Syzygium mappaceum (Korth.) Merr. & Perry, Mem. Amer. Ac. 39 (1939)
Latin for 'similar to Mappa', a genus in the Euphorbiaceae.

Synonyms
Eugenia formosa King, Eugenia lilacina Merr., Eugenia nemoricola Ridl., Eugenia pseudoformosa King, Jambosa insignis Blume, Jambosa lancifolia Miq., Jambosa mappacea Korth., Syzygium formosum (King) Masamune, Syzygium insigne (Blume) Merr. & Perry, Syzygium lilacinum (Merr.) Merr. & Perry, Syzygium pseudoformosum (King) Merr. & Perry

Description
Understorey tree up to 12 m tall and 15 cm dbh. Stipules absent. Leaves opposite, simple, penni-veined, venation conspicuous, glabrous. Flowers ca. 40 mm diameter, white-pinkish, with protruding stamens, flowers placed in clusters. Fruits ca. 25 mm diameter, green?, fleshy berries.

Ecology
In undisturbed mixed dipterocarp forests up to 300 m altitude. Usually along streams and rivers on sandy to clay soils. In secondary forests usually present as a pre-disturbance remnant.

Distribution
Thailand, Peninsular Malaysia, Sumatra, Java, Borneo (Brunei, Sabah, East-Kalimantan).