The Encyclopedia Americana (1920)/Juglandacæ
JUGLANDACÆ, the walnut family, dicotyledonous plants, native of the north temperate zone. Most of the 40 or more species of this family consist of trees, all nut-hearing and producers of excellent wood for cabinet and other work. The most valuable in this respect is the black walnut The best known and most extensive genera are the Juglans or walnuts, and the Hicoria or hickories. The family is distinguished by alternate compound leaves.