Rebutia spinosissima Backeb. in Blätt. Kakteenf. 1935(8): 7. 1935 Rebutia spinosissima Backeb. in Blätt. Kakteenf. 1935(8): 7. 1935is basionym for Aylostera spinosissima (Backeb.) Backeb., Kaktus-ABC: 275. 1936 ["1935"]Taxon for this nameRebutia spinosissima Backeb.