Ritterocactus mammulosus subsp. eugeniae (Vliet) Doweld in Sukkulenty 2(2): 22. 1999
Ritterocactus mammulosus subsp. eugeniae in Sukkulenty 2(2): 22. 1999
is new combination for Notocactus eugeniae in Succulenta (Netherlands) 55(2): 24. 1976
Ritterocactus mammulosus subsp. eugeniae in Sukkulenty 2(2): 22. 1999
Taxon for this name