Alangium ridleyi King, J. As. Soc. Beng. 71, II (1902)

(named after Henry Nicholas Ridley [1855-?], an English Botanist)

Marlea costata Valeton [Illegitimate]

Mid-canopy tree up to 33 m tall and 66 cm dbh. Twigs glabrous. Stipules absent. Leaves alternate, simple, penni-veined. Flowers ca. 27 mm in diameter, white, placed in small panicles in leaf axils, long and narrow petals curved downward, exposing stamens. Fruits ca. 24 mm in length, red to purplish coloured, fleshy drupe. Seeds with white aril (edible).

Mainly in undisturbed mixed dipterocarp forests. In secondary forests usually present as pre-disturbance remnant. Growing along rivers, on hillsides and ridges, up to 350 m altitude (100% of collections from 0-500 m).

Indochina, Thailand, Malay Peninsula, Sumatra and Borneo (Sarawak, Sabah and East Kalimantan).

Local names
Borneo: Lajik kuning; Medong.