Tree 3-10(-20) m. Leaves chartaceous to thinly coriaceous, at first with dense indumentum, early glabrescent, elliptic to (ob)lanceolate, 15-50 by 4.5-16(-20) cm, apex (sub)obtuse to acute(-acuminate), base obtuse, rounded, subtruncate, or rarely subcordate; Inflorescences: Fruits 1-6 per infructescence, ellipsoid, (2-)2.5-3.5(-4.5) by 1.5—2.5(—3.5) cm, with coarse hairs 1-2 mm long, dry pericarp 2-4 mm thick;
Asia-Tropical: Borneo present (Sabah present, Sarawak present), Lundu district present
Malesia: Borneo (Sarawak: frequently collected in the Lundu district, IstDiv.; Sabah).
2 SAN 9957, from Sabah, has extremely large male buds, 7 by 5.5 mm, with coarse hairs 1-5(-2) mm long; anthers 13. 1 Knema lunduensis is related to K. latericia, K. furfuracea, and K. per-coriacea and is more or less intermediate between the first two species mentioned. Knema latericia generally has a more slender habit, with smaller leaves, often a convex or mam-millate staminal disc, and smaller fruits with shorter indumentum; K. furfuracea has cordate leaf bases, though the leaf base in K. lunduensis is occasionally subcordate in larger leaves; K. percoriacea has a differing general habit, with more coriaceous leaves. Some specimens included in K. lunduensis come close to certain stout, large-fruited forms of K. latericia subsp. ridleyi.