Seedling F-83. Pod parent: ‘Perihelion’. SINGLE. Floriferous, ultra-vigorous, early-flowering herbaceous hybrid with single, bone-white very large 20 cm (8 inch) flowers held erect atop a mound of leaflets going literally all the way down to the ground; healthy bush of magnificent proportions and stature; height to 90 cm (36 inches) at maturity; large leaflets to match size of flowers; side-buds, pollen, and seeds; gives a general impression of volume combined with purity; excellent garden-plant.