Dysoxylum rugulosum King, J. As. Soc. Beng. 64, 2 (1895)
Latin for 'finely ribbed'.

Synonyms
Dysoxylum fulvum Airy Shaw, Dysoxylum undulatum Hend.

Description
Understorey tree up to 18 m tall and 39 cm dbh. Stipules absent. Leaves alternate, compound, leaflets penni-veined, glabrous. Flowers ca. 15 mm diameter, yellowish, placed in racemes. Fruits ca. 24 mm diameter, orange-red, fleshy, dehiscent capsule.

Ecology
In undisturbed mixed dipterocarp and sub-montane forests up to 2200 m altitude. On hillsides and ridges, but also on alluvial sites near or along rivers and streams. On sandy to ultramafic soils, but also on clay. In secondary forests usually present as a pre-disturbance remnant.

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

Local names in Borneo
Segarah, Segera.