Haageocereus ridigissimus Backeb. in Cact. Succ. J. (Los Angeles) 3: 130. 1932.

Nomenclatural References

• person : Curt Backeberg (1894-1966) Based on occurrence of standard abbreviation 'Backeb.' in the authors string.
• database : The Plant List version 1.0, record: tro-5106849
• database : The Plant List version 1.1, record: tro-5106849