Copiapoa hypogaea subsp. tenuissima F.Ritter ex D.R.Hunt in Cactaceae Syst. Init. 13: 14. 2002
Copiapoa hypogaea subsp. tenuissima in Cactaceae Syst. Init. 13: 14. 2002
is basionym for Copiapoa humilis subsp. tenuissima in Cactaceae Syst. Init. 16: 6. 2003
is basionym for Copiapoa tenuissima in Taxon 12: 31. 1963
is basionym for Copiapoa humilis var. tenuissima in Brit. Cact. Succ. J. 16: 15. 1998
Holotype: Chile, El Cobre, F. Ritter 540 (U: U 117651 B)