Pyrrhocactus fuscus (Muehlenpf.) F.Ritter in Succulenta (Netherlands) 1959: 131. 1959.

Nomenclatural References

• person : Friedrich Ritter (1898-1989) Based on occurrence of standard abbreviation 'F.Ritter' in the authors string.
• person : Philipp August Friedrich Mühlenpfordt (1803-1891) Based on occurrence of standard abbreviation 'Muehlenpf.' in the authors string.
• database : The Plant List version 1.0, record: kew-2413794
• database : The Plant List version 1.1, record: kew-2413794