The nine or ten genera in the family have a total of ca 50 species, and include the commercially important nut-producing trees walnut (Juglans), pecan (Carya illinoinensis), and hickory (Carya). The Persian walnut, Juglans regia, is one of the major nut crops of the world. Walnut, hickory, and gaulin are also valuable timber trees.

Multi-choice problem: Is it true that are pecans and walnuts in the same family?

OPT: A. no; B. yes;
The answer is:
B.