| 词条 | Chamaecyparis taiwanensis |
| 释义 |
| image = | image_caption = | status = VU | status_system = IUCN3.1 | status_ref = | genus = Chamaecyparis | species = taiwanensis | authority = Masam. & Suzuki | synonyms =
}}Chamaecyparis taiwanensis (Taiwan cypress; {{zh|t=臺灣扁柏|s=台湾扁柏|p=tái wān biǎn bǎi}}) is a species of cypress, native to the mountains of Taiwan, where it grows at altitudes of 1300–2800 m.[1][2] DescriptionIt is a slow-growing coniferous tree growing to 40 m tall with a trunk up to 2 m in diameter. The bark is red-brown, vertically fissured and with a stringy texture. The foliage is arranged in flat sprays; adult leaves are scale-like, 0.8–1.5 mm long, with acute tips (unlike the blunt tips of the leaves of the closely related Japanese Chamaecyparis obtusa (Hinoki Cypress), green above, green below with a white stomatal band at the base of each scale-leaf; they are arranged in opposite decussate pairs on the shoots. The juvenile leaves, found on young seedlings, are needle-like, 4–8 mm long. The cones are globose, smaller than those of C. obtusa, 7–9 mm diameter, with 6–10 scales arranged in opposite pairs, maturing in autumn about 7–8 months after pollination.[1] TaxonomyIt is most commonly treated as a variety of Chamaecyparis obtusa in European and American texts,[1] but more often accepted as a distinct species by Taiwanese botanists.[3][4] The two taxa differ in ecological requirements, with C. obtusa growing primarily on drier ridgetop sites, while C. taiwanensis occurs on moist soils and with higher rainfall and air humidity.[1] Related speciesA related cypress also found on Taiwan, Chamaecyparis formosensis (Formosan Cypress), differs in leaves which are green below as well as above without a conspicuous white stomatal band, and longer, slenderer ovoid cones 6–10 mm long with 10–16 scales.[1][2] References1. ^1 2 3 4 {{cite book |title=Monograph of Cupressaceae and Sciadopitys |last=Farjon |first=A. |year= 2005 |publisher=Royal Botanic Gardens |location=Kew |isbn=1-84246-068-4}} {{Cupressaceae}}{{Taxonbar|from=Q5069350}}2. ^1 Rushforth, K. (1987). Conifers. Helm {{ISBN|0-7470-2801-X}}. 3. ^Hwang, S.-Y., Lin, H.-W., Kuo, Y. S., & Lin, T. P. (2001). RAPD variation in relation to population differentiation of Chamaecyparis formosensis and Chamaecyparis taiwanensis. Bot. Bull. Acad. Sinica 42: 173-179 4. ^Hwang, L.-H., Hwang, S.-Y., & Lin, T.-P. (2000). Low Chloroplast DNA Variation and Population Differentiation of Chamaecyparis formosensis and Chamaecyparis taiwanensis. Taiwan J. Forest Sci. Available online 3 : Chamaecyparis|Trees of Taiwan|Endemic flora of Taiwan |
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