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
Borneo: Banitan, Semukau.