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Thuja koraiensis PAN foliage 4

Superregnum: Eukaryota
Regnum: Plantae
Divisio: Tracheophyta
Divisio: Pinophyta
Classis: Pinopsida
Ordo: Pinales

Familia: Cupressaceae
Subfamilia: Cupressoideae
Genus: Thuja
Species Thuja koraiensis
Name

Thuja koraiensis Nakai, Bot. Mag. (Tokyo) 33: 196. 1919.

Synonyms

Heterotypic
Thuja kongoensis Doi ex Nakai, Veg. Diamond Mts. 163. 1918, nom. inval. nom. nud.

References

Nakai, T. 1919. Botanical Magazine (Shokubutsu-gaku zasshi). 33: 196.
USDA, ARS, National Genetic Resources Program. Germplasm Resources Information Network - (GRIN) [Online Database]. [1]

Vernacular names
Deutsch: Koreanischer Lebensbaum
English: Korean Arborvitae
eesti: Korea elupuu
suomi: Koreantuija
français: Thuya de Corée
한국어: 눈측백
norsk: Koreatuja
русский: Туя корейская
Türkçe: Kore mazısı
中文: 朝鲜崖柏

Thuja koraiensis, also called Korean arborvitae,[2] is a species of Thuja, native to Korea and the extreme northeast of China (Changbaishan). Its current status is poorly known; the small population in China is protected in the Changbaishan Nature Reserve, as is the small population in Soraksan Nature Reserve in northern South Korea, but most of the species' range in North Korea is unprotected and threatened by habitat loss.[1][3]

It is an evergreen shrub or small tree growing to 3–10 m tall. The foliage forms flat sprays with scale-like leaves 2–4 mm long (up to 15 mm long on strong-growing shoots), matt dark green above, and with broad, vivid white stomatal wax bands below. The cones are oval, yellow-green ripening red-brown, 7–11 mm long and 4–5 mm broad (opening to 6–9 mm broad), with 8-12 overlapping scales.[3]

It is occasionally grown as an ornamental tree for the contrast between the green upper and bright white lower sides of the foliage, though planting is limited by the low availability of seeds.
References

Kim, Y.-S.; Chang, C.-S.; Lee, H.; Gardner, M. (2011). "Thuja koraiensis". IUCN Red List of Threatened Species. 2011: e.T31245A9619180. doi:10.2305/IUCN.UK.2011-2.RLTS.T31245A9619180.en. Retrieved 16 November 2021.
English Names for Korean Native Plants (PDF). Pocheon: Korea National Arboretum. 2015. p. 656. ISBN 978-89-97450-98-5. Archived from the original (PDF) on 25 May 2017. Retrieved 17 December 2016 – via Korea Forest Service.
Farjon, A. (2005). Monograph of Cupressaceae and Sciadopitys. Royal Botanic Gardens, Kew. ISBN 1-84246-068-4

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