Neoporteria clavata var. nigrihorrida (Backeb.) A.E.Hoffm., Cact. Fl. Silvestre Chile: 160. 1989 Neoporteria clavata var. nigrihorrida (Backeb.) A.E.Hoffm., Cact. Fl. Silvestre Chile: 160. 1989Taxon for this nameNeoporteria clavata var. nigrihorrida (Backeb.) A.E.Hoffm.
