Protologue: Trans. Linn. Soc. London, Bot. 1(1): 16. 1875.
Tree to 25m tall; slash pink-brown with white latex. Stipules absent. Leaves alternate, simple, clustered at twig tips, tapering-oblanceolate; apex obtuse-rounded, with large sub-triangular acumen; base long decurrent. Secondary venation widely spaced (>10mm) parallel, forming continuous sub-marginal loops; tertiary venation scalariform with some looping backwards linking midrib to secondary. Abaxial surfaces glabrous. Inflorescences in fascicles, 4-6 flowers per fascicle. Calyx 5, 5-12mm long. Corolla tube and lobes 9-17mm long. Stamens to 12mm long. Ovary 5-locular. Fruit subglobose, yellow-green maturing to dull brown.