36 
CXV. PIPE RACEME. 
[Piper. 
(20) P. collinum C. DC. Rec. Bot. Surv. Ind. vi, 17. 
Slender glabrous climber to 13 ft. tall. Leaves membranous 
elliptic lanceolate acute, acuminate, base equal acute, pennineryed; 
midrib with 4 pairs of nerves; 5 to 6-i in. long, x-g to 2-8 in. wide; 
petioles *2 in. long. Peduncles 1*2 in. long. Male flowers unknown. 
Female spikes nearly 3 in. long; rachis hairy. Bracts obovate, 
sessile, -04 in. wide. Ovary free, ovate; stigmas 3, linear. Drupe 
ovate acute, -2 in. long; pedicel shorter. Hab. Perak, Goping, 
Limestone Hills (Kunstler). 
I have not seen this species. 
(21) P. xanthocarpum C. DC. Rec. Bot. Surv. Ind. vi. 16; 
Journ . /Is. Soc. Beng. l.c. 324. 
Climber, glabrous. Leaves elliptic-lanceolate, acutely acuminate, 
base equal, glabrous above, puberulous beneath, 7- to g-nerved; 
midrib with 1 or 2 lateral nerves, 5 to 6 in. long, 2-4 in. wide; 
petioles glabrous, *24 in. long. Peduncles 1 in. long. Female 
spikes, 4-5 in. long; rachis hairy. Bracts oblong, tip attenuate 
sessile, -i in. long. Ovary ovate, free. Stigmas 3 or 4, ovate 
acuminate. Drupe globose, nearly -i in. through, orange-colour, 
longer than the pedicel. Hab. Perak at 1000 ft. altitude (Wray). 
I have not seen this species. 
(22) P- mucronatum C. DC. Rec. Bot. Surv. Ind. vi. 15; Journ. 
As. Soc. Beng. l.c. 323. 
A glabrous climber, rather woody; stem -i in. through. Leaves 
stiffly thin coriaceous, obliquely lanceolate acuminate, base 
narrowed blunt, equal-sided; nerves 2 pairs, one pair from base, 
one midway above, conspicuous elevate with conspicuous trans¬ 
verse nervules elevate beneath; 4*1 to 6 in. long, i*6 to 2*25 in. 
wide; petioles -i to -23 in. long. Spikes opposite, axillary, solitary, 
4 to 5 in. long, stout. Male unknown. Female spikes, rachis 
puberulous. Bracts linear-oblong, blunt at both ends adnate. 
Drupe elliptic, beaked, distant *i in. apart, sessile in oval scars. 
Hab. Sungei Ujong (Cantley). Perak, Lenggong (Ridley). 
(23) P. Burkillii Ridl. Journ. Roy. As. Soc. S. Br. 82, p. i8g. 
Slender climber; internodes jointed, joints slightly enlarged. 
Leaves membranous, glabrous, lanceolate acuminate, sub-acute, base 
usually narrowed and slightly unequal; nerves 1 pair by the edge 
from base, very fine, 2 from near base of midrib ascending, 4 or 5 
pairs from side of midrib above, all very fine; 3 to 4 in. long, 
1-25 to 1-35 in. wide; petioles *5 in. long or less. Male flowers 
unknown. Female spikes, peduncles -15 in. long; spikes 1*5 to 
2 in. long, hairy. Bracts very short, rounded. Ovary sunk in a 
pit; stigmas short, recurved sub-ovate, 3 or 4. Fruit unripe, 
