Nephelium subfalcatum Radlk., Rec. Bot. Surv. India 3 (1907)
Latin for 'sickle-shaped'.

Description
Mid-canopy tree up to 31 m tall and 44 cm dbh. Stipules absent. Leaves alternate, compound, leaflets penni-veined, glabrous. Flowers ca. 3 mm diameter, yellowish, placed in panicles. Fruits ca. 33 mm long, green-red, long spiny drupes.

Ecology
In undisturbed mixed dipterocarp forests up to 200 m altitude. On hillsides and ridges with sandy to clay soils. In secondary forests usually present as a pre-disturbance remnant.

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

Local names in Borneo
Melanyau, Mertapang, Rambutan.