Cucurbita argyrosperma

Cucurbita argyrosperma, also called the cushaw squash 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.

It is a Cucurbita species, with varieties that are commonly cultivated in the United States as part of the Eastern Agricultural Complex and Mexico south to Nicaragua. Of all the cultivated Cucurbita species it is the least found outside the Americas. It originated in Mesoamerica, most likely in the state of Jalisco, Mexico from its wild sororia form. The reference genome of this species was published in 2019.