Mammillaria wrightii var. wilcoxii (Toumey ex K.Schum.) W.T.Marshall Ariz. Cactuses: 100. 1950.

Nomenclatural References

• person : James William Toumey (1865-1932) Based on occurrence of standard abbreviation 'Toumey' in the authors string.
• person : Karl Moritz Schumann (1851-1904) Based on occurrence of standard abbreviation 'K.Schum.' 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: tro-5100049
• database : The Plant List version 1.1, record: tro-5100049