Cucurbita andreana fruits (top), plant in the middle of the season (middle) and fruits left at the end of the season (bottom). The opaque ones are fruits left on earlier seasons from a different plant on the same place.
Cucurbita andreana is a plant species of the genus Cucurbita. It is native to Argentina. C. andreana fruits are smaller and less palatable than those of C. maxima.
The species Cucurbita maxima originated in South America from wild C. andreana over 4,000 years ago. The two species hybridize quite readily but have noticeably different calcium levels.C. andreana has orange flowers and bright green striped fruit. It prefers full sun and well drained soil. Extrafloral nectaries are present in C. maxima but not necessarily in C. andreana.
^ abNee, Michael (1990). "The Domestication of Cucurbita (Cucurbitaceae)". Economic Botany (New York: New York Botanical Gardens Press) 44 (3, Supplement: New Perspectives on the Origin and Evolution of New World Domesticated Plants): 56–68. JSTOR4255271.edit