Epiphyllum quezaltecum (Standl. & Steyerm.) L.O.Williams
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Epiphyllum quezaltecum (Standl. & Steyerm.) L.O.Williams [] [Cactaceae]
P.C. Standley, J.A. Steyermark, Fl. Guatemala, vol. 7(2): : p. 203, fig. 33 (1946-1977) [M. Blos]