Cucurbita cordata is a species of flowering plant in the squash family.[2][3] It is similar to Cucurbita californica, Cucurbita cylindrata, Cucurbita digitata, and Cucurbita palmata and all these species hybridize readily.[4] These species form the only restricted xerophyte species group in the genus Cucurbita. Each member of this species group is native to the Southwestern United States and Northwestern Mexico where they are relatively uncommon. Each group member is found in hot, arid regions with low rainfall. They prefer soil that is loose, gravelly, and well-drained. C. cordata is found only in the vicinity of Bahía de los Ángeles, Baja California. Botanists Bemis and Whitaker suggest that C. cordata and C. cylindrata may be a case of sympatric speciation. The juvenile leaves of C. cylindrata, C. cordata, C. digitata, and C. palmata show a high degree of similarity, but their mature leaves are visibly different, as are their root structures. C. cordata fruits are gray green, striped, and round.[5]
| Cucurbita cordata | |
|---|---|
Scientific classification 
| |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Rosids |
| Order: | Cucurbitales |
| Family: | Cucurbitaceae |
| Genus: | Cucurbita |
| Species: | C. cordata
|
| Binomial name | |
| Cucurbita cordata | |
It was first identified by Sereno Watson in 1889.[3]
References
edit- ^ Sánchez de la Vega, G.; Castellanos Morales, G.; Contreras, A.; Aragón Cuevas, F.; Lira Saade, R. (2019). "Cucurbita cordata". IUCN Red List of Threatened Species. 2019: e.T109928550A109928555. doi:10.2305/IUCN.UK.2019-2.RLTS.T109928550A109928555.en. Retrieved 18 November 2021.
- ^ "Cucurbita cordata". Germplasm Resources Information Network. Agricultural Research Service, United States Department of Agriculture. Retrieved September 27, 2013.
- ^ a b Nee, Michael (1990). "The Domestication of Cucurbita (Cucurbitaceae)". Economic Botany. 44 (3, Supplement: New Perspectives on the Origin and Evolution of New World Domesticated Plants). New York: New York Botanical Gardens Press: 56–68. Bibcode:1990EcBot..44S..56N. doi:10.1007/BF02860475. JSTOR 4255271.
- ^ Puchalski, J. T.; Robinson, R. W. (1978). "Comparative Electrophoretic Analysis of Isozymes in Cucurbita Species". Cucurbit Genetics Cooperative Report. 1. Raleigh, NC: North Carolina State University: 28.
- ^ Bemis, W. P.; Whitaker, Thomas W. (April 1969). "The Xerophytic Cucurbita of Northwestern Mexico and Southwestern United States". Madroño. 20 (2). California Botanical Society: 33–41. JSTOR 41423342.
External links
edit"Cucurbita cordata". The Encyclopedia of Life.
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