Horridocactus paucicostatus subsp. echinus (F.Ritter) Guiggi in Cactology 3: 8. 2012
Horridocactus paucicostatus subsp. echinus in Cactology 3: 8. 2012
is new combination for Pyrrhocactus echinus in Taxon 12: 33. 1963
Horridocactus paucicostatus subsp. echinus in Cactology 3: 8. 2012
Taxon for this name