Juglans is the type genus of the family Juglandaceae. The 21 species in the genus range across the north temperate Old World from southeast Europe east to Japan, and more widely in the New World. China produces half of the world total of walnuts.
Juglans is the type genus of the family Juglandaceae. The 21 species in the genus range across the north temperate Old World from southeast Europe east to Japan, and more widely in the New World. China produces half of the world total of walnuts.