Nephelium daedaleum Radlk.

Tree, up to 33 m high, dbh up to 70 cm, sometimes with buttresses. Twigs 2-5 mm thick, tomentellous, glabrescent. Leaves 1-3(-5)-jugate; petiole 2-9.5 cm long, 1-2 mm thick, terete to semi-terete; axes tomentellous, sometimes glabrescent; petiolules 5-9 mm long, above variably grooved, mostly with a median rib. Leaflets elliptic, 6.5-18 by 2.5-7 cm, index 2-3.5, pergamentaceous, above hairy all over, soon glabrescent the midrib sometimes excepted, beneath tomentose on midrib and nerves, densely sericeous in between; domatia absent; base acute to rounded; sides curved; apex not to abruptly acuminate, acumen short and broad to long and slender, obtuse; midrib above prominulous, nerves 0.5-1.25 cm apart, above slightly grooved, intercalated veins often well developed, reticulum above minute, inconspicuous or invisible, beneath mostly invisible, sometimes the veins prominulous, a bit scalariform. Inflorescences terminal. Sepals nearly free, c. 3 mm long. Petals 4 or 5, 1.75-2 by 1.5-2 mm, the claw up to 1 mm long, the blade auricled to funnel-shaped, at least claw and outside of blade densely woolly. Disc glabrous. Stamens 8 (sometimes less?). Ovary 2-celled. Fruits flattened-ellipsoid, bulging at base to the abaxial side, 4 by 2.25 by 1.5 cm, densely shortly pubescent, fairly densely set with pyramidal warts c. 1.5 mm high, deeply irregularly fissured longitudinally (possibly thin-fleshy when fresh and rupturing only when dry; after boiling the surface closes up and the fissures are glabrous inside); wall coriaceous, 2-2.5 mm thick.

Primary lowland kerangas or mixed dipterocarp forest on slopes or ridges; on sandstone, sandy clay, or loam soils; at elevations up to 570 metres.

Uses Sometimes cultivated, probably because of the fruit.

Can be grown by seedlings.