| Taiwania Temporal range: | |
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Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Gymnospermae |
| Division: | Pinophyta |
| Class: | Pinopsida |
| Order: | Cupressales |
| Family: | Cupressaceae |
| Subfamily: | Taiwanioideae |
| Genus: | Taiwania Hayata |
| Species: | T. cryptomerioides |
| Binomial name | |
| Taiwania cryptomerioides | |
| Synonyms [2] | |
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Taiwania, with the single living species Taiwania cryptomerioides, is a large coniferous tree in the cypress family Cupressaceae.
Taiwania means 'from Taiwan', while cryptomerioides means 'resembling Cryptomeria . [3]
The genus was formerly placed in the segregate family Taxodiaceae, it is now included in the monotypic subfamily Taiwanioideae of the family Cupressaceae. [4] It is the second most basal member of the living Cupressaceae, with only Cunninghamia being more basal. Its lineage is thought to have diverged from the rest of Cupressaceae during the Middle Jurassic. [5] The oldest fossil assignable to the genus is from the mid-Cretaceous (Albian-Cenomanian) of Alaska. [6] Other fossils of the genus are known from the Late Cretaceous of Asia, the Eocene of Asia and North America, and the Miocene of Europe and Asia. [7]
It is native to eastern Asia, growing in the mountains of central Taiwan, and locally in southwest China (Guizhou, Hubei, Sichuan, Yunnan, Tibet) and adjoining Myanmar, and northern Vietnam. [2] [4] It is endangered by illegal logging for its valuable wood in many areas. It is very likely that the range was more extensive in the past before extensive felling for the wood. [1] The populations in mainland Asia were treated as a distinct species Taiwania flousiana by some botanists, but the cited differences between these and the Taiwanese population are not consistent when a number of specimens from each area are compared.
It is one of the largest tree species in Asia, reported to heights of up to 90 m (300 ft) tall and with a trunk up to 4 m (13 ft) diameter above buttressed base. [8] The leaves are needle-like or awl-like and 8–15 mm (0.31–0.59 in) long on young trees up to about 100 years old, then gradually becoming more scale-like, 3–7 mm (0.12–0.28 in) long, on mature trees. The cones are small, 15–25 mm (0.59–0.98 in) long, with about 15–30 thin, fragile scales, each scale with two seeds.
The genus is named after the country of Taiwan, from where it first became known to the botanical community in 1910.
The wood is soft, but durable and attractively spicy scented, and was in very high demand in the past, particularly for temple building and coffins. The rarity of the tree and its slow growth in plantations means legal supplies are now very scarce; the species has legal protection in China and Taiwan.
Taiwania is also a journal that is published by National Taiwan University in Taiwan.
In 2022 a team of researchers measured a 79.1 meters (259.5 feet) Taiwania specimen in Shei-pa National Park. The tree was growing at an elevation of 2,000m. [9]
In 2023 a specimen was found measuring 84.1 meters in height. [10]
Thuja is a genus of coniferous tree or shrub 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.
Metasequoia, or dawn redwood, is a genus of fast-growing coniferous trees, one of three species of conifers known as redwoods. The living species Metasequoia glyptostroboides is native to Lichuan county in Hubei province, China. Although the shortest of the redwoods, it grows to at least 165 feet in height. Local villagers refer to the original tree from which most others derive as Shuǐshān (水杉), or "water fir", which is part of a local shrine. Since its rediscovery in 1944, the dawn redwood has become a popular ornamental, with examples found in various parks in a variety of countries.
Cupressaceae or the cypress family is a family of conifers. The family includes 27–30 genera, which include the junipers and redwoods, with about 130–140 species in total. They are monoecious, subdioecious or (rarely) dioecious trees and shrubs up to 116 m (381 ft) tall. The bark of mature trees is commonly orange- to red-brown and of stringy texture, often flaking or peeling in vertical strips, but smooth, scaly or hard and square-cracked in some species. The family reached its peak of diversity during the mesozoic era.
Cupressus is one of several genera of evergreen conifers within the family Cupressaceae that have the common name cypress; for the others, see cypress. It is considered a polyphyletic group. Based on genetic and morphological analysis, the genus Cupressus is found in the subfamily Cupressoideae. The common name "cypress" comes via the Old French cipres from the Latin cyparissus, which is the latinisation of the Greek κυπάρισσος (kypárissos).
Chamaecyparis, common names cypress or false cypress, is a genus of conifers in the cypress family Cupressaceae, native to eastern Asia and to the western and eastern margins of the United States. The name is derived from the Greek khamai (χαμαί), meaning "on the earth", and kuparissos (κυπάρισσος) for "cypress".
Tsuga is a genus of conifers in the subfamily Abietoideae of Pinaceae, the pine family. The English-language common name "hemlock" arose from a perceived similarity in the smell of its crushed foliage to that of the unrelated plant hemlock. Unlike the latter, Tsuga species are not poisonous.
Sciadopitys verticillata, the kōyamaki or Japanese umbrella-pine, is a unique conifer endemic to Japan, Sakhalin, and Kuril Islands. It is the sole living member of the family Sciadopityaceae and genus Sciadopitys, a living fossil with no close relatives. The oldest fossils of Sciadopitys are from the Late Cretaceous of Japan, and the genus was widespread in Laurasia during most of the Cenozoic, especially in Europe until the Pliocene. An extinct European relative of this species may have been the primary producer of Baltic amber.
Callitropsis nootkatensis, formerly known as Cupressus nootkatensis, is a species of tree in the cypress family native to the coastal regions of northwestern North America. This species goes by many common names including: Nootka cypress, yellow cypress, Alaska cypress, Nootka cedar, yellow cedar, Alaska cedar, and Alaska yellow cedar. The specific epithet nootkatensis is derived from the species being from the area of Nootka Sound on the west coast of Vancouver Island, Canada. Both locations are named for the older European name Nootka, given the Nuu-chah-nulth First Nation.
Calocedrus, the incense cedar, is a genus of coniferous trees in the cypress family Cupressaceae first described as a genus in 1873. Three species are native to eastern Asia and one to western North America.
Afrocarpus is a genus of conifer of the family Podocarpaceae. Two to six species are recognized. They are evergreen trees native to Africa. Afrocarpus was designated a genus in 1989, when several species formerly classified in Podocarpus and Nageia were reclassified.
Cunninghamia is a genus of one or two living species of evergreen coniferous trees in the cypress family Cupressaceae. They are native to China, northern Vietnam and Laos, and perhaps also Cambodia. They may reach 50 m (160 ft) in height. In vernacular use, it is most often known as Cunninghamia, but is also sometimes called "China-fir". The genus name Cunninghamia honours Dr. James Cunningham, a British doctor who introduced this species into cultivation in 1702 and botanist Allan Cunningham.
Xanthocyparis is a genus of cypresses in the family Cupressaceae. As of August 2021, it has only one species, Xanthocyparis vietnamensis, native to Vietnam and southeast China. It is commonly known as the Vietnamese golden cypress. The Nootka cypress, Cupressus nootkatensis or Callitropsis nootkatensis, was also placed in the genus, but this has been rejected.
Actinostrobus is a genus of coniferous trees in the Cupressaceae. Common names include cypress, sandplain-cypress and cypress-pine, the last of these shared by the closely related genus Callitris.
Athrotaxis is a genus of two to three species of conifers in the cypress family, Cupressaceae. The genus is endemic to western Tasmania, where they grow in high-elevation temperate rainforests.
Papuacedrus papuana is a species in the conifer family Cupressaceae, the sole species in the genus Papuacedrus. Some botanists do not consider this species as forming a distinct genus, but include it in the related genus Libocedrus. It is native to New Guinea and to the Indonesian Province of Maluku.
Actinostrobus pyramidalis, commonly known as swamp cypress, Swan River cypress and King George's cypress pine, is a species of coniferous tree in the Cupressaceae. Like the other species in the genus Actinostrobus, it is endemic to southwestern Western Australia.
Thuja sutchuenensis, the Sichuan thuja, is a species of Thuja, an evergreen coniferous tree in the cypress family Cupressaceae. It is native to China, where it is an endangered local endemic in Chengkou County, on the southern slope of the Daba Mountains.
Calocedrus formosana is a conifer endemic to Taiwan.
Calocedrus macrolepis, commonly known as Chinese incense-cedar; is a species of conifer native to southwest China, northern Vietnam, northern Laos, extreme northern Thailand and northeastern Myanmar.
Sequoioideae, commonly referred to as redwoods, is a subfamily of coniferous trees within the family Cupressaceae, that range in the northern hemisphere. It includes the largest and tallest trees in the world. The trees in the subfamily are amongst the most notable trees in the world and are common ornamental trees.
| Authority control databases: National |
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