Opuntia echios var. zacana

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Opuntia echios var. zacana

Opuntia echios var. zacana (J.T.Howell) E.F.Anderson & Walk. in Madroño 20: 256. 1970 sec. Anderson & Walkington 19711

• ≡Opuntia zacana J.T.Howell in Proc. Calif. Acad. Sci., ser. 4, 21: 48. 1933 syn. sec. Anderson & Walkington 19711
• ≡Opuntia galapageia var. zacana Backeb., Cactaceae 1: 562. 1958 syn. sec. Anderson & Walkington 19711
• ≡Opuntia galapageia subsp. zacana (J.T.Howell) Guiggi in Cactology 5 (Suppl. 8): 12. 2020 syn. sec. Anderson & Walkington 19711

• 1. Anderson, E. F. & Walkington, D.L. 1971: Cactaceae, pp. 533–546. – In: Wiggins, I. L. & Porter, D. M., Flora of the Galápagos islands. – Palo Alto, CA: Stanford University Press

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