Origin: in Saskatoon, Saskatchewan, Canada, by C.F. Patterson, Univ. of Saskatchewan. Introd. in 1960 for home gardens. Derived from Prunus nigra and P. salicina; selected in 1948; tested as Sask. P58-106. Tree: size medium; vase shape, but not too spreading; trace of winter injury at Saskatoon. Fruit: up to 2 inches long and 1 3/4 inches in diam. under nonirrigated orchard conditions at Saskatoon; skin dark red; quality good; somewhat freestone; ripens in early September; resembles Acme and Elite.