Is there actually a cultivar by the name of 'Evening Glory'?

Moonflower (Ipomoea alba) - has the common name "Evening Glory"
Morning Glory (Ipomoea 'Evening Glory')

It was created on the basis of this website listing, and I think it looks different from Ipomoea alba.

https://www.sunshine-seeds.de/...

Edited to add that this website commonly identifies Ipomoea plants by the species name unless the plant is a hybrid, so I think there's a good chance it's a hybrid cultivar.

Thanks zuzu! The bloom photo at that site shows a definite yellow shade where Ipomoea alba is a totally white bloom, so it probably is a hybrid. I can't get back to their page now because a window keeps popping up saying something about a security warning and insecure connection but when I typed Evening Glory into their search box, it brought up a page with photo's of both the white Ipomoea alba and 'Evening Glory' with the yellow bands.