https://fsus.ncbg.unc.edu/main.php?pg=show-taxon-detail.php&lsid=urn:lsid:ncbg.unc.edu:taxon:{33EF4BD1-458E-4D68-8E26-2A7832E1142F}
Silphium simpsonii Greene. Hab: Longleaf pinelands. Dist: SC south to FL, west to MS.
Origin/Endemic status: Endemic
Synonymy: = K1; = n/a – RAB; = Silphium asteriscus L. var. simpsonii (Greene) Clevinger – FNA21, K3, K4, Clevinger (2004); = Silphium simpsonii Greene var. simpsonii – Perry (1937); < Silphium asteriscus L. – WH3; < Silphium gracile A.Gray – S, SE1, misapplied
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© Richard & Teresa Ware 
© Richard & Teresa Ware