(Cucurbita foetidissima), perennial prostrate vine of the gourd family (Cucurbitaceae), native to southwestern North America. A calabazilla has triangular, long-stalked, finely toothed leaves, yellow flowers about 6.3 to 10.2 cm (2.5 to 4 inches) wide, and inedible, orange-shaped, predominantly green fruits with yellow stripes and markings. Although an unattractive plant with a fetid odour, the calabazilla is grown as an ornamental for its colourful fruits, and its seeds are rich in both oil and protein.