First published in Bot. Jahrb. Syst. 37: 559 (1906)
- Govaerts, R. (2003). World Checklist of Seed Plants Database in ACCESS G: 1-40325.
Not accepted by
- Aedo, C. (2012). Revision of Geranium (Geraniaceae) in the New World Systematic Botany Monographs 95: 1-550. [Cited as Geranium diffusum.]
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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