Rhipsalis phyllanthus Schumann in Martius, Flora bras, 298,
Rhipsalis macrocarpa Miquel, Bull Sci Phys Nat Neerl. 49, 1838.
were both treated as synonyms of Epiphyllum phyllanthus in
B&R IV 187. 1923.
Apparently both were based on a Vellozo 1827 drawing of Cactus phyllanthus
which shows a leaf-like stem plus, dare I say it a Rhipsalis-like