The genera Rhipsalidopsis and Schlumbergera

Rhipsalidopsis Britton & Rose

in Britton, & Rose (1923):, The Cactaceae. Descriptions and illustrations of plants of the cactus family 4: 209.
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Epiphyllopsis A. Berger in Berger, A. (1929): Kakteen: 341.

Schlumbergera Lemaire

in Lemaire, C. (1858): L’Illustration Horticole. Ghent & Brussels 5: 24.
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Synonyms:

Epiphyllanthus A. Berger in Report (Annual) of the Missouri Botanical Garden. St. Louis 1905: 84.
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Pseudozygocactus Backeberg in Backeberg, C. (1938): Blätter für Kakteenforschung 1938(6): [17; 5, 11, 23].

Zygocactus K. Schumann in Martius, C.F.P. (1890): Flora Brasiliensis 4(2): 223.
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