Winter squash

Squash harvested and eaten in mature stage; skin hardened into tough rind

Winter squash is an annual fruit representing several species of squash within the genus Cucurbita – odd-shaped, rough or warty, late-growing varieties, less symmetrical, small to medium in size, but with long-keeping qualities and hard rinds. They differ from summer squash in that they are harvested and eaten in the mature stage when their seeds within have matured fully and their skin has hardened into a tough rind. At this stage, most varieties of this fruit can be stored for use during the winter.

From Wikipedia, under CC BY-SA. More on occurri.