Thuja koraiensis

Cupressaceae Thuja koraiensis Nakai

Etymology
Thuja refers to ‘resinous tree’; indicating these trees are quite resinous.
koraiensis refers to Korea; indicating its habitat

Colloquial Name
Korean arborvitae

Distribution

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TDWG Codes
3, 36, CHM, CHM-JL, 38, KOR, KOR-NK, KOR-SK

Habitat
The natural habitats for Thuja koraiensis are temperate forests. The natural elevation is unknown. There are no conifers associated with Thuja koraiensis that are known of.

USDA Hardiness zone – 5
Thuja koraiensis is hardy to USDA Zone 5 (Bannister & Neuner, 2001), meaning its frost tolerance lies somewhere in the range of -28.9C (-20F) to -23.3C (-10F).

Species Continuity
The population trend for Thuja koraiensis is decreasing. There are ongoing threats for Thuja koraiensis and they are listed as follows:

• 1 Habitat Loss & Degradation
  • 1.5 Direct Human Disturbance
• 2 Overexploitation & Resource Use
  • 2.1 Logging & Wood Harvesting

IUCN Category – VU
According to the IUCN Red List, Thuja koraiensis has been assigned the status of VU(Vulnerable). This means that according to the Red List criteria, this species qualifies as Vulnerable and is of risk.

Superordinate Taxa
The nearest superordinate taxon for Thuja koraiensis is Thuja. The coordinate taxa for Thuja koraiensis are therefore:

Thuja koraiensis is further placed under Cupressoideae. Thuja koraiensis is also placed under Cupressaceae.

Cultivars
‘Glauca’, ‘Glauca Prostrata’, ‘Pendula’