Aporosa grandistipula Merr., Philip. J. Sci. 21 (1922)
Latin for 'with large stipules'.

Description
Understorey tree up to 14 m tall and 20 cm dbh. Stipules ca. 18 mm long, curved. Leaves alternate, simple, penni-veined, glabrous, sometimes margin slightly toothed. Flowers ca. 0.3 mm in diameter, green-yellow, placed in racemes. Fruits ca. 12 mm long, yellow-orange-red, dehiscent capsule, seeds with orange aril.

Ecology
In undisturbed mixed dipterocarp forest up to 400 m altitude. Mostly on alluvial sites, i.e. floodplains and riverbanks. On clay to sandy soils, also on limestone. In secondary forests usually present as a pre-disturbance remnant tree.

Uses
Fruits are edible.

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

Local names in Borneo
Boata, Bua bae, Galang-galang, Kayu massam, Ketune, Mantus, Ulas.