Synonyms
Silphium asteriscus var. dentatum (Elliott) Chapm.
Silphium dentatum f. nodum (Small) L.M.Perry
Silphium nodum Small
Silphium angustum (A.Gray) Small
Silphium incisum Greene
Silphium elliottii Small
Silphium asteriscus var. laevicaule DC.
Silphium dentatum var. angustatum (A.Gray) L.M.Perry
Silphium asteriscus var. angustatum A.Gray