Echinopsis backebergii Werderm. in: Backeberg, C., Neue Kakteen: 83-84. 1931.

Nomenclatural References

• person : Erich Werdermann (1892-1959) Based on occurrence of standard abbreviation 'Werderm.' in the authors string.
• database : The Plant List version 1.0, record: kew-2783298
• database : The Plant List version 1.1, record: kew-2783298