Aylostera steinmannii (Solms) Backeb., Cactaceae 3: 1528. 1959 Aylostera steinmannii (Solms) Backeb., Cactaceae 3: 1528. 1959is new combination for Echinocactus steinmannii Solms in Bot. Zeitung (Berlin) 2. Abt. 65(Abt. 1): 133, fig. 4, 10. 1907Taxon for this nameAylostera steinmannii (Solms) Backeb.