P. antioquiensis x P. tripartita var. mollissima, though this is sometimes disputed. There are a number of different crosses called Passiflora x exoniensis, in the same way that there are a number of different P. alata x P. caerulea hybrids called P. x belotii. My own opinion is that the plant pictured here is correct & that some of the others are different versions of the same cross or P. antioquiensis x P. tarminiana hybrids which are similar but hairless with lighter green & possibly narrower leaf lobes.
P. x exoniensis is also often confused with & labelled as P.
antioquiensis, they can be distinguished however when they flower.
P. antioquiensis flowers are
smaller & less showy, with the same petal colour inside & out & are produced on peduncles
of 2' to 3' long. P. x exoniensis peduncles may be at maximum up to a foot with
the inside of the flower being a fluorescent pink. The one pictured is probably
the best of them with large leaves & stunning spectacular large flowers. It
does not produce any pollen as far as I can tell, but will set fruit with pollen
from other Tacsonia. It is planted in
a sheltered spot so it does
not get full sun all day - as like its parent P. antioquiensis it does not like too much heat. It is shy flowering
in summer. Plant supplied by Hill
House Nursery & Gardens Devon who wanted it identified.