Polyalthia lateriflora (Blume) King, J. Asiat. Soc. Bengal, Pt. 2, Nat. Hist. 43 (1874)
(Latin for 'sideward flowers')

Synonyms
Guatteria lateriflora Blume; Monoon lateriflora (Blume) Miq.

Description
Upper canopy tree up to 42 m tall and 33 cm dbh. Stipules absent. Leaves alternate, simple, penni-veined. Flowers with ca. 55 mm long petals, yellow, placed on the stem. Fruitlets ca. 24 mm long, red-purple, placed in apocarp, fruitlets 1-seeded.

Ecology
Undisturbed lowland forests up to 333 m altitude. Usually in mixed dipterocarp forest, rarely in peat swamp forest. Often on sandy soils, rarely on limestone. Growing on hillsides and ridges. In secondary forests usually present as a pre-disturbance remnant.

Distribution
Thailand, Peninsular Malaysia, Sumatra, Java, Borneo (Sarawak, Sabah, West- and East-Kalimantan), Lesser Sunda Islands, Celebes, Moluccas and New Guinea.

Local names in Borneo
Banitan, Semukau.