Origin of the name:
-opsis: indicates a resemblance.
The name was given related to some species having similarities to the genus Rhipsalis.
Britton, N. L. & Rose, J. N. (1923): The Cactaceae. Descriptions and illustrations of plants of the cactus family 4: 209.
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Epiphyllopsis A. Berger
Berger, A. (1929): Kakteen: 97.