Polyalthia glauca (Hassk.) F.Muell., Desc. Notes Papuan Pl. App. 95 (1877)

(Latin for 'blue-greenish')

Synonyms
Monoon glaucum (Hassk.) Miq.
Uvaria glauca Hassk.

Description
Mid-canopy tree up to 36 m tall and 61 cm dbh. Stipules absent. Leaves alternate, simple, penni-veined, glaucus on lower surface. Flowers with ca. 33 mm long petals, pale yellow to cream, fragrant, placed on the branches below the leaves. Fruitlets ca. 15 mm long, red-purple, placed in apocarp, fruitlets 1-seeded.

Ecology
In undisturbed forests up to 950 m altitude, but usually below 300 m. Usually in mixed dipterocarp forests, but ocassionally in peat swamp and submontane forests. Mostly on hillsides and ridges on sandy to clayey soils. In secondary forests usually present as a pre-disturbance remnant.

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

Local names
Borneo: Balikan putih; Bin(g)hut; Dilah Saie; Djilu; Kembalikan putih; Lirap; Samukau; Sirap.