Do you know what to call the plant in the picture? Is it another Rhipsalis? I don't know much about the genus, but Paul won't be able to help here... we can move it to the genus listing if we don't have a specific ID.
Tried a couple of times. R. trigona could be a good option but it still would be a guess. But with some 40 species it is almost impossible to say from 1 picture with no flowers or fruits, so I would suggest it to move to the genus,