Tree 10-25 m. Leaves chartaceous to thinly coriaceous, obovate-oblong to oblong-lanceolate, 25-55 by 7-15 cm, apex acute-acuminate, base broadly or narrowly rounded, subcordate, or (sub)attenuate; Inflorescences: Fruits 1-3 per infructescence, obovoid-oblong or long-ellipsoid, obtuse to acute at both ends, apex often up to 5 mm beaked, 5-8 by 3-4 cm, with dense chocolate hairs 0.2 mm long;
Asia-Tropical: Borneo present (Brunei present, Sabah present, Sarawak present), Central E Kalimantan present
Malesia: Borneo (Sarawak, Brunei, Sabah, Central E Kalimantan).
Sinclair (1. c.) erroneously included Jaheri 611, the only male specimen known to him when describing K. ashtonii. Since then, S 23449 (identical with the type) has been collected, with good male flowers, quite different from those of Jaheri 611, which is described as K. sérieea.