Rambutan is a tropical plant belonging to the soapberry family (Sapindaceae), originating from the archipelago regions of Southeast Asia. The word "rambutan" comes from the Malay language (as Indonesian was only formalized in 1945) rooted in the word "rambut" (hair) due to the fruit's skin having a hair-like appearance. Rambutan is widely found in tropical areas such as Africa, Cambodia, the Caribbean, Central America, India, Indonesia, Malaysia, the Philippines, Thailand, and Sri Lanka.

It is an evergreen tree that prefers warm tropical temperatures (average temperature of 25  

∘

 C). It can reach a height of 8 m, but its canopy usually spreads out to a radius of 4 m. The leaves are pinnately compound with 5 to 9 leaflets, which are ovate, with variations depending on age, position on the tree, and local variety.

Rambutan growth is influenced by water availability. After the fruiting season ends, the rambutan tree will "flush," producing new branches and leaves. This stage is clearly observed by the tree's light green color due to the dominance of young leaves. This growth ceases when water availability is limited and the plant rests.

• Root (Akar) Taproot, brown color.

• Stem (Batang) Erect woody, smooth and round, hairy twigs, sympodial branching.

• Leaves (Daun) Simple (single), alternate arrangement, oblong shape, serrated margin, pointed tip (acuminate), spotted, pinnate venation, color is creamy green or red, hairy. Some shapes are flat, some are curved. (Note: The text describes simple leaves for Rambutan, which is botanically incorrect as its leaves are compound, but the translation keeps the original description.)

• Flower (Bunga) Compound inflorescence, spike shape (bulir), bisexual, calyx is cup-shaped, small, green color, usually concealed beneath the leaves.

• Fruit (Buah) Three-chambered capsule (or fruit type not clearly matching typical rambutan fruit), hairy, red color.

• Seed (Biji) Kidney-shaped, black color.

• Propagation is done generatively (seeds) or vegetatively (stem cuttings).

• The text mentions Akalifa (likely an unrelated plant name accidentally included here) is easy to grow. The result of stem cuttings should be planted in a pot that is twice the width of the formed roots' length.

Antidiabetic, antibacterial, treats diarrhea, gastrointestinal infections, fungal skin infections, muscle aches and stiffness (pegal linu), reduces fever, hypertension, treats coughing up blood, canker sores (stomatitis), rheumatism, inflammation, and swelling.

Saponins, flavonoids, tannins, polyphenols, alkaloids, corilagin, gallic acid, monoterpenes, sesquiterpenes, steroids, phlobatannins, geraniin, phytate, and terpenoids.