Epithelantha petri Halda & Horáček in Acta Mus. Richnov., Sect. Nat. 7: 72. 2000.

Nomenclatural References

• person : Josef Jakob Halda (b.1943) Based on occurrence of standard abbreviation 'Halda' in the authors string.
• person : Ladislav Horáček (b.1959) Based on occurrence of standard abbreviation 'Horáček' in the authors string.
• database : The Plant List version 1.0, record: kew-2791624
• database : The Plant List version 1.1, record: kew-2791624