Both are correct. The first is giving the actual parentage of the hybrid. The second with just the Genus and cultivar (indicating a hybrid) is also correct.
It's for a Plant Admin person to decide which s(he) would prefer. I believe Evan would prefer Passiflora 'Incense', and would put the parentage in the comment section.
One of them has to go, but neither is a synonym of the other...does that make any sense?
