Lithocarpus bancanus (Scheff.) Rehd., J. Arn. Arb. 10 (1929)
Named after 'Bangka', an island between Sumatra and Borneo where the species occurs.

Synonyms
Lithocarpus rajah (Hance) A.Camus, Lithocarpus scyphigera var. riedelii (King) A.Camus, Pasania bancana (Scheff.) Markgr., Pasania rajah (Hance) S.Moore, Quercus bancana Scheff., Quercus rajah Hance, Quercus scyphighera var. riedelii King, Synaedrys bancana (Scheff.) Koidz., Synaedrys rajah (Hance) Koidz.

Description
Mid-canopy tree up to 38 m tall and 99 cm dbh. Stipules ca. 1 mm long. Leaves alternate, simple, penni-veined, glabrous, venation inconspicuous. Flowers ca. 3 mm diameter, green-grey, placed in racemes. Fruits ca. 14 mm long, green, base of nut enclosed by cupule.

Ecology
In undisturbed mixed dipterocarp forests up to 800 m altitude. Mostly on hillsides and ridges with sandy to clay soils. In secondary forests usually present as a pre-disturbance remnant tree.

Distribution
Peninsular Malaysia, Sumatra, Borneo (Sarawak, Brunei, Sabah, Central- and East-Kalimantan).

Local names in Borneo
Mempening, Pampaning.