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Asteraceae
Silphidium

not marked as a favorite taxon Silphidium (Torrey & A. Gray) Mesfin & D.J. Crawford.

A monotypic genus, a perennial herb, of the Southern Appalachians. Long known to be an evolutionary outlier in Coreopsis, the species formerly known as Coreopsis latifolia was placed in a monotypic genus by Tadesse & Crawford (2023). Phylogenetic studies suggest that Anacis and Silphidium are more closely related to parts of Bidens than to Coreopsis s.s. (Tadesse & Crawford 2023).

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References: Cronquist (1980); Feng et al. (2024); Sherff & Alexander (1955); Smith (1976); Strother (2006yy) In Flora of North America Editorial Committee (2006c); Tadesse & Crawford (2014); Tadesse & Crawford (2023). Show full citations.

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image #1 of Silphidium© Richard & Teresa Ware | Silphidium latifolium CC-BY-NC, permission granted to NCBG | Original Image ⭷
image #2 of Silphidium© Alan Cressler: Cohutta Mountains, Chattahoochee National Forest, Gilmer County, Georgia 2 by Alan Cressler | Silphidium latifolium source | Original Image ⭷

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