Juglandaceae

Juglandaceae
Juglans regia
Scientific classification
Kingdom:	Plantae
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Rosids
Order:	Fagales
Family:	Juglandaceae DC. ex Perleb
Type genus
Juglans L.
Subfamilies
See text
The range of subfamily Engelhardioideae.
The range of subfamily Juglandoideae.
Synonyms
Platycaryaceae Nakai ex Doweld Pterocaryaceae Nakai, nom. inval. Rhoipteleaceae Hand.-Mazz., nom. cons.

See text

Platycaryaceae Nakai ex Doweld Pterocaryaceae Nakai, nom. inval. Rhoipteleaceae Hand.-Mazz., nom. cons.

The Juglandaceae are a family, known as the walnut family, of trees, or sometimes shrubs, in the order Fagales. Various members of this family are native to the Americas, Eurasia, and Southeast Asia. Members of the walnut family have large, aromatic leaves that are usually alternate, but opposite in Alfaroa and Oreomunnea. The leaves are pinnately compound or ternate, and usually 20–100 cm long.

The trees are wind-pollinated, and the flowers are usually arranged in catkins.

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.

The known living genera are grouped into subfamilies, tribes, and subtribes as follows:

The only member of the genus Alfaropsis I.A.Iljinsk., Alfaropsis roxburghiana (Wall.) I.A.Iljinsk. is a synonym for Engelhardia roxburghiana Wall. (or perhaps vice versa).

The only member of the genus Annamocarya A.Chev., Annamocarya sinensis (Dode) J.-F.Leroy, may be a member of Carya.

Some fruits are borderline and difficult to categorize. Hickory nuts (Carya) and walnuts (Juglans) grow within an outer husk; these fruits are sometimes considered to be drupes or drupaceous nuts, rather than true botanical nuts. "Tryma" is a specialized term for such nut-like drupes.

...
Wikipedia