Purple mangosteen + Horned melon

The purple mangosteen (Garcinia mangostana), colloquially known simply as mangosteen, is a tropical evergreen tree believed to have originated in the Sunda Islands and the Moluccas of Indonesia. It grows mainly in Southeast Asia, and also in tropical South American countries such as Colombia, in the state of Kerala in India and in Puerto Rico, where the tree has been introduced. The tree grows from 6 to 25 m (19.7 to 82.0 ft) tall. The fruit of the mangosteen is sweet and tangy, juicy, somewhat fibrous, with fluid-filled vesicles (like the flesh of citrus fruits), with an inedible, deep reddish-purple colored rind (exocarp) when ripe. In each fruit, the fragrant edible flesh that surrounds each seed is botanically endocarp, i.e., the inner layer of the ovary. Seeds are almond-shaped and sized.

The horned melon, also called African horned cucumber or melon, jelly melon, hedged gourd, English tomato, melano, kiwano, or cherie, is an annual vine in the cucumber and melon family. It is considered to be the ancestor of the other cultivated melons. Often known by its nickname in the southeastern United States, blowfish fruit, it is grown for its fruit, which looks like an oval melon with horn-like spines. The fruit of this plant is edible, but it is used as often for decoration as for food. When ripe, it has a yellow-orange skin and a lime green jelly-like flesh with a tart taste, and texture similar to a cucumber. The horned melon is native to Africa, and it is now grown in California, Chile, Australia and New Zealand as well. [Wikipedia]