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lignum vitae
Lignum vitae is a trade wood, also called guayacan or guaiacum,〔OED entry〕 and in parts of Europe known as pockholz, from trees of the genus ''Guaiacum''. The trees are indigenous to the Caribbean and the northern coast of South America and have been an important export crop to Europe since the beginning of the 16th century. The wood was once very important for applications requiring a material with its extraordinary combination of strength, toughness, and density. It is also the national tree of the Bahamas and the Jamaican national flower.
The wood is obtained chiefly from ''Guaiacum officinale'' and ''Guaiacum sanctum'', both small, slow growing trees. All species of the genus ''Guaiacum'' are now listed in Appendix II of CITES (the Convention on International Trade in Endangered Species of Wild Fauna and Flora) as potentially endangered species. Demand for the wood has been reduced by modern materials science, which has led to polymer, alloys and composite materials that can take lignum vitae's place.
==Name==
"Lignum vitae" is Latin for "wood of life", and derives its name from its medicinal uses; lignum vitae resin has been used to treat a variety of medical conditions from coughs to arthritis, and chips of the wood can also be used to brew a tea. Other names for lignum vitae include palo santo (Spanish for "holy wood") and "bastard greenheart" (not to be confused with true Greenheart ''Chlorocardium rodiei'', a popular wood in shipbuilding, cabinetry, and woodturning but a completely different timber); lignum vitae is also one of the numerous hard, dense woods loosely referred to as ironwood.
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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