Platycladus
Chinese arborvitae | |
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Platycladus orientalis in its natural habitat in Simatai, Great Wall of China | |
Scientific classification | |
Kingdom: | Plantae |
Clade: | Tracheophytes |
Clade: | Gymnospermae |
Division: | Pinophyta |
Class: | Pinopsida |
Order: | Cupressales
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Family: | Cupressaceae |
Subfamily: | Cupressoideae
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Genus: | Platycladus Spach |
Species: | P. orientalis
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Binomial name | |
Platycladus orientalis | |
Synonyms[3] | |
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Platycladus is a
Description
A
The branches are relatively short, loosely arranged and, usually, sharply directed upwards, and the bark, brownish, is detached in narrow vertical strips. The twigs are compressed and are arranged in vertical planes. The leaves, arranged in four rows, fleshy, opposite,
Taxonomy
Although generally accepted as the only member of its genus, it has been suggested that the closely related species
Etymology
The binomial Platycladus means "with broad or flattened shoots" deriving from Greek πλατύς platys "broad, flat, level" and κλάδος klados "branch, shoot of a tree".[8] The qualifier orientalis refers to its native habitat in China.[9]
Distribution
It is native to northwestern China, but it is difficult to distinguish the areas where they are native safely from those where they have been introduced. It is distributed in Manchuria, Russian Far East (Amur and Khabarovsk), and now it is naturalised in Korea, Japan, India, Florida and Iran as well. It is also cultivated in many parts of the world in parks, gardens, home yards, cemeteries and for hedges.[10]
Uses
Resistant to drought, it is very often used as an ornamental tree, both in its homeland, where it is associated with long life and vitality, and very widely elsewhere in
The wood is used in Buddhist temples both for (lavairos) construction work, and chipped, for incense burning. Its twigs and leaves contain 0.12% essential oil containing pinene and probably caryophyllene.[13] Its use as a memorial tree dates back to the Zhou dynasty in China, where it was the official memorial tree of princes.[14]
Gallery
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Habit of young plant
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Platycladus orientalis, Morton Arboretum acc. 168-53#3[15]
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Mature trees
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Mature tree
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Very young female cones
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Immature seed cones
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Mature cones, with seeds visible
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Mature cones
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P. orientalis 'Rosedalis'
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P. orientalis 'Rosedalis' leaf
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P. orientalis 'Semperaurea' in winter
References
- . Retrieved 19 November 2021.
- ^ "Platycladus". Germplasm Resources Information Network. Agricultural Research Service, United States Department of Agriculture. Retrieved 2008-02-19.
- ^ a b "Platycladus". World Checklist of Selected Plant Families (WCSP). Royal Botanic Gardens, Kew.
- ^ BSBI List 2007 (xls). Botanical Society of Britain and Ireland. Archived from the original (xls) on 2015-06-26. Retrieved 2014-10-17.
- ^ USDA, NRCS (n.d.). "Platycladus orientalis". The PLANTS Database (plants.usda.gov). Greensboro, North Carolina: National Plant Data Team. Retrieved 7 October 2015.
- ^ Fu, Liguo; Yu, Yong-fu; Adams, Robert P.; Farjon, Aljos. "Platycladus orientalis". Flora of China. Vol. 4 – via eFloras.org, Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
- ^ Kremer BP, Trees, Editorial Blume, Barcelona, 1986, Thuja orientalis L., p. 78
- Perseus Project.
- ISBN 9781845337315.
- ^ Armin Jagel, Veit Martin Doerken: Morphology and morphogenesis of the seed cones of the Cupressaceae - part II: Cupressoideae. Bull. CCP 4 (2), 2015, pp. 51-78
- ^ "RHS Plant Selector - Platycladus orientalis 'Aurea Nana'". Retrieved 6 February 2021.
- ^ "AGM Plants - Ornamental" (PDF). Royal Horticultural Society. July 2017. p. 79. Retrieved 2 May 2018.
- ^ Armin Jagel, Thomas Stützel: Studies on the morphology and morphogenesis of the seed cones of Platycladus orientalis (L.) Franco (= Thuja orientalis L.) and Microbiota decussata Kom. (Cupressaceae) . Bot. Year syst. Bd. 123, 2001, pp. 337-404.
- ISBN 0-8122-1070-0.)
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: CS1 maint: date and year (link - ^ Cirrus Digital: Platycladus orientalis Morton Arboretum accession 168-53#3
General references
- Gymnosperm Database - Platycladus orientalis
- Arboretum de Villardebelle - Platycladus cone photos
- Conifers Around the World: Platycladus orientalis - Oriental Arborvitae Archived 2013-09-29 at the Wayback Machine.
- "Thuja orientalis". Plants for a Future.