Here is Leucanthum blooming last year in Arcata, Calif.95521 I don't know if its var. centifolium. I think I purchased it from The Lily Garden but its not in this years catalog.
I found The Lily Garden catalog for Fall 2012- spring13. It states the following:
"Originating from China, has huge white trumpets with a dark chocolate-raspberry reverse. Stem will grow taller year after year and bear more flowers, reaching 8 feet or more at maturity. Fragrant 4-8 feet July"
