Which species of Selenicereus?
I recently purchased from different sellers two sets of Selenicereus cuttings. Both sets were sold under the name Selenicereus grandiflorus/Queen of the Night. Interestingly, as you can see in the picture, the cuttings look quite different, both in terms of the color and the distribution of areoles on the stem. The flowers on the mother plants differ slightly, too.
My question is, are these really S. grandiflorus? As I understand, there are many differnet strains of Selenicereus "grandiflorus" in cultivation both here in Europe and, I would guess, in the US, too. Does anyone grow anything similar with a precise ID? Could these be crosses of different Selenicereus species? S. pteranthus? S. macdonaldiae? I would greatly appreciate any help with IDing the plants...