Disocactus nelsonii (Britton & Rose) Linding. [ Epiphyllum nelsonii Britton & Rose]
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Disocactus nelsonii (Britton & Rose) Linding. [ Epiphyllum nelsonii Britton & Rose] [Cactaceae]
P.C. Standley, J.A. Steyermark, Fl. Guatemala, vol. 7(2): : p. 201, fig. 32 (1946-1977) [M. Blos]