JoJoe, A couple of pics to help you.
R. sulcata showing lots of flower buds. Notice the long stem running thru the pic vertically, with shorter segments emerging from the long stem. This is a characteristic of R. sulcata, but number of short segments can vary a lot.
R.sulcata flower
R. ewaldiana Notice how the stems branch, which is different from sulcata in habit.
Ewaldiana flower buds and flowers are, for me, pinker than R. sulcata. This color difference also follows in the fruit, with ewaldiana berries being pink and sulcata berries being white. However, fruit color is not always a good way to tell Rhipsalis apart as there are a number of species with varieties of different flower and fruit color. However, I have not heard of this for either ewaldiana or sulcata.
So, the big question becomes what is the ID of your second plant?
