Yes Saucer Magnolias would work there as long as they don't dry out. You could try Crepe Myrtle (Lagerstroemia indica), any Redbud (Cercis), Sweet Olive (Osmanthus fragrans - species name says it all), Mock Orange (Pittosporum tobira), India Hawthorn (Rhaphiolepis indica - especially Majestic Beauty if you can find it). Your climate is very similar to mine. I will look around the campus and see if I can come up with any more.