Juglans regia, known by various common names including the common walnut, English walnut, or Persian walnut amongst other names, is a species of walnut. It is native to Eurasia in at least southwest a

Juglandinae is a subtribe of the Juglandeae tribe, of the Juglandoideae subfamily, in the Juglandaceae family. Walnut tree species make up the genus Juglans, which belongs to the subtribe Juglandinae.