Echinocactus wislizeni f. phoeniceus (R.E.Kunze) Schelle
Echinocactus wislizeni var. phoeniceus R.E.Kunze
Ferocactus wislizeni subsp. ajoensis Fencl & Kalas
Echinocactus falconeri Orcutt
Echinocactus wislizeni var. albus Costantin & Poiss.
Ferocactus phoeniceus (R.E.Kunze) Orcutt
Ferocactus wislizeni var. albispinus (Toumey) Y.Itô
Echinocactus wislizeni Engelm.
Echinocactus wislizeni var. latispinus Schelle
Echinocactus wislizeni var. decipiens Engelm.
Ferocactus arizonicus (R.E.Kunze) Orcutt
Ferocactus wislizeni var. ajoensis Fencl & Kalas
Ferocactus wislizeni var. phoeniceus (R.E.Kunze) Y.Itô
Ferocactus falconeri (Orcutt) Orcutt
Echinocactus arizonicus R.E.Kunze
Echinocactus wislizeni var. albispinus Toumey
Echinocactus wislizeni f. albispinus (Toumey) Schelle
Ferocactus wislizeni var. flalconeri (Orcutt) Y.Itô