If I remove the fragrant and no-trumpet requirements, and maybe look for a trumpet that atleast has petals that flare out enough to look star-shaped, would that open the playing field a little more? Would you have a fairly solid recommendation, then?
My mom has lilies (asiatic?) growing at her house that bloomed in April, I believe, and they are definitely not trumpet-shaped. She is an hour south of here and, therefore, is about 1-2 weeks ahead of us in bloom time, but that would still easily put the bloom period far enough before July 4th....the only trouble is that hers are red and orange, not white. (I have pictures of them in another thread.)