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Widdringtonia wallichii
''Widdringtonia wallichii'' previously ''Widdringtonia cedarbergensis'' (''Clanwilliam Cedar'' or ''Clanwilliam Cypress'') is a species of ''Widdringtonia'' native to South Africa, where it is endemic to the Cederberg Mountains northeast of Cape Town in Western Cape Province. It is threatened by habitat loss〔Farjon, A. (2005). ''Monograph of Cupressaceae and ''Sciadopitys. Royal Botanic Gardens, Kew. ISBN 1-84246-068-4〕〔Hilton-Taylor, C. et al. 1998. (''Widdringtonia cedarbergensis'' ). Downloaded on 10 July 2007.〕〔Pauw, C. A. & Linder, H. P. 1997. ''Widdringtonia'' systematics, ecology and conservation status. ''Bot. J. Linn. Soc.'' 123: 297-319.〕 and protected in South Africa under the National Forest Act (Act 84) of 1998.〔(【引用サイトリンク】title=Protected Trees )〕
It is a small evergreen tree growing to 5–7 m (rarely to 20 m) tall. The leaves are scale-like, 1.5 mm long and 1 mm broad on small shoots, up to 15 mm long on strong-growing shoots, and arranged in opposite decussate pairs. The cones are globose to rectangular, 2–3 cm long, with four scales.〔
The tree is widely known as the "Clanwilliam Cedar" but botanists have recommended the name Clanwilliam Cypress to better reflect its botanical relationships.〔University of the Witwatersrand: (Recommended English names for trees of Southern Africa )〕
==Chemical constituents==
The essential oil derived from leaves contains terpinen-4-ol (36.0%), sabinene (19.2%), γ-terpinene (10.4%), α-terpinene (5.5%) and myrcene (5.5%). The wood oil contains thujopsene (47.1%), α-cedrol (10.7%), widdrol (8.5%) and cuparene (4.0%).〔
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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