Chonemorpha verrucosa (Blume) D.J.Middleton

Large woody climber. Branchlets lenticellate, sparsely pubescent, turning glabrous with age. Leaves: petiole 8-26 mm long, sparsely puberulent; blade ovate, elliptic or slightly obovate, 4-20.8 by 2.2-11 cm, 1.7-3.1 times as long as wide, apex acuminate, base obtuse to cuneate, sparsely puberulent on midrib to glabrous above, sparsely puberulent all over beneath, 8-16 pairs of secondary veins, tertiary venation scalariform. Inflorescence lax, 4.8-14.5 cm long; peduncle1.4-5.5 cm long, sparsely puberulent; pedicels 6.5-22 mm long, sparsely pubescent; bracts slightly leafy. Calyx of a tube at the base and erect or spreading lobes; 3-6 mm long, sparsely puberulent to glabrous outside, lobes ciliate, tube 0.13-0.42 of calyx length; lobes 2-5.2 by 1.1-2 mm, 1.1-2.6 times as long as wide; colleters in a row inside, glabrous. Corolla white, fragrant; tube 6-8.5 by 1.8-3.6 mm, 1.3-2.1 times as long as calyx, 0.5-0.8 times as long as lobes, glabrous or very sparsely puberulent outside, pubescent around stamens and top of tube inside, densely pubescent in throat; lobes 8.8-16 by 5.6-10.5 mm, 1.4-1.9 times as long as wide, obovate, falcate, glabrous outside, pubescent at base of lobes inside. Stamens inserted at 2.6-4 mm from corolla base which is 0.4-0.5 of tube length; anthers 3.3-4.3 by 0.6-0.7 mm, 4.9-5.7 times as long as wide. Disk in a ring, crenate around the margin, 0.8-1 mm high, 0.3-1 times as high as ovaries. Ovaries 1-2.5 mm high, glabrous; style 1-2.3 mm long, glabrous; style head 1.5-1.6 mm long. Fruit of paired linear follicles, smooth, glabrous to sparsely puberulent, 15.8-44 cm by 6-17 mm. Seeds: grain 11-30 by 3-4.8 mm of which rostrate apex 3.2-19 mm long, coma 2.7-7.5 cm long.

Dense montane forests, ravines at elevations of 300-1,000 metres.

UsesPreviously exploited for a high quality rubber before the widespread use of Hevea brasiliensis.

Can be grown by seedlings.