Watermelon (Citrullus lanatus var. lanatus, family Cucurbitaceae) is a vine-like (scrambler and trailer) flowering plant originally from southern Africa. It is a large, sprawling annual plant with coarse, hairy pinnately-lobed leaves and white to yellow flowers. It is grown for its large edible fruit, also known as a watermelon, which is a special kind of berry with a hard rind and no internal division, botanically called a pepo. The fruit has a smooth hard rind—usually green with dark green stripes or yellow spots—and a sweet, juicy interior flesh—usually deep red to pink, but sometimes orange, yellow, or white—with many seeds, which can be soft and white or hard and black. Considerable breeding effort has been put into disease-resistant varieties and into developing a "seedless" strain with only digestable white seeds. Many cultivars are available, producing mature fruit within 100 days of planting the crop. The fruit can be eaten raw, pickled or the rind cooked.