Ptychopyxis arborea (Merr.) Airy Shaw, Kew Bull. 14 (1960)

Latin for 'tree-like'.

Mallotus arboreus Merr.

Upper canopy tree up to 50 m tall and 75 cm dbh. Leaves alternate, simple, penni-veined, hairy below, long pulvinate petioles. Flowers ca. 5 mm diameter, green-yellowish, placed in racemes. Fruits ca. 40 mm diameter, green-yellow-brown, fleshy drupe. Seeds with sweet aril.

In undisturbed mixed dipterocarp and sub-montane forests up to 1600 m altitude. Mostly on hillsides and ridges with clay to sandy soils. Also common on limestone. In secondary forests usually present as a pre-disturbance remnant tree.

Fruits are edible.

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

Local names
Borneo: Lebui, Luagan-luagan, Marjilawat, Perupuk batu.