Plants of Borneo

Rambutan

Nephelium lappaceum

Rambutan is a Sapindaceae tree with pinnate leaves and fruit covered in soft hair-like projections. The familiar red or yellow exterior surrounds a white, juicy seed covering.

Botanical details
Species
Nephelium lappaceum
Genus
Nephelium
Family
Sapindaceae
Rambutan — Nephelium lappaceum
Rambutan (Nephelium lappaceum).VoDeTan2 Dericks-Tan · Wikimedia Commons · CC BY-SA 3.0 · Original

Appearance & recognition

Rambutan is a Sapindaceae tree with pinnate leaves and fruit covered in soft hair-like projections. The familiar red or yellow exterior surrounds a white, juicy seed covering. That edible tissue is not the seed itself. Its native range includes the Malesian region, and cultivation brings forest fruit diversity into orchards and home gardens across Borneo.

Sources & references · 1National Parks Board Singapore · Nephelium lappaceum — Flora & Fauna Web

Flowers, fruits & reproduction

Small flowers occur in branching clusters and attract insects. Fruit set therefore begins with a process easily overlooked beside the colourful harvest. The sweet, translucent flesh is eaten fresh, while peel and seed are separated. Rambai may share a market stall and a similar-sounding name, but belongs to Phyllanthaceae and is a different fruit tree.

Sources & references · 1National Parks Board Singapore · Nephelium lappaceum — Flora & Fauna Web

Ecological relationships

Rambutan appears among the Bornean orangutan food plants studied in Wehea–Kelay. The regional paper confirms the plant-level association, but its laboratory bark sampling does not establish the part eaten by the apes.

Sources & references · 1IOP Conference Series: Earth and Environmental Science · Antimicrobial, antioxidant and phytochemical activities of orangutan food plants in Wehea-Kelay

Sources & references

National Parks Board Singapore · Nephelium lappaceum — Flora & Fauna WebAccessed: 2026-10-04

IOP Conference Series: Earth and Environmental Science · Antimicrobial, antioxidant and phytochemical activities of orangutan food plants in Wehea-KelayAccessed: 2026-10-04

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