Madhuca korthalsii (Pierre ex Burck) H.J.Lam, Bull. Jard. Bot. Buitenz. 3, 7 (1925)

Synonyms
Bassia braceana King & Gamble
Bassia braceana var. lanceolata King & Gamble
Brassia korthalsii Pierre ex Burck
Illipe korthalsii (Pierre ex Burck) Engl.
Kakosmanthus korthalsii (Pierre ex Burck) Pierre ex Dubard
Madhuca korthalsii var. lanceolata (King & Gamble) H.J.Lam
Vidoricum korthalsii (Pierre ex Burck) Kuntze

Description
Mid-canopy tree up to 39 m tall and 52 cm dbh. Stem with white sap. Stipules ca. 2 mm long. Leaves alternate, simple, penni-veined, glabrous. Flowers ca. 8 mm diameter, white-yellow, placed in axillary bundles. Fruits ca. 20 mm long, brownish, drupes.

Ecology
In undisturbed mixed dipterocarp forests up to 500 m altitude. Mostly on ridges and hillsides with sandy, clay and limestone soils. In secondary forests usually present as a pre-disturbance remnant.

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

Local names
Borneo: Katiau, Katiau senam, Katiau tanduk, Kayu pak peting, Liliran, Nyatoh.