Nephelium cuspidatum var. bassacense (Pierre) Leenh.

Twigs 4-10 mm in diam., densely tomentose but often rather early glabrescent. Petiolules 2-6 mm long, above broadly shallowly grooved, with or without a median rib. Leaflets 4-8.5 cm broad, index 1.5-4, the sides curved to nearly straight and parallel; apex not or sometimes slightly acuminate; midrib above prominulous to sunken, nerves above prominulous to flat, intercalated veins mostly few and feeble, reticulum above rather lax. Inflorescences pseudoterminal to terminal. Sepals connate up to c. 10%, 1.3-2 mm long. Petals absent. Fruit appendages dense, filiform, broadened at base, up to 1.5 cm long.

A tropical plant. It grows in evergreen tropical forests below 400 m altitude. It is light demanding. It does well on thick, well-drained soil.

The fruit is sour, sweet and eaten.