Pyrrhocactus floccosus F.Ritter in Taxon 12: 32. 1963
Pyrrhocactus floccosus in Taxon 12: 32. 1963
is basionym for Eriosyce paucicostata subsp. floccosa in Cactaceae Syst. Init. 16: 11. 2003
is basionym for Neoporteria echinus var. floccosa, Cacti Illustr. Dict.: 242. 1991
is basionym for Neoporteria paucicostata var. floccosa, Cact. Fl. Silvestre Chile: 208. 1989
is basionym for Neochilenia floccosa, Descr. Cact. Nov. 3: 9. 1963
is basionym for Horridocactus paucicostatus subsp. floccosus in Cactology 3: 8. 2012
is basionym for Neoporteria floccosa in Repert. Pl. Succ. 43: 15. 1992
is basionym for Eriosyce taltalensis var. floccosa, Eriosyce (Cactac.) Gen. Revis. Ampl.: 119. 1994