Mastixia pentandra Bl., Bijdr. (1826)
Latin for 'with five male parts'.

Synonyms
Mastixia alternifolia Merr. & Chun, Mastixia arborea [non (Whight) Bedd.] Clarke, Mastixia cambodiana Pierre, Mastixia chinensis Merr., Mastixia megacarpa Ridl., Mastixia parvifolia Hall., Mastixia philippinensis Wangerin, Mastixia poilanei Tardieu, Mastixia scortechinii King, Mastixia subcaudata Merr.

Description
Mid-canopy tree up to 37 m tall and 75 cm dbh. Stipules absent. Leaves alternate, simple, penni-veined. Flowers ca. 5 mm in diameter, white-yellowish, placed in branched inflorescences. Fruits ca. 30 mm long, blue-purple-black, fleshy drupe.

Ecology
In undisturbed forests up to 2700 m altitude. On hillsides and ridges with sandy soils. In secondary forests usually present as a pre-disturbance remnant tree.

Distribution
Sri Lanka, India, Indo-China, Birma, Thailand, Peninsular Malaysia, Sumatra, Java, Borneo (Brunei, Sabah, West-, Central- and East-Kalimantan), Philippines, Celebes, Moluccas.

Local names in Borneo
Kayu wulu, Medang serujan.