Vitis labrusca, the fox grape, is a species of grapevines belonging to the Vitis genus in the flowering plant family Vitaceae. The vines are native to eastern North America and are the source of many grape cultivars.‘Concord’ is a cultivar developed by Ephraim Bull of Concord Massachusetts from wild Vitis labrusca vines. It was introduced into commerce in 1843. It is considered by many to be the standard of excellence for blue-black American grapes.