■(SIB) 'Fourfold White' 1970, McEwen 'Fourfold White' (Currier McEwen, R. 1969). Seedling T 66/79A. SIB, 36" (91 cm), Midseason to late bloom. Color Class W1, Whi...
■(SIB) 'Berliner Riesen' 1980, Tamberg 'Berliner Riesen' ( Tomas Tamberg, R. 1978) SIB (diploid), 55" (140 cm), Late bloom. Dark violet self with white lines on h...
■(SIB) 'Sibirischer Fruehling' 2014, Tamberg 'Sibirischer Fruehling' ( Tomas Tamberg, R. 2014) SIB (dip.), 33" (84 cm), Early bloom. White self; signal light ...