Echinomastus johnstonii (Parry ex Engelm.) E.M.Baxter Calif. Cactus: 75. 1935.

Nomenclatural References

• person : Charles Christopher Parry (1823-1890) Based on occurrence of standard abbreviation 'Parry' in the authors string.
• person : Edgar Martin Baxter (1903-1967) Based on occurrence of standard abbreviation 'E.M.Baxter' in the authors string.
• 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-5100955
• database : The Plant List version 1.1, record: tro-5100955