 cm. long, 4 cm. wide; 
oblong-ovate, acutely attenuate, the base rounded, both sides of same 
length but slightly unequally wide; 5-plinerved, the central nerve 
emitting 2 opposite or subopposite ascendent nerves from about 6 mm. 
above the base, and having on each side of it one ascendent nerve 
free from the base ; petiole very thin, with a sheath prolonged a little 
above its base. Peduncle filiform, glabrous, nearly 28 mm. long. 
Spike: ¢ 16 mm. long and nearly 1 mm. thick when flowering, white 
when living; rhachis hirsute; bract glabrous, its limb rounded, 0°5 
mm. in diam. with a short central pedicel; stamens 3, very short, 
anthers rounded, 4-valvate. 
