kiwano ("cucumis metuliferus"), also known as horned melon, is a sweet tropical fruit. it is an annual vine in the cucumber and melon family, "cucurbitaceae". it is also called "horned melon" since its fruit has horn-like spines. ripe fruit has orange skin and lime green, jelly-like flesh. kiwano is native to sub-saharan africa. it is now grown in the united states, portugal, italy, germany, chile, australia, and new zealand.