Botany
Small tree growing 5 to 12 meters high. Leaves are pinnate, 20-60 cm long, with hairy rachis and leaflets. Leaflets are opposite, 10 to 17 pairs, oblong, 5 to 10 cm in length. Flowers, about 1.5 cm long, and slightly fragrant. Fruit, green and edible, about 4 cm long, subcylindric with 5 obscure, broad, rounded, longitudinal lobes.

Distribution
Cultvated and semi-cultivated throughout the Philippines.

Parts utilized
Whole plant.

Properties
Coonsidered antibacterial, astringent, antiscorbutic, febrifuge, antidiabetic, stomachic, refrigerant.

Uses
Nutrition
Eaten raw.
Prepared as a relish and food flavoring.
Folkloric
· Skin diseases, especially with pruritus: Reduce the leaves to a paste and apply tolerably warm to areas of affected skin.
· Fruit juice used as eye drops.
· Post-partum and rectal inflammation: Infusion of leaves.
· Mumps, acne, and localized rheumatic complaints: Paste of leaves applied to affected areas.
· Warm paste of leaves also used for pruritus.
· Used for boils, piles, rheumatism, cough, hypertension, whooping cough, mumps and pimples.
· Cough and thrush: Infusion of flowers, 40 grams to a pint of boiling water, 4 glasses of tea daily.
· Fever: Fruit as a cooling drink.
· The fruit has been used for a variety of maladies: beriberi, cough, prevention of scurvy.
· Infusion of leaves also drank as a protective tonic after childbirth.
- In Malaysia, leaves are used for venereal diseases.
· In Indonesia, leaves used for boils, diabetes, mumps, fever.
· In French Guyana, fruit decoction or syrup use for hepatitis, diarrhea, fever and other inflammatory conditions.
Others
· Because of high oxalic acid content, fruit used to remove stains from clothing and for washing hands, removing rust and stains from metal blades.
Studies
• Effects of Averrhoa bilimbi leaf extract on blood glucose and lipids in streptozotocin-diabetic rats: Study showed that AB extract has hypoglycemic, hypotriglyceridemic, anti-lipid peroxidative and anti-atherogenic properties in STZ-diabetic rats.
• Antioxidant And Antimicrobial Activities Of Averrhoa carambola L. Fruits: The scavenging of NO by the extract was dependent on concentration and stage of ripening. Extracts showed antimicrobial activity against E coli, Salmonella typhi, staph aureus and bacillus cereus.

Availability
Wildcrafted.
Seasonal fruiting.