Citron melon

The citron melon, Citrullus caffer, is a relative of the watermelon, also called Citrullus lanatus var. citroides and Citrullus amarus, fodder melon, preserving melon, red-seeded citron, jam melon, stock melon, Kalahari melon or tsamma melon. It is in the family Cucurbitaceae which consists of various squashes, melons, and gourds. Its fruit has a hard white flesh, rendering it less likely to be eaten raw; more often it is pickled or used to make fruit preserves, and is used for cattle feed. It is especially useful for fruit preserves, because it has a high pectin content.