Winter melon (fatmelon; white fuzzy vegetable). Botanical classification: angiosperm, Dicotyledon, cucurbitales, Cucurbitaceae, gourd genus Benincasa Savi annual herb. The melon is shaped like a pillow, also called pillow melon, which is produced in summer. Why is the melon produced in summer named winter melon? This is because when the melon is ripe, there is a layer of white powder on the surface, which is like hoarfrost in winter. For this reason, winter melon is also called white melon.