Mammillaria grahamii Engelm. in Proc. Amer. Acad. Arts 3: 262. 1856.

Nomenclatural References

• person : George Engelmann (1809-1884) Based on occurrence of standard abbreviation 'Engelm.' in the authors string.
• database : The Plant List version 1.0, record: tro-5100360
• database : The Plant List version 1.1, record: tro-5100360