324 PetR/EOVitex. 



2-ovuled; ovules pendulous, attached at a central placenta; 

 fruit capsular with 2 (or by suppression 1) seeds; seeds 

 exalbuminous. 



Distribution: Malay Peninsula! and Archipelago!, Philip- 

 pines!, Bismarck- Archipelago! 



1. a. Cymules or cymes composing a terminal panicle; leaflets 



glabrous, or pubescent on the main nerves or on the 



lower side near the base only 2. 



b. Cymules or cymes axillary ; leaflets glabrous or pubescent 4. 



2. a. Leaflets 2V2- 10 by 1.2— 5 cM 3. 



b. Leaflets (7—) 10— 12 by (27=— )6'/2— 7V2 clVI., glabrous 



beneath, except on the midrib; lobes of fruiting calyx 

 1.5—2 by 0.5—0.7 cM 1. P. trifoliata p. 324. 



3. a. Leaflets, with plumose hairs on their lower surface near 



the base, 3 — 6V2 by 1.6^ — 4.2 cM. ; tomentum rusty- 

 coloured; lobes of calyx enlarged already before flowering; 

 in fruit 1.5—1.8 by 0.4—0.5 cM, 2. P. temata p. 325, 

 b. Leaves 3 — 9-foliolate; leaflets 6 — 9-nerved, glabrous on 

 both sides; tomentum grey; inflorescences not leafed; 

 lobes of calyx in fruit 0.5—1 by 0.15—0.3 cM. 



3. P. Riedelii p. 326. 



4. a. Lower side of leaflets glabrous, or pubescent on the 



nerves only; cymes 12 clVI. long, 7V2 cM. in diam.; 

 calyx-tube 0.6 — 0.9 cM., capsule not striate. 



4. P. bambusetorum p. 328. 

 b. Leaflets pubescent beneath 5. 



5. a. Leaflets 6, usually coarsely serrate; inflorescences 20 — 30 



cM. long; calyx-lobes in fruit 1 cM. 



5. P. pubescens p. 328. 

 b. Leaflets 3, entire; inflorescences reaching 15 cM. in length; 

 calyx-lobes in fruit 1.9—2.5 cM. 6. P. Scortechinii p. 329. 

 1. P. trifoliata Merrill, Phil. Journ. Sci. Bot. II, 425 

 (1907) — A scandent shrub; branchlets and axis of inflo- 

 rescences quadrangular, with petioles and panicles minutely 

 puberulous, glabroscent; leaves opposite, 3-foliolate; leaflets 

 subequa), chartaceous or subcoriaceous, ovate to oblong- 

 ovate, base rounded, often somewhat inequilateral, apex 



