Moultonianthus leembruggianus (Boerl. & Koord.) Steenis, Bull. Bot. Gard. Buitzg. Ser. III, 17 (1948)

Named after W.G. Leembruggen [1845-1913], a Dutch curator at Bogor Herbarium.

Erismanthus leembruggianus Boerl. & Koord.
Moultonianthus borneensis Merr.

Sub-canopy tree up to 27 m tall and 32 cm dbh. Stipules leaf-like, ca. 30 mm long. Leaves opposite, simple, penni-veined, glabrous, margins slightly toothed. Flowers ca. 14 mm diameter, white-yellow, placed in long thyrses. Fruits ca. 11 mm diameter, green-brown, hairy, dehiscent capsules.

In undisturbed mixed dipterocarp forests up to 600 m altitude. Often along rivers, but also common on lower hillsides. On clay soils. In secondary forests usually present as a pre-disturbance remnant tree.

Sumatra(?), Borneo (Sarawak, Brunei, Sabah, West-, Central- and East Kalimantan), Philippines.

Local names
Borneo: Pangkal telinga gajah, Ulas, Ulas bukit, Ulas-ulas.