Macaranga kingii Hook.f.

Small trees up to ca. 10 m tall and 6 cm dbh, reproductive from 3 m tall. Twigs hollow, ant inhabited, glabrous, sometimes glaucous, with small ant openings (ca. 1 mm in diameter). Stipules narrowly ovate to triangular, semi-persistent, recurved, not surrounding the twigs, 28-33 mm long by 10-16 mm wide. Petioles glabrous, up to ca. 39 cm long. Leaves alternate, peltate, 5-lobed, 36-60 cm long, 38-60 cm wide, length/width-ratio 0.94-1.11; secondary veins 9-13, ending in the margin and looping; central lobe 23-33 cm long by 10-15 cm wide, lateral lobes 22-29 cm long; leaf base truncate (to broadly rounded), peltate margin length 4.5-10 cm; leaf margin with glands; leaf upper surface glabrous; leaf lower surface usually glabrous, sometimes with hairy veins, not gland dotted. Staminate inflorescences branched; flowers clustered per bracteole; bracteoles with entire margin. Pistillate inflorescences branched; fruits 10-15 mm wide, 4-5(-6)-locular, two glandular patches per carpel wall developing into conspicuously lengthwise raised ridges.

Ecology: Collected up to ca. 500 m altitude. A shade-tolerant forest understorey species, usually near rivers or streams and periodically swampy areas.

Distribution: Penisular Malaysia, Sumatra and Borneo. In Borneo only known from western Sarawak.