Horsfieldia crassifolia (Hook.f. & Thomson) Warb., Mon. Myrist. (1897)
Latin for 'thick leaves'.

Synonyms
Horsfieldia fulva var. paludicola (King) Warb., Myristica crassifolia Hook.f. & Thomson, Myristica irya var. crassifolia Miq. ex Hook.f., Myristica paludicola King

Description
Upper canopy tree up to 41 m tall and 36 cm dbh. Stem with red sap. Stipules absent. Leaves alternate, simple, penni-veined, hairy below. Flowers ca. 2 mm diameter, white-yellow, placed in panicles. Fruits ca. 19 mm long, yellowish, glabrous, dehiscent capsule. Seeds with entire aril.

Ecology
In undisturbed (peat)-swamp and keranga forests up to 200 m altitude. Usually in alluvial sites with sandy soils. In secondary forests usually present as a pre-disturbance remnant.

Distribution
Thailand, Peninsular Malaysia, Sumatra, Borneo (throughout the island).

Local names in Borneo
Darah-darah, Kumpang, Kumpang burung, Kumpang paya, Mandarahan.