Synonyms
Silphium elatum Banks ex Pursh
Silphium lapsuum Small
Silphium sinuatum Banks ex Pursh
Silphium pseudolaciniatum Fraser ex DC.
Silphium laciniatum Walter
Silphium compositum f. orae (Small) L.M.Perry
Silphium nudicaule M.A.Curtis
Silphium orae Small