White Vanguard has, by benign accident, been distributed as two different seedlings as noted by Ruud. They possess two different parentage accordingly. #79H14-1 is the true White Vanguard, an Archangel seedling, that I acquired from Bill Seidl over a dozen years ago. It blooms very early, concurrent with the last blooms of Claire de Lune, has warm tints upon first opening and stands well without mechanical support. I was unsuccessful in trying to post a picture here, but have posted images of a newly opened bloom and the bush of #79H14-1 on my Facebook page Chotkowski Gardens for those who are interested.