2 Flora of the Malayan Peninsula. 



corymbs or fascicles, bracteolate or not, never involucrate (in the 

 Malayan species). Calyx-tithe short ; the limb persistent in part 

 or deciduous. Corolla-tube straight, short ; the throat naked or hairy ; 

 the lobes of the mouth 5, rarely 4 to 6, valvate in bud. Stamens as 

 many as the corolla-lobes, inserted on the throat or mouth ; anthers 

 linear or obtuse, attached dorsally near the base to short or long 

 filaments. Ovary 2-celled; style long or short, bifid; ovules often 

 cuneiform, solitary, erect from the base of each cell. Fruit ^mall, 

 baccate or drupe-like, ovoid globose or oblong, smooth or ridged, 

 composed of two plano-convex, 1-celled, 1-seeded pyrenes ; or didymous 

 and separating into two cocci. Seeds plano-convex, the ventral surface 

 grooved or plane, the dorsal smooth, ridged or sulcate ; testa thin, 

 albumen hard ; embryo small, basal ; cotyledons broad, thin ; radicle 

 inferior. — Distrib. Species about 550 ; tropical or sub-tropical. 



Scandent : — 



Flowers 4-merous : — 



Panicles lax ; leaves elliptic- or oblong-lanceolate . . 1. P. laxijlora. 



Flowers 5-merous : — 



Seeds with 4 ridges on the dorsal surface, the ventral 

 surface plane : — 



Flowers sessile in small capitula at the ends of the 

 branches of the cymes : — 



Leaves ovate to oblong-elliptic, 1*75 to 2-5 in. broad ; 



inflorescence puberulous . . . . . . 2. P. Diorindcefiora. 



Leaves narrowly elliptic, less than 1*25 in. broad ; 



inflorescence coarsely pubescent . . . . 3. P. Maiinjaiji. 



Flowers pedicellate in cymosely branched cymes : — 

 Leaves elliptic-oblanceolate to elliptic, the midrib 

 sometimes pubescent on the lower surface, otherwise 

 glabrous ; main-nerves 7 to 10 pairs ; petioles "4 to 

 •75 in. long; fruit -25 in. long .. . . 4. P. sarmentosa. 



Leaves narrowly elliptic-oblong, main-nerves 4 to 6 

 pairs ; petioles -4 to -8 in. long ; fruit -35 in. long . . 5. P. Kunstleri. 

 Leaves broadly obovate or sub-ovate ; main-nerves 5 

 to 10 pairs ; petioles -5 to 1-5 in. ; fruit -4 in. long. . 6. P. i^enanr/ends. 

 Seeds with 8 ridges on the dorsal surface, the ventral 

 surface plane : — 



Flowers pedicellate, in cymosely branched paniculate 



cymes ; fruit narrowly ellipsoid . . . . 7. P Scortechinii. 



Flowei's on short pedicels in globular cymes at the ends 

 of the branches of the panicles : — 



Leaves and stems glabrous ; fruit subglobose, -2 in. 



long . . . . . . . . . . 8. P. inlulifera. 



Leaves and stems and inflorescence rusty-pubescent 9. P. ovoidea. 

 Seeds with more than 4 ridges on both dorsal and ventral 

 surfaces . . . . . . . . . . 10. P. Bidleyi. 



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