^aClasification scheme for superseries Stellata of Hawkes (1990) with modifications after Rodriguez and Spooner (1997), Lara-Cabrera and Spooner (2004), and Spooner et al. (2004)

^bResistance data from personal experience, published accounts [Austin et al. 1993; Helgeson et al. 1998; Micheletto et al. 2000; Naess et al. 2000; Song et al. 2003; Vossen et al. 2003; Vossen et al. 2005], and USDA Potato Genebank website.