Hydnocarpus anomala (Merr.) Sleumer, Bot. Jahrb. 69 (1926)
Latin for 'deviating'.

Synonyms
Hydnocarpus lasionema Airy Shaw, Taraktogenos anomala Merr.

Description
Upper-canopy tree up to 45 m tall and 82 cm dbh. Stipules dropped early. Leaves alternate, simple, penni-veined, glabrous to hairy below. Flowers ca. 13 mm diameter, white-yellow, placed in cymes. Fruits ca. 68 mm diameter, brownish, berry/capsule.

Ecology
In undisturbed mixed dipterocarp forests up to 500 m altitude. Often on hillsides and ridges, but also common along rivers. In secondary forest usually present as a pre-disturbance remnant tree.

Uses
Locally used for house construction.

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

Local names in Borneo
Jangan, Jaui, Karpus, Kayu ulan, Oparan bukit, Pajang balaan, Tetek.