Silphium dentatum Elliott. Phen: Jul-Sep. Hab: Woodlands, roadsides. Dist: NC south to s. FL and AL.

Origin/Endemic status: Endemic

Taxonomy Comments: This highly variable species is poorly understood.

Synonymy: = F, W; = Silphium asteriscus L. var. dentatum (Elliott) Chapm. – FNA21, K3, K4; = Silphium dentatum Elliott var. dentatum – RAB; < Silphium asteriscus L. – Fl7, Tn, WH3; > Silphium asteriscus L. var. angustatum A.Gray – K1, SE1; > Silphium asteriscus L. var. laevicaule DC. – K1; > Silphium dentatum Elliott – SE1; > Silphium dentatum Elliott var. angustatum (A.Gray) L.M.Perry – Perry (1937); > Silphium dentatum Elliott var. dentatum – Perry (1937); > Silphium elliottii Small – S; > Silphium incisum Greene – S; ~ Silphium nodosum Small; > Silphium nodum Small – S

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