| 词条 | Quercus acuta |
| 释义 |
|name = Japanese evergreen oak |image = Quercus acuta3.jpg |image2 = Quercus acuta2.jpg |genus = Quercus |parent = Quercus subg. Cyclobalanopsis |species = acuta |authority = Thunb. |synonyms_ref = [1] |synonyms ={{collapsible list|bullets = true |Cyclobalanopsis acuta (Thunb.) Oerst. |Cyclobalanopsis acutiformis (Nakai) Nakai |Cyclobalanopsis buergeri (Blume) Oerst. |Cyclobalanopsis laevigata (Blume) Oerst. |Cyclobalanopsis marginata (Blume) Oerst. |Quercus buergeri Blume |Quercus carpostachys H.Lév. & Vaniot |Quercus kasaimok H.Lév. ex Nakai |Quercus kusaiensis H.Lév. ex Rehder |Quercus laevigata Blume |Quercus marginata Blume |Quercus pseudoglauca H.Lév. ex Nakai |Quercus quelpaertensis H.Lév. ex Nakai |}}}}Quercus acuta, the Japanese evergreen oak, is an oak native to Japan, South Korea, Taiwan, and China's Guizhou Province and Guangdong Province.[2] DescriptionDue to its foliage and habitat, it looks rather unlike most other oaks. Quercus acuta is usually bushy and densely domed, reaching a height of 14 meters. The bark is smooth and dark grey. Leaves are dark and glossy above and yellowish beneath. They narrow to a long, finely-rounded tip. The flowers are on a stiff 5 cm catkin. Heartwood is pale reddish brown to reddish brown. Sapwood is pale yellowish brown with a slightly reddish color.[3] Common namesIn Japan, it is called akagashi (赤樫 - あかがし), but is also known by the names oogashi (大樫 - オオガシ) and oobagashi (大葉樫 - オオバガシ).[4] [5] UsesLike shirakashi (白樫 - しらかし) (Quercus myrsinifolia), whose wood is often called shirokashi outside of Japan, and other related sub-genera, Japanese Evergreen Oak, or akagashi, is a preferred choice for Japanese martial arts practice weapons such as bokken.[6][7] This is due to its uniformly tight grain structure resulting from its continuous growing season. It should not be confused with the oriental or Asian white oak, Quercus aliena. References1. ^The Plant List, Quercus acuta Thunb. {{Taxonbar|from=Q1075957}}{{Quercus-stub}}2. ^"Quercus acuta"Oaks of the World Accessed 8 April 2011. 3. ^木材図鑑 - Picture Book of Woods Accessed 22 March 2017. {{Ja icon}} 4. ^TSUYUZAKI Shiro's Plant List - Hokkaido University 5. ^植物和名ー学名インデックス YList - The YList Botanical Name - Scientific Name Index Accessed 22 March 2017. {{Ja icon}} 6. ^Zaimoku - Wood for Weapons Accessed 22 March 2017. 7. ^James Goedkoop: "Woods for Training Weapons". Aikiweb Accessed 10 November 2012. 5 : Quercus|Trees of Japan|Trees of Korea|Trees of China|Plants described in 1784 |
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