Thuja koraiensis

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Thuja koraiensis
Thuja koraiensis PAN foliage 2.JPG
Scientific classification Red Pencil Icon.png
Domain: Eukaryota
Kingdom: Plantae
Clade: Tracheophytes
Division: Pinophyta
Class: Pinopsida
Order: Pinales
Family: Cupressaceae
Genus: Thuja
Species:
T. koraiensis
Binomial name
Thuja koraiensis

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. [3] [4]

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. [4]

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.

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Thuja is a genus of coniferous trees in the Cupressaceae. There are five species in the genus, two native to North America and three native to eastern Asia. The genus is monophyletic and sister to Thujopsis. Members are commonly known as arborvitaes, thujas or cedars.

<i>Thuja occidentalis</i> Species of evergreen coniferous tree

Thuja occidentalis, also known as northern white cedar, eastern white cedar, or arborvitae, is an evergreen coniferous tree, in the cypress family Cupressaceae, which is native to eastern Canada and much of the northcentral and northeastern United States. It is widely cultivated as an ornamental plant.

<i>Platycladus</i>

Platycladus is a monotypic genus of evergreen coniferous tree in the cypress family Cupressaceae, containing only one species, Platycladus orientalis, also known as Chinese thuja, Oriental arborvitae, Chinese arborvitae, biota or Oriental thuja. It is native to northeastern parts of East Asia and North Asia, but is also now naturalised as an introduced species in other regions of the Asian continent.

<i>Thujopsis</i>

Thujopsis is a genus of conifers in the cypress family (Cupressaceae), the sole member of which is Thujopsis dolabrata. It is endemic to Japan, where it is named asunaro (あすなろ). It is similar to the closely related genus Thuja (arborvitae), differing in the broader, thicker leaves and thick cones. It is also called hiba, false arborvitae, or hiba arborvitae.

<i>Pinus koraiensis</i>

Pinus koraiensis is a species of pine known commonly as the Korean pine. It is native to eastern Asia: Korea, northeastern China, Mongolia, the temperate rainforests of the Russian Far East, and central Japan. In the north of its range, it grows at moderate elevations, typically 600 to 900 metres, whereas further south, it is a mountain tree, growing at 2,000 to 2,600 m elevation in Japan. Other common names include Chinese pinenut.

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<i>Prumnopitys ferruginea</i>

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<i>Thuja standishii</i>

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<i>Tetraclinis</i>

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<i>Abies koreana</i> Species of plant

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<i>Picea koraiensis</i>

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<i>Cupressus funebris</i>

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<i>Cupressus cashmeriana</i>

Cupressus cashmeriana, the Bhutan cypress, or Kashmir cypress, is a species of evergreen conifer native to the eastern Himalaya in Bhutan and adjacent areas of Arunachal Pradesh in northeastern India. It is also introduced in China and Nepal. It grows at moderately high altitudes of 1,250–2,800 metres (4,100–9,190 ft).

<i>Juniperus deppeana</i>

Juniperus deppeana is a small to medium-sized tree reaching 10–15 m tall. It is native to central and northern Mexico and the southwestern United States. It grows at moderate altitudes of 750–2,700 meters (2,460–8,860 ft) on dry soils.

<i>Calocedrus formosana</i>

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<i>Abies nephrolepis</i>

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<i>Juniperus rigida</i>

Juniperus rigida, the temple juniper, is a species of juniper, native to northern China, Mongolia, Korea, Japan, and the far southeast of Russia, occurring at altitudes of 10-2,200 m. The species is also naturalized in the United States. It is closely related to Juniperus communis and Juniperus conferta, the latter sometimes treated as a variety or subspecies of J. rigida.

References

  1. 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 .
  2. 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.
  3. Conifer Specialist Group 1998. Thuja koraiensis. Downloaded on 10 July 2007.
  4. 1 2 Farjon, A. (2005). Monograph of Cupressaceae and Sciadopitys. Royal Botanic Gardens, Kew. ISBN   1-84246-068-4