Quercus acuta

Quercus acuta, the Japanese evergreen oak, is an oak native to Japan, South Korea, Taiwan, and China's Guizhou Province and Guangdong Province.[3]

Japanese evergreen oak

Least Concern  (IUCN 3.1)[1]
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Fagales
Family: Fagaceae
Genus: Quercus
Subgenus: Quercus subg. Cyclobalanopsis
Species:
Q. acuta
Binomial name
Quercus acuta
Synonyms[2]

Description

Due 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.[4]

Common names

In 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).[5] [6]

In the Korean language, it is 붉가시.

Uses

Like 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.[7][8] 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.

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References
  1. Botanic Gardens Conservation International (BGCI) & IUCN SSC Global Tree Specialist Group (2018). "Quercus acuta". The IUCN Red List of Threatened Species. IUCN. 208. e.T62005627A13677623. doi:10.2305/IUCN.UK.2019-1.RLTS.T62005627A136776235.en.
  2. The Plant List, Quercus acuta Thunb.
  3. "Quercus acuta"Oaks of the World Accessed 8 April 2011.
  4. 木材図鑑 - Picture Book of Woods Accessed 22 March 2017. (in Japanese)
  5. TSUYUZAKI Shiro's Plant List - Hokkaido University
  6. 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. (in Japanese)
  7. Zaimoku - Wood for Weapons Accessed 22 March 2017.
  8. James Goedkoop: "Woods for Training Weapons". Aikiweb Accessed 10 November 2012.


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