Echinocactus scheeri var. brevihamatus (Engelm.) K.Schum. Gesamtbeschr. Kakt.: 336. 1897–1899.

Nomenclatural References

• person : George Engelmann (1809-1884) Based on occurrence of standard abbreviation 'Engelm.' in the authors string.
• person : Karl Moritz Schumann (1851-1904) Based on occurrence of standard abbreviation 'K.Schum.' in the authors string.
• database : The Plant List version 1.0, record: kew-2782258
• database : The Plant List version 1.1, record: kew-2782258