|Japanese pagoda tree|
|Styphnolobium japonicum tree|
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.
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.
The flowers and leaves are sometimes used for teas, such as by families in Laoshan Village, Shandong Province, China. It counts as a variety of herbal tea.
Used to make the strong, springy curved "enju wood" handle used on the traditional Japanese woodworking adze, called the chouna. Pagoda wood is very hard after drying. This makes pagoda-products durable and long lasting. The pagoda tree trunk is generally composed of alternating ridges of light-brown outside layers and gray brown inside layers. This makes wood carving products for example from the Hokkaido native Ainu people very decorative. Famous are their "Blackstone fish owl" carvings.
The dried flower buds may contain as much as 20% rutin with some quercetin. S. japonicum dried fruit contain the flavonoid glycosides sophoricoside, genistin and rutin and the flavonoid aglycones genistein, quercetin and kaempferol. Another analysis found genistein and genistein glycosides including sophorabioside, sophoricoside, genistein-7-diglucoside, genistein-7-diglucorhamnoside, and kaempferol and the kaempferol glycosides kaempferol-3-sophoroside and kaempferol-3-rhamnodiglucoside. The fruit also contain the alkaloids cytisine, N-methylcytisine, sophocarpine, matrine and stizolamine.
- "Styphnolobium japonicum". Germplasm Resources Information Network (GRIN). Agricultural Research Service (ARS), United States Department of Agriculture (USDA). Retrieved 2008-02-19.
- "Styphnolobium japonicum – ILDIS LegumeWeb". Retrieved 2008-02-19.
- "Styphnolobium japonicum". Natural Resources Conservation Service PLANTS Database. USDA. Retrieved 4 December 2015.
- "Japanese axes and adzes". Robin Wood. Retrieved 2012-02-24.
- "Beautiful axes, Japanese carpentry tools".
- Tang, Weici; Eisenbrand, Gerhard (1992). Sophora Japonica L. Berlin, Heidelberg: Springer. pp. 945–955. doi:10.1007/978-3-642-73739-8_114. ISBN 978-3-642-73741-1.
- Chang, L.; Zhang, X.X.; Ren, Y.P.; Cao, L.; Zhi, X.R.; Zhang, L.T. (2013). "Simultaneous Quantification of Six Major Flavonoids From Fructus sophorae by LC-ESI-MS/MS and Statistical Analysis". Indian Journal of Pharmaceutical Sciences. 75 (3): 330–338. doi:10.4103/0250-474X.117437. PMC 3783751. PMID 24082349.
- Bensky, Dan; Clavey, Steven; Stöger, Erich; Lai Bensky, Lilian (2015). Chinese Herbal Medicine: Materia Medica (Portable 3rd ed.). Seattle, USA: Eastland Press. pp. 575–578. ISBN 978-0-939616-82-4.
- The relationship of Sophora sect. Edwardsia (Fabaceae) to Sophora tomentosa, the type species of the genus Sophora, observed from DNA sequence data and morphological characters. Bot. J. Linn. Soc. 146: 439–446 (2004). Available online[permanent dead link].
|Wikimedia Commons has media related to Styphnolobium japonicum.|
- Sophora japonica
- "Chinese Scholar Tree"
- The Evil God in the Pagoda Tree Japanese folktale with the pagoda tree at hyakumonogatari.com
- Beautiful axes, Japanese carpentry tools in Europe