Seedling 2001-04. Parentage unknown. First year bloomed 2001, first propagated 2002. SINGLE. White. Pale green carpels with pink stigmas. One flower per stem, 18 cm. diameter (7 inches). No fragrance. Has pollen; makes seeds. Height to 75 cm (30 inches), with a narrow upright growth habit. Blooms early season. Rossweisse, a daughter of Wotan, is one of the Valkeries.