Melocactus ferreophilus Melocactus ferreophilus Buining & Brederoo in Krainz, Kakteen 52: CVId. 1973 sec. Zappi & Taylor 2020+1 wfo-0000375407≡Melocactus azureus subsp. ferreophilus (Buining & Brederoo) N.P.Taylor in Bradleya 9: 40. 1991 syn. sec. ??? wfo-00003693751. Zappi, D. & Taylor, N. P. 2020+: Cactaceae in Flora e Funga do Brasil. – Jardim Botânico do Rio de Janeiro – http://floradobrasil.jbrj.gov.br.ContentDistribution (Area) Bibliography Distribution (Area) Brazil nativeA,B Bibliography A. Hunt, D.R. 2016: CITES Cactaceae Checklist. 3rd edition. – published by the authorB. Zappi, D. & Taylor, N. P. 2020+: Cactaceae in Flora e Funga do Brasil. – Jardim Botânico do Rio de Janeiro – http://floradobrasil.jbrj.gov.br
