Tephrocactus unguispinus (Backeb.) Backeb. in Cact. Succ. J. (Los Angeles) 23: 15. 1951.

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: kew-2437692
• database : The Plant List version 1.1, record: kew-2437692