Cucurbita argyrosperma

Cucurbita argyrosperma, also the Japanese pie pumpkin or pipian, cushaw pumpkin, and silver-seed gourd, is a species of winter squash originally from the south of Mexico. This annual herbaceous plant is cultivated in the Americas for its nutritional value: its flowers, shoots, and fruits are all harvested, but it is cultivated most of all for its seeds, which are used for sauces. It was formerly known as Cucurbita mixta.