Shrub or tree (2—)5—15 m. Leaves chartaceous, (ellip-tic-)oblong, 10-25(-45) by 2.5-8(-16) cm, base attenuate to rounded, rarely subcordate, apex acute(-acuminate); Inflorescences: Fruits 1-3 per infructescence, globose or (ob)ovoid, apex to 3 mm beaked, 2-3 by 1.5-2.3 cm, with rusty hairs 0.2-0.3 mm long;
Asia-Tropical: Malaya (Peninsular Malaysia present), Kelantan present, Pahang present, Perak present, Selangor present, Trengganu present
Malesia: Peninsular Malaysia (Perak, Kelantan, Trengganu, Pahang, Selangor).
4 Knema oblongifolia is one of the few species, besides K luteola and K. rubens, with the younger twigs ± flattened in the apical part. 3 Specimens from mountain areas often have conspicuous axillary vegetative buds, rarely found in other Knemas. 2 Especially specimens from lower altitudes have the upper leaf surface with a fine punctate-pitted structure, under magnification reminiscent of the rind of an orange. 1 Fruits are typically up to 3 mm beaked at the apex, subsessile or but shortly stalked.