Echinocactus polyancistrus Engelm. & J.M.Bigelow in Proc. Amer. Acad. Arts 3: 272. 1856.

Nomenclatural References

• person : George Engelmann (1809-1884) Based on occurrence of standard abbreviation 'Engelm.' in the authors string.
• person : John Milton Bigelow (1804-1878) Based on occurrence of standard abbreviation 'J.M.Bigelow' in the authors string.
• database : The Plant List version 1.0, record: kew-2782176
• database : The Plant List version 1.1, record: kew-2782176