Vatica venulosa Bl., Mus. Bot. Lugd. Bat. 2 (1852)
Latin for 'with fine venation'.

Synonyms
Dryobalanops schefferi Hance, Retinodendron bancanum King, Retinodendron kunstleri King, Vatica bancana Scheff., Vatica kunstleri Brandis, Vatica lutea Ridl., Vatica schefferi Brandis, Vatica schouteniana Scheff., Vatica simalurensis Sloot

Description
Mid-canopy tree up to 35 m tall and 102 cm dbh. Stem with resin. Stipules ca. 5 mm long. Leaves alternate, simple, penni-veined, glabrous. Flower ca. 20 mm in diameter, yellow-red, placed in panicles. Fruit ca. 10 mm long, green-brown, enclosed by five tough elongated calyx lobes.

Ecology
In primary and secondary (logged) forests up to 100 m altitude. On alluvial sites with sandy soils. In secondary forests usually present as a pre-disturbance remnant tree.

Uses
The timber is used.

Distribution
Peninsular Malaysia, Sumatra, Java, Borneo (Sarawak, Brunei, Sabah, West-, Central- and East-Kalimantan).

Local names in Borneo
Rasak, Rasak saluang, Resak, Resak air, Resak kayu api, Resak letop.