The following bibliography has been generated by bringing together all references provided by our content partners. There may be duplication.
References
- Flora of North America Editorial Committee, e. 2006. Magnoliophyta: Asteridae, part 7: Asteraceae, part 2. 20: i–xxii + 1–666. In Fl. N. Amer. Oxford University Press, New York.
- USDA, NRCS. 2007. The PLANTS Database (http://plants.usda.gov). National Plant Data Center, Baton Rouge.
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