Ritterocactus langsdorfii (Lehm.) Doweld in Sukkulenty 3: 60. 2000
Ritterocactus langsdorfii in Sukkulenty 3: 60. 2000
is new combination for Cactus langsdorfii, Index Sem. (Hamburg): 17. 1826
Ritterocactus langsdorfii in Sukkulenty 3: 60. 2000
Taxon for this name