The Redcurrant (Ribes rubrum) is a member of the genus Ribes in the gooseberry family Grossulariaceae, native to parts of western Europe (Belgium, France, Germany, Netherlands, Northern Italy, Northern Spain and Portugal).
Viburnum opulus (Guelder Rose, Water Elder, European Cranberrybush, Cramp Bark, Snowball Tree) is a species of Viburnum, native to Europe and Asia. Some botanists also treat the closely related North American species Viburnum trilobum as a variety of it (asViburnum opulus var. americanum Ait.), or a subspecies, Viburnum opulus subsp. trilobum (Marshall) Clausen. The common name 'Guelder Rose' appears to have originated because a popular cultivar, the Snowball tree supposedly first originated in the Dutch province of Gelderland.