Mammillaria backebergiana Mammillaria backebergiana F.G.Buchenau in Natl. Cact. Succ. J. 21: 47. 1966 sec. Hunt 20161 wfo-00012558561. Hunt, D.R. 2016: CITES Cactaceae Checklist. 3rd edition. – published by the author=Chilita fertilis Orcutt in Cactography 2. 1926 syn. sec. Kew 20192 wfo-00006020812. Kew 2019: Dataset export of the World Checklist of Vascular Plants database, dated 19 December. – Kew: Royal Botanic GardensContentDistribution (Area) Bibliography Distribution (Area) Mexico nativeA Bibliography A. Guzmán Cruz, L. U., Arias, S. & Dávila, P. 2003: Catálogo de Cactáceas Mexicanas. – Mexico, D. F.: Universidad National Autónoma de México & CONABIO