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''Tetraclinis'' (also called arar,〔(【引用サイトリンク】 work=The Gymnosperm Database )〕 araar〔but it is ambiguous arabic name also given to ''Juniperus phoenicea''〕 or Sictus tree) is a genus of evergreen coniferous tree in the cypress family Cupressaceae, containing only one species, ''Tetraclinis articulata'', also known as Thuja articulata,〔(Memidex: sandarac (wood) ) Retrieved 2012-05-16〕 sandarac, sandarac tree〔(Collins: sandarac and sandarac tree ) Retrieved 2012-05-16〕 or Barbary thuja,〔(Jacques Blondel & James Aronson: ''Biology and Wildlife of the Mediterranean Region'', Oxford University Press 1999 ) Retrieved 2012-05-16〕 endemic to the western Mediterranean region. It is native to northwestern Africa in the Atlas Mountains of Morocco, Algeria and Tunisia, with two small outlying populations on Malta, and near Cartagena in southeast Spain. It grows at relatively low altitudes in a hot, dry subtropical Mediterranean climate.〔Farjon, A. (2005). ''Monograph of Cupressaceae and Sciadopitys''. Royal Botanic Gardens, Kew. ISBN 1-84246-068-4〕 Its closest relatives are ''Platycladus, Microbiota'' and ''Calocedrus'', with the closest resemblance to the latter. In older texts, it was sometimes treated in ''Thuja'' or ''Callitris'', but it is less closely related to those genera.〔 It is a small, slow-growing tree, to 6–15 m (rarely 20 m) tall and 0.5 m (rarely 1 m) trunk diameter, often with two or more trunks from the base. The foliage forms in open sprays with scale-like leaves 1–8 mm long and 1–1.5 mm broad; the leaves are arranged in opposite decussate pairs, with the successive pairs closely then distantly spaced, so forming apparent whorls of four. The cones are 10–15 mm long, green ripening brown in about 8 months from pollination, and have four thick scales arranged in two opposite pairs. The seeds are 5–7 mm long and 2 mm broad, with a 3–4 mm broad papery wing on each side.〔〔Rushforth, K. (1999). ''Trees of Britain and Europe''. Collins ISBN 0-00-220013-9.〕 It is one of only a small number of conifers able to coppice (re-grow by sprouting from stumps), an adaptation to survive wildfire and moderate levels of browsing by animals. Old trees that have sprouted repeatedly over a long period form large burls at the base, known as ''lupias''.〔 ==Uses and symbolism== It is the national tree of Malta, where it is known as ''għargħar'' (derived from the Arabic name ''araar''). It is now being used locally in afforestation projects. The resin, known as sandarac, is used to make varnish and lacquer; it is particularly valued for preserving paintings. The wood, known as thuya wood〔( 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「Tetraclinis」の詳細全文を読む スポンサード リンク
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