Brunfelsia Hybrid, Lady of the Night

The Name Isola comes from the creator of the hybrid. He named the plant after his mother

This is a new cultivar created as a cross between B. americana and B. grandiflora. It has advantages of fragrant cream-colored brunfelsia...Read Mores and light purple color of flowers that change sometimes to cream-yellowing, remaining purple margins. Very slow-growing.

Hi
I am trying to get to the bottom of the scientific name of this plant:
Brunfelsia isola. this name is not listed on The ...Read MorePlant List, Missouri Botanical Garden, Kew or NY bot garden. Is it a cultivar, a cross? anyone knowing anything - I would greatly appreciate it.

Possible cross between americana and grandflora?

Thank you.