Melocactus douradaensis Hovens & Strecker in Succulenta (Netherlands) 63(1): 3. 1984
Melocactus douradaensis in Succulenta (Netherlands) 63(1): 3. 1984
is basionym for Melocactus zehntneri f. douradaensis in Cactology 5 (Suppl. 8): 3. 2020
is basionym for Melocactus zehntneri f. douradaensis in Cactus & Co. 8: 262. 2004
is basionym for Melocactus zehntneri subsp. douradaensis in Kakteen And. Sukk. 71(4): 110. 2020