Casearia kostermansii Sleum., Blumea 7 (1954)

Named after A.J.G.H. Kostermans [1907-?], a Dutch botanist.

Shrub up to 4 m tall. Stipules small and dropped early. Leaves alternate, simple, penni-veined, glabrous. Flowers ca. 8 mm diameter, green-yellow, placed in axillary bundles. Fruits ca. 22 mm diameter, yellow-orange, fleshy, dehiscent capsules filled with many small seeds which are surrounded by red pulp.

In undisturbed mixed dipterocarp forests up to 100 m altitude. On hillsides and ridges with sandy soils. In secondary forests usually present as a pre-disturbance remnant tree.

Borneo (South- and East-Kalimantan).