Leaves (thickly) coriaceous, elliptic-oblong to oblong-lanceolate, 4-21 by 1.5-7 cm, sometimes broadest below the middle, base rounded to attenuate, apex acute; Inflorescences sessile. Fruits 3-4.2(-4.5) by 2-2.8 cm;
Asia-Tropical: Borneo present (Brunei present, Sabah present, Sarawak present), W and S Kalimantan present
Malesia: Borneo (Sarawak, Brunei, Sabah, W and S Kalimantan).
1 Specimens may resemble K. kinabaluensis, and can easily be noticed by lacking minute dots on the upper and lower leaf surface. 2 S 27923 (Ilias Paie), Sarawak, differs in thinly (not thickly) coriaceous leaves and proportionally long fruiting pedicels 7-9(-12) mm. De Vogel 851, from S Kalimantan at c. 250 m altitude, has chartaceous leaves, non-striate twigs, with the staminal disc somewhat convex, not flat. Dransfield JD 7129 (male flowers with 7 anthers) and Prance 30585 (11 anthers), both from Brunei, have leaves glabrescent underneath; they may represent a separate taxon.