Aranis trees grow in the tropics and subtropics. It is a recent introduction to many of the Pacific Islands and has become naturalised in Vanuatu. There are four varieties of Aranis in Vanuatu. The tree grows to 12 m and often has spiny stems. It can have multiple flowering periods in the tropics, including year-round. It is a very good source of Vitamin C.
Leaves are 10 cm in length and dark green. The shape is elliptic (a flattened oval) to ovate (egg-shaped), with the margins irregularly crenate (scalloped margin) or crenulate (serrated margin).
Flowers are fragrant, white and 2 to 3 cm in diameter.
Fruits are generally 8 to 10 cm in diameter but can be smaller or larger. The fruit is mildly sweet to sweet. The peel is greenish yellow to bright orange. A thick skin adheres to the flesh of the fruit.
When to Look
Where to Look
All citrus have dark green and waxy leaves and sweet-smelling flowers. They can be differentiated by their fruit.
Similar orange species are the Wild Orange (C. macroptera) and the Sour Orange (C. aurantium). The Wild Orange grows to 5 m and is spiny, while the Sour Orange grows to 10 m and has short spines. The fruit of the Wild Orange is 6 to 7 cm in diameter and tastes acidic and bitter. The fruit of the Sour Orange is 5 cm in diameter and is very sour.