Vahadenia

Lianas up to 30 m high climbing in trees; white latex present in all parts; branches with many lenticels. Leaves opposite, petiolate, entirely glabrous, obovate to elliptic. Inflorescences lax cymes, axillary or terminal, few- to many-flowered. Flowers 5-merous, white, reddish at base, sweet-scented. Calyx green, ciliate, otherwise glabrous, with many colleters in several rows at base. Corolla glabrous except for a tuft of hairs inside at base of lobes; tube almost cylindric, 1.5-4.1 times as long as sepals; lobes as long as to longer than tube, narrowly obovate, with 1 longitudinal groove outside. Stamens arising +/-in middle of corolla tube; filaments glabrous, white; anthers narrowly ovate to cordate. Ovary cylindric, abruptly narrowing into style, pubescent in upper half, style glabrous, style head conical from a thickened base, minutely 2-lobed at level of anthers. Fruit syncarpous, globose, pear-shaped or obovoid; pulp orange. Seeds 10-40, ellipsoid, laterally compressed; testa thin; endosperm thick, white; cotyledons ellipsoid, undulate; embryo very small.