Synonyms
Delphinium andersonii subsp. cognatum (Greene) Ewan
Delphinium cognatum Greene
Delphinium megacarpum A.Nelson & J.F.Macbr.
Delphinastrum andersonii (A.Gray) Nieuwl.
Delphinium andersonii var. cognatum (Greene) R.J.Davis
Delphinium scaposum var. andersonii (A.Gray) S.L.Welsh
Delphinium bicolor var. cognatum (Greene) K.C.Davis
Delphinium tricorne var. andersonii (A.Gray) Huth