Gonystylus consanguineus Airy Shaw, Kew Bull. 17 (1964)

Latin for 'similar blood', referring to its close relationship with Gonystylus affinis and Gonystylus borneensis.

Upper canopy tree up to 41 m tall and 55 cm dbh. Stipules absent. Leaves alternate, simple, penni-veined but venation inconspicuous, hairy. Flowers ca. 14 mm diameter, brownish, placed in short panicles. Fruits ca. 44 mm diameter, green-brown, dehiscent capsule, exposing seeds with white aril.

In undisturbed mixed dipterocarp forests up to 400 m altitude. Mostly on hillsides with sandy soils. Also on limestone. In secondary forests usually present as a pre-disturbance remnant.

The fruits are used as fish poison.

Borneo (Sarawak, Sabah, West- and East-Kalimantan).

Local names
Borneo: Bidaru, Ramin, Tempe-eng.