Centennial Russet was tested as WC285-146 and was jointly released by Colorado State University and the USDA in 1977. Plants are determinate, medium large, upright, spreading and medium to late maturing. Leaves are large, dark green, open and pubescent. Petioles are light green with red pigment at the base. The terminal leaflets are large, ovate and symmetrical.
Primary leaflets are symmetrical, ovate and partly truncate.
Flowers are many, large and lavender with white at the apex. The calyx has red pigmentation at the base. Anthers are large and orange with a moderate amount of pollen. Tubers are oblong, smooth,blocky and slightly flattened with a thick, dark netted skin. Eyes are shallow and sparse on the stem end.