Karyn is right about vitifolia
I have been reading through the old posts, as you well know, trying to learn about these lovely flowers :)
I ran across one where Karyn had said that "vitifolia" and another passiflora; would easily root in water. yesterday I tried a cutting similar to the way explained here, and it might make it, I know how cuttings are...but when I tried Karyn's "water in a jar" (I added superthrive to it) it has not wilted one iota! And it's been in there as long as the "soil based cutting"
Thanks K :)...this might work out