|
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 eight genera in the family 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. ==Systematics== The known living genera are grouped into subfamilies, tribes, and subtribes as follows: Subfamily Engelhardioideae * ''Alfaroa'' Standl. – gaulin * ''Engelhardia'' Lesch. ex Blume – cheo * ''Oreomunnea'' Oerst. Subfamily Juglandoideae Tribe Platycaryeae * ''Platycarya'' Siebold & Zucc. Tribe Juglandeae Subtribe Caryinae * ''Carya'' Nutt. – hickory and pecan * ''Annamocarya'' A.Chev. Subtribe Juglandinae * ''Cyclocarya'' Iljinsk – wheel wingnut * ''Juglans'' L. – walnut * ''Pterocarya'' Kunth – wingnut ''Incertae sedis'' *''Rhoiptelea'' Diels & Hand.-Mazz. 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 actually be a member of ''Carya''. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Juglandaceae」の詳細全文を読む スポンサード リンク
|