Coryphantha muehlenpfordtii var. robustispina (Schott ex Engelm.) W.T.Marshall Arizonas Cact.: 94. 1953.

Nomenclatural References

• person : George Engelmann (1809-1884) Based on occurrence of standard abbreviation 'Engelm.' in the authors string.
• person : Heinrich Wilhelm Schott (1794-1865) Based on occurrence of standard abbreviation 'Schott' in the authors string.
• person : William Taylor Marshall (1886-1957) Based on occurrence of standard abbreviation 'W.T.Marshall' in the authors string.
• database : The Plant List version 1.0, record: kew-2739681
• database : The Plant List version 1.1, record: kew-2739681