Pyrrhocactus bulbocalyx (Werderm.) Backeb., Cactaceae 3: 1565. 1959
Pyrrhocactus bulbocalyx, Cactaceae 3: 1565. 1959
is new combination for Echinocactus bulbocalyx, Blüh. Kakt. Mappe 34: t. 136. 1937
Pyrrhocactus bulbocalyx, Cactaceae 3: 1565. 1959
Taxon for this name