Gem squash (Cucurbita pepo var. pepo) is a variety of summer squash that may have been domesticated from two wild varieties; Cucurbita texana found in the southern and central United States and Cucurbita fraterna found in Mexico. The dark green spherical fruit, when fully ripe, is about the size of a tennis ball. The young fruit is often harvested before it is fully ripe when it has a more delicate texture flavor.
- Paris, H. S. "Characterization of the Cucurbita pepo collection at the Newe Ya'ar Research Center, Israel". Plant Genetics Resources Newsletter. Retrieved January 31, 2015.
- Sauer, Jonathan D. (1993). Historical geography of crop plants - a select roster. Boca Raton, Florida: CRC Press. ISBN 0849389011.
- "Table 7-126". Biodiversity International. Retrieved January 31, 2015.