Origin: in Morden, Manitoba, Canada, by Canada Dept. Agr., Res. Sta. Introd. in 1944. Open-pollinated seedling of Prunus nigra 'Assiniboine'; seed originally sent from Minnesota Agr. Expt. Sta., Fruit Breeding Farm, Excelsior, Minn.; seed planted in 1922; selected in 1933; tested as Morden M-101. Tree: moderately spreading; strong, sturdy; hardy; annually productive; suited to northern prairies. A good native-type plum of dessert quality. Fruit: oval-ovate; 1 1/4 × 1 inches; skin thin, tender, bright red with light gray bloom; flesh yellowish, juicy, sweet; pleasant as a dessert fruit; fair for cooking; season very early (mid-August).