Tree 3-10 m. Leaves chartaceous or thinly coriaceous, elliptic-oblong to lanceolate, 13-25 by 3-6 cm, base narrowly rounded or cuneate, apex acute-acuminate; Inflorescences:
Asia-Tropical: Borneo present, C Sarawak present, West-Central Kalimantan present
Malesia: Borneo (C Sarawak: 4th Div.; West-Central Kalimantan).
Knema longepilosa is readily recognized by the conspicuous dense and long indumentum of the sterile apical leaf buds, twig apex, petioles, and flowers. It resembles the Malayan K. plumulosa, which differs in the mammillate staminal disc and by a disc around the base of the androphore.