3 
Flora of the Malayan Peninsula. 
Seeds faintly ridged on the dorsal surface, the ventral 
surface with a shallow groove .. .. 11 . P. polycarpa. 
Erect shrubs, usually small : — 
Flowers 4-merous : — 
Leaves with a strong pale intra-marginal nerve . . 12. P. calocarpa. 
Flowers 5-merous : — 
Flowers shortly pedicellate, in dense globular cymules at 
the ends of the long-peduncled branches of a terminal 
umbellate cyme ; leaves deciduously puberulous, with 
9 to 13 pairs of main-nerves ; fruit -3 in. long ; seeds 
4-ridged on the dorsal surface, slightly concave on the 
ventral . . . . . . . . . . . . 13. P. multicapitulata. 
Flowers sub-sessile, in short condensed dichotomous sessile 
axillary cymes; leaves with scurfy pubescence and 8 to 11 
pairs of main-nerves ; seeds 5-ridged on the dorsal and 
broadly grooved on the ventral surface . . . . 14. P. tortilis. 
Flowers in a terminal umbellately branching cyme 
Seeds with a single dorsal ridge, the ventral ' surf ace 
plane : — 
Leaves quite glabrous : — 
Leaves 6 to 10 in. long ; main-nerves 12 to 15 
pairs . . . . . . . . 15. P. Griffithii. 
Leaves usually under 6 in. long, main-nerves 8 to 
10 pairs .. .. .. ..16. P.angulata. 
Leaves adpressed-pubescent, 6 to 12 in. long . . 17. P. Helferiana. 
Seeds with a single dorsal ridge, the ventral surface 
with a groove ; leaves 5 to 8 in. long, quite glabrous, 
main-nerves 7 to 8, rarely 10 pairs . . . . 18. P. montana. 
Seeds with 5 ridges on the dorsal surface, the ventral 
surface plane : — 
Leaves glabrous : — 
Leaves oblong-elliptic to oblanceolate-elliptic, 3-5 
to 8 in. long ; fruit - 25 in. long . . . . 19. P. viridiflora. 
Leaves softly pubescent 
Leaves elliptic to elliptic-oblong, the bases cuneate 
rounded or cordate, 3\5 to -5 in. long ; fruit '25 to 
•3 in. long . . . . . . . . 20. P. Birchiana. 
Leaves elliptic, the upper surface glabrous except 
the midrib, 5 to 7 in. long ; fruit - 45 in. long . . 21. P. fulva. 
Seeds 5-ridged on the dorsal surface and 2-grooved on 
the ventral ; leaves glabrous on the upper surface, 
their margins crenulate . . . . . . 22. P. fulvoidea. 
Seeds with 5 ridges on the dorsal surface and 1 ridge 
on the ventral ; leaves glabrous, usually oblanceolate 23. P. stipulacea. 
Seeds 4-ridged on the dorsal surface, plane on the 
ventral : — 
Leaves elliptic, tapering equally to each end, 9- to 
10-nerved ; calyx-lobes very long caudate-acuminate 24. P. Curtisii. 
Leaves obovate-oblong or obovate-oblanceolate, 10- to 
14-nerved ; calyx-lobes short, broad, blunt . . 25. P. rhinocerotis. 
