Ploiarium alternifolium (Vahl) Melchior, Nat. Pflanzenfam. ed. 2, 21 (1925)

Latin for 'alternate leafs', referring to the position of the leaves along the twigs.

Synonyms
Hypericum alternifolium Vahl

Description
Understorey tree up to 13 m tall and 18 cm dbh. Stipules absent. Leaves alternate, simple, penni-veined, glabrous, margin sometimes slightly toothed. Flowers ca. 22 mm diameter, white-yellow-pink-red, placed solitary. Fruits ca. 15 mm long, red-blue, dehiscent capsules, opening from base to tip.

Ecology
Usually in open places in scrub or disturbed mixed dipterocarp, keranga and swamp forests up to 500 m altitude. Mostly on alluvial sites with sandy soils, but also on hillsides and on clay.

Uses
The wood is used in house construction.

Distribution
Indo-China, Peninsular Malaysia, Sumatra, Borneo (throughout the island).

Local names
Borneo: Cengkodo hutan, Dungohoi, Hingasong, Jingau, Lahumai, Sauma, Saumah, Srumah, Suama.