Silphium connatum Linnaeus. Virginia Cup-plant. Phen: Jun-Aug. Hab: Floodplain forests and openings. Dist: VA and WV south to nw. NC and ne. TN.
Origin/Endemic status: Endemic
Synonymy: = F, RAB, WV, Perry (1937); = Silphium perfoliatum L. ssp. connatum (L.) Cruden – Cruden (1962); = Silphium perfoliatum L. var. connatum (L.) Cronquist – C, FNA21, K1, K3, K4, SE1, Va; < Silphium perfoliatum L. – G, W
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