Botany
Katmon is a tree reaching a height of 6 to 15 meters, smooth or nearly so. Leaves are leathery, shining, ovate, elliptic or oblong-ovate, 12 to 25 centimeters long, and coarsely toothed at the margins. Flowers are white, large, soft, fleshy, and green, 6 to 8 centimeters in diameter, with large fleshy sepals tightly enclosing the true fruit.

Distribution
- According to Quisumbing's compilation, found only in the Philippines, in forests, at low and medium altitudes.

Properties
Leaves and bark are laxative and astringent.

Parts utilized
Fruit, leaves, bark.

Uses
Edibility
• Fruit contains a soft, fleshy, green and edible pulp, with the flavor of a green, sour apple.
• Used for making sauces and jams; also used for flavoring fish.
• Fruit when cooked, used as vegetable.
Folkloric
• The acid juice of the fruit, mixed with sugar, is used for coughs.
• Fruit decoction used for cough.
• Also employed for cleansing the hair.
• In Sabah, young leaves or stem bark pounded and applied as paste on swellings and wounds.
• Elsewhere, sugared fruit juice used as cooling beverage for fevers; also, as cardiotonic.
• Leaves and bark used as laxative and astringent.
Others
• Red dye: A red dye is obtained from the tree bark.

Availability
Wild-crafted.