Helianthus porteri
| Helianthus porteri | |
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| Species: | H. porteri
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| Helianthus porteri (A.Gray) Pruski 1998 not (A.Gray) Heiser 1978 (1978 name not validly published)
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Helianthus porteri is a species of sunflower known by the common names Porter's sunflower[2] and Confederate daisy. It is native to the southeastern (Georgia, Alabama, and the Carolinas).[3]
Helianthus porteri grows on granite hillsides. It is an annual herb up to 100 cm (40 inches) tall. One plant usually produces 5 or more flower heads, each containing 7 or 8 yellow ray florets surrounding 30 or more yellow disc florets.[4][5]
References
- ^ The Plant List, Helianthus porteri (A.Gray) Pruski
- ^ USDA, NRCS (n.d.). "Helianthus porteri". The PLANTS Database (plants.usda.gov). Greensboro, North Carolina: National Plant Data Team. Retrieved 6 July 2015.
- ^ Biota of North America Program 2014 county distribution map
- ^ Flora of North America, Helianthus porteri (A. Gray) Pruski, 1998. Confederate daisy
- ^ Blake, Sydney Fay 1918. Contributions from the Gray Herbarium of Harvard University 54: 114–115, as Viguiera porteri
External links
- photo of herbarium specimen at Missouri Botanical Garden, collected in Georgia in 1846, isotype of Rudbeckia porteri/Viguiera porteri/Helianthus porteri
- Scott D. Gevaert, Jennifer R. Mandel, John M. Burke, and Lisa A. Donovan. 2013. High Genetic Diversity and Low Population Structure in Porter’s Sunflower (Helianthus porteri). Journal of Heredity 2013:104(3):407–415 doi:10.1093/jhered/est009
- Plant Life of the Monastery of the Holy Spirit by Jim Allison
- Alabama Plant Atlas, Helianthus porteri
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