Melocactus paucispinus Melocactus paucispinus Heimen & R.Raul in Kakteen And. Sukk. 34: 227–229. 1983 sec. Zappi & Taylor 2020+1 wfo-00012897131. 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 Bibliography A. Hunt, D.R. 2016: CITES Cactaceae Checklist. 3rd edition. – published by the author