The flowers are very similar to M. x soulangiana but larger, 6-10" wide. The middle petals (tepals) remain closed creating what they call a cup and saucer look. These are from a cultivar 'Charles Raffil' which blooms when young.
Just about any another magnolia with pink flowers. The leaves have a distinctly different venation pattern, and the innermost tepals remain upright and enclosing the stamens. Also the trees will be very tall.
438 Ewell Ave. Large specimen
'Charles Raffil' - 6500 Soquel Dr. Horticulture Department in the gardens