Gordonia borneensis H.Keng, Gard. Bull. Sing. 37, 1 (1984)

Description
Upper canopy tree up to 41 m tall and 71 cm dbh. Bark scaling off profusely in 1cm wide, 2mm thick, light strips, palebrown. Living bark dark beefy red, inside brown, 6mm thick. Stipules absent. Leaves alternate, simple, penni-veined but venation barely visible, glabrous, margin slightly toothed. Flowers ca. 56 mm diameter, white-yellow to bright yellow, solitary in leaf axils. Fruits ca. 24 mm long, green-yellow, dehiscent capsules with many winged seeds.

Ecology
In undisturbed mixed dipterocarp and sub-montane forests up to 1300 m altitude. Mostly on hillsides and ridges, but also on alluvial sites. On sandy soils. In secondary forests usually present as a pre-disturbance remnant.

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

Local names
Borneo: Obah, Pusuh, Rawali batu.