Horridocactus echinus var. minor (F.Ritter) Backeb., Kakteenlex.: 190. 1966
Horridocactus echinus var. minor, Kakteenlex.: 190. 1966
is new combination for Pyrrhocactus echinus var. minor in Taxon 12: 33. 1963
Horridocactus echinus var. minor, Kakteenlex.: 190. 1966
Taxon for this name