Nomenclature: wfo-0000398052
Pyrrhocactus calderanus in Succulenta (Netherlands) 1961: 13. 1961.
Nomenclatural References
- person : Friedrich Ritter (1898-1989) Based on occurrence of standard abbreviation 'F.Ritter' in the authors string.
- database : The Plant List version 1.0, record: kew-2413856
- database : The Plant List version 1.1, record: kew-2413856