Opuntia mesacantha var. microsperma (Engelm. & J.M.Bigelow) J.M.Coult. in Contr. U.S. Natl. Herb. 3(7): 429. 1896.

Nomenclatural References

• person : George Engelmann (1809-1884) Based on occurrence of standard abbreviation 'Engelm.' in the authors string.
• person : John Merle Coulter (1851-1928) Based on occurrence of standard abbreviation 'J.M.Coult.' 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: tro-5108180
• database : The Plant List version 1.1, record: tro-5108180