Crudia mutabilis

Author: de Wit

Morphological description
Tree 15-24 m high. Stipules free, interpetiolar, falcate, up to 7.5 mm long, subglabrous, caducous.

Leaves (4 or) 5- or 6-foliolate, shortly petioled; petiole and rachis 6.5-14.5(-16.5) cm long, glabrous, prolonged beyond the upper petiolule into a subulate, caducous part, often leaving a minute tip; petiolules short, 4-9 mm, glabrous. Leaflets more or less coriaceous, elliptic, or obovate-elliptic, or ovate, (6.3-)13.5-23.5 b y (3.2-)5-7.9 cm, the lower ones usually smaller; apex shortly acuminate or caudate; base cuneate, subacute, obtuse, or rounded, symmetric; glabrous; nerves 4-7 per side.

Inflorescences racemose, axillary, 8-16(-60) cm long, pendulous, the rachis minutely puberulous, glabrescent, loosely flowered; bracts ovate, c. 3 mm long, or 3-lobed and the central lobe relobed with 3-6 needle-like segments, glabrous; bracteoles minute, c. 0.6 mm long; pedicels 6-14 mm, articulated at the base, minutely, sparsely puberulous.

Flowers sparsely puberulous outside. Hypanthium c. 1 mm long, glabrous inside. Calyx lobes unequal, broadly elliptic or ovate, or orbiculate, 5-7 by 3.5-5 mm, glabrous inside. Stamens 10; filaments up to c. 18 mm, glabrous; anthers c. 1 mm long. Pistil shortly stipitate; stipe c. 1 mm, free, glabrous; ovary c. 4 mm long, densely brown hairy, 4- or 5-ovuled; style up to c. 15 mm, glabrous except sparsely hairy towards the base; stigma obscure, slightly thicker than the style.

Pods (fide de Wit, 1950: 424) obliquely obovate, c. 11 by 5-6 cm, with stout veins and heavy, raised sutures, beaked, flat, puberulous.

Malesia: Sumatra (Palembang), Java (Priangan).

Habitat & Ecology
In forest on not inundated sandy soil in flat country, c. 15 m altitude. Flowering in April; fruiting in May.