Maasia sumatrana (Miq.) Mols, Kessler & Rogstad, Syst. Bot. 33: 493 (2008)

(Latin for 'of Sumatra')

Guatteria sumatrana Miq.
Monoon sumatranum (Miq.) Miq.
Polyalthia sumatrana (Miq.) Kurz

Sub-canopy tree up to 23 m tall and 25 cm dbh. Stipules absent. Leaves alternate, simple, penni-veined, glaucous below. Flowers with ca. 38 mm long petals, white-yellowish, placed on the twigs. Fruitlets ca. 19 mm long, pink-red-purple, placed in apocarp, fruitlets 1-seeded.

In undisturbed forests up to 700 m altitude. Usually in mixed dipterocarp forests, but occasionally also in keranga forests. In alluvial sites, on hillsides and ridges, along rivers and on alluvial sites. Usually on clayey sand soils, but also found on ultrabasic soils. In secondary forests usually present as a pre-disturbance remnant.

Thailand, Peninsular Malaysia, Sumatra, Java and Borneo (all over the island).

Local names
Borneo: Buah sasak; Dilah; Dilah saie; Dilasai; Pisang-pisang; Pisang-pisang putih; Selaut.