First published in Cactus (Paris) 85: 109 (1965)
- Govaerts, R. (2001). World Checklist of Seed Plants Database in ACCESS E-F: 1-50919.
Not accepted by
- Hunt, D. (2016). CITES Cactaceae Checklist, ed. 3: 1-174. Royal Botanic Gardens, Kew. [Cited as Echinopsis rhodotricha subsp. chacoana.]
Kew Names and Taxonomic Backbone
The International Plant Names Index and World Checklist of Selected Plant Families 2020. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
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