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