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Styphnolobium japonicum
''Styphnolobium japonicum'' (L.) Schott, the pagoda tree (Chinese Scholar, Japanese pagoda tree; syn. ''Sophora japonica'') is a species of tree in the subfamily Faboideae of the pea family Fabaceae.
It was formerly included within a broader interpretation of the genus ''Sophora''. The species of ''Styphnolobium'' differ from ''Sophora'' in lacking the ability to form symbioses with rhizobia (nitrogen fixing bacteria) on their roots. It also differs from the related genus ''Calia'' (mescalbeans) in having deciduous leaves and flowers in axillary, not terminal, racemes. The leaves are alternate, pinnate, with 9-21 leaflets, and the flowers in pendulous racemes similar to those of the Black locust.
==Distribution==
''Styphnolobium japonicum'' is native to China; despite the name it was introduced in Japan). It is a popular ornamental tree in Europe, North America and South Africa, grown for its white flowers, borne in late summer after most other flowering trees have long finished flowering. It grows into a lofty tree 10–20 m tall with an equal spread, and produces a fine, dark brown timber.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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