Widdringtonia wallichii
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| File:Widdringtonia wallichii (Widdringtonia cedarbergensis) - Mendocino Coast Botanical Gardens - DSC02048.JPG | |
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W. wallichii
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| Widdringtonia wallichii Endl. ex Carrière
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Widdringtonia wallichii previously Widdringtonia cedarbergensis (Clanwilliam Cedar or Clanwilliam Cypress)[2][3] 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[4][5][6] and protected in South Africa under the National Forest Act (Act 84) of 1998.[7]
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.[4]
The tree is widely known as the "Clanwilliam Cedar" but botanists have recommended the name Clanwilliam Cypress to better reflect its botanical relationships.[8]
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%).[9] The wood oil contains thujopsene (47.1%), α-cedrol (10.7%), widdrol (8.5%) and cuparene (4.0%).[9]
See also
References
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- ↑ 4.0 4.1 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.
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
- ↑ University of the Witwatersrand: Recommended English names for trees of Southern Africa
- ↑ 9.0 9.1 Lua error in package.lua at line 80: module 'strict' not found.
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