Aylostera muscula (F.Ritter & Thiele) Backeb., Descr. Cact. Nov. 3: 5. 1963 Aylostera muscula (F.Ritter & Thiele) Backeb., Descr. Cact. Nov. 3: 5. 1963is new combination for Rebutia muscula F.Ritter & Thiele in Taxon 12: 29. 1963Taxon for this nameAylostera muscula (F.Ritter & Thiele) Backeb.