remontant forms/hybrids of wichurana

Just wondering if there are any partially remontant forms, or near species hybrids, of wichurana that could be confused with the species? It is winter here and the nights are getting down to -2

Here are some photos I took when its first flowers appeared in summer this year.

I was thinking it might be ‘Temple Bells’ but I have never seen it and the photos on HMF aren’t very clear.

And this one has 5 petals, not 7 as HMF states TB has.