That’s a big bloom.
After a couple of decades, our signature plant in our outdoor kitchen is blooming. Bigleaf Magnolia (Magnolia macropphyla) has the largest leaves and largest blooms of any North American tree. This is the last of five blooms on this tree this year.
There are a couple of varieties for this species. Ashe magnolia, which is common in the higher mountains, was formerly considered a separate species, but is now lumped in as a sub-species. The most unique variety is a yellow flowered one that is found in Bankhead National Forest in Alabama. And yes that forest is named after the Bankhead family of politicians and actors.
I think this would have been the favorite tree of Talulah, as it is as extravagant as she was.