Copiapoa humilis var. tenuissima (F.Ritter) G.J.Charles in Brit. Cact. Succ. J. 16: 15. 1998
Copiapoa humilis var. tenuissima in Brit. Cact. Succ. J. 16: 15. 1998
is new combination for Copiapoa hypogaea subsp. tenuissima in Cactaceae Syst. Init. 13: 14. 2002