Astrophytum caput-medusae D.R.Hunt in Cactaceae Syst. Init. 16: 4. 2003 Astrophytum caput-medusae D.R.Hunt in Cactaceae Syst. Init. 16: 4. 2003Taxon for this nameAstrophytum caput-medusae D.R.Hunt in Cactaceae Syst. Init. 16: 4. 2003