Cupressus | |
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Cupressus sempervirens | |
Scientific classification | |
Kingdom: | Plantae |
Clade: | Tracheophytes |
Clade: | Gymnospermae |
Division: | Pinophyta |
Class: | Pinopsida |
Order: | Cupressales |
Family: | Cupressaceae |
Subfamily: | Cupressoideae |
Genus: | Cupressus L. |
Type species | |
Cupressus sempervirens | |
Species | |
See text | |
Synonyms [1] | |
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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. [2] [3] The common name "cypress" comes via the Old French cipres from the Latin cyparissus, which is the latinisation of the Greek κυπάρισσος (kypárissos). [4]
Cypress are evergreen trees or large shrubs, growing to 5–40 m (16–131 ft) tall, exceptionally up to 102 m tall (the second-tallest tree species on earth, after Sequoia sempervirens ) in Cupressus austrotibetica . [5] The leaves are scale-like, 2–6 mm long, arranged in opposite decussate pairs, and persist for three to five years. On young plants up to two years old, the leaves are needle-like and 5–15 mm long. The cones are 8–40 mm long, globose or ovoid with 4 to 14 scales arranged in opposite decussate pairs; they are mature in 18–24 months from pollination. The seeds are small, 4–7 mm long, with two narrow wings, one along each side of the seed.
Many of the species are adapted to forest fires, holding their seeds for many years in closed cones until the parent trees are killed by a fire; the seeds are then released to colonise the bare, burnt ground. In other species, the cones open at maturity to release the seeds.
As currently treated, these cypresses are native to scattered localities in mainly warm temperate regions in the Northern Hemisphere, including northwest Africa, the Middle East, the Himalayas, southern China and northern Vietnam. [1] As with other conifers, extensive cultivation has led to a wide variety of forms, sizes and colours, that are grown in parks and gardens throughout the world. [6]
Many species of cypress are grown as decorative trees in parks and, in Asia, around temples; in some areas, the native distribution is hard to discern due to extensive cultivation. A few species are grown for their timber, which can be very durable. The fast-growing hybrid Leyland cypress (Cupressus × leylandii), much used in gardens, draws one of its parents from this genus ( Cupressus macrocarpa , Monterey cypress); the other parent, Callitropsis nootkatensis (Nootka cypress), is also sometimes classified in this genus, or else in the separate genus Xanthocyparis , but in the past more usually in Chamaecyparis .
It was believed in the Hellenic culture that the cypress tree was sacred to the gods and it is now used as an emblem of grief. The name of the genus comes from Cyparissus, a young man loved by Apollo, very attached to a deer which he ended up killing by mistake during a hunting trip. To ease the pain Apollo transformed the boy into a plant. The association with mourning continued in Roman times, up to the present day, also for a practical reason: the roots of the cypress are straight into the ground, and expand slightly laterally, not damaging the burials.
There has long been significant uncertainty about the New World members of Cupressus, with several studies recovering them as forming a distinct clade from the Old World members. A 2021 molecular study found Cupressus to be the sister genus to Juniperus , whereas the western members (classified in Callitropsis and Hesperocyparis ) were found to be sister to Xanthocyparis . [7]
Stull et al. 2021 [7] [8] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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The number of species recognised within this genus varies sharply, from 16 to 25 or more according to the authority followed, because most populations are small and isolated, and whether they should be accorded specific, subspecific or varietal rank is difficult to ascertain. Current tendencies are to reduce the number of recognised species; when a narrow species concept is adopted, the varieties indented in the list below may also be accepted as distinct species. See also the New World species (below) for a likely split in the genus in the future.
The Old World cypresses tend to have cones with more scales (8–14 scales, rarely 6 in C. funebris), each scale with a short broad ridge, not a spike. C. sempervirens is the type species of the genus, defining the name Cupressus. They are more closely related to Juniperus than to the New World species, with the exception of the Vietnamese golden cypress, which is more closely related to New World species. [7]
Image | Cone | Name | Common Name | Distribution |
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Cupressus atlantica | Moroccan cypress | western Morocco | ||
Cupressus cashmeriana | Bhutan cypress | eastern Himalaya in Bhutan and adjacent areas of Arunachal Pradesh in northeastern India | ||
Cupressus chengiana | Cheng's cypress | Gansu and Sichuan Provinces, China | ||
Cupressus duclouxiana (syn: Cupressus austrotibetica) [9] | Yunnan cypress, South Tibet cypress | Yunnan and Sichuan, China | ||
Cupressus dupreziana | Saharan cypress | southeast Algeria | ||
Cupressus funebris | Chinese weeping cypress | southwestern and central China | ||
Cupressus gigantea | Tibetan cypress | Southeast Tibet - China | ||
Cupressus sempervirens | Mediterranean cypress, type species | northeast Libya, southern Albania, coastal Bulgaria, southern Ukraine (Crimea), coastal Croatia, southern Montenegro, southern Bosnia and Herzegovina, southern Greece, southern Turkey, Cyprus, northern Egypt, western Syria, Lebanon, Malta, Italy, Tunisia, Israel, western Jordan, and Iran | ||
Cupressus torulosa (syn: Cupressus tonkinensis) | Tonkin cypress, Himalayan cypress | Sichuan of China and in Vietnam | ||
Cupressus vietnamensis (syn: Xanthocyparis vietnamensis) | Vietnamese cypress, Vietnamese golden cypress | Vietnam |
The New World cypresses tend to have cones with fewer scales (4–8 scales, rarely more in C. macrocarpa), each scale with an often prominent narrow spike. Recent genetic evidence [10] shows they are less closely related to the Old World cypresses than previously thought, being more closely related to Xanthocyparis than to the rest of Cupressus. These species have recently been transferred to Hesperocyparis and Callitropsis . New World species are found in marginal habitats with xeric soils, and therefore exhibit a fragmented allopatric pattern of distribution. This type of distribution results in disproportionate local abundance with most species restricted to small neighboring populations. [11]
Image | Cone | Name | Common Name | Distribution |
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Cupressus abramsiana (Cupressus goveniana var. abramsiana; Callitropsis abramsiana;) | Santa Cruz cypress | Santa Cruz Mountains of Santa Cruz and San Mateo Counties in west-central California | ||
Cupressus arizonica (Callitropsis arizonica) | Arizona cypress | southwestern United States (Arizona, Utah, southwestern New Mexico, and southern California, with a few populations in southern Nevada and in the Chisos Mountains of western Texas), and in Mexico (Coahuila, Nuevo León, Chihuahua, Sonora, Durango, Tamaulipas, Zacatecas and northern Baja California). | ||
Cupressus bakeri (Callitropsis bakeri) | Modoc cypress | northern California and extreme southwestern Oregon | ||
Cupressus forbesii (Callitropsis forbesii) | Tecate cypress | Santa Ana Mountains of Orange County and in San Diego County within Southern California, and in northern Baja California state of Mexico. | ||
Cupressus glabra (Callitropsis glabra) | smooth Arizona cypress | Sedona, Arizona | ||
Cupressus goveniana (Callitropsis goveniana) | Gowen cypress, Californian cypress | Monterey County, California | ||
Cupressus guadalupensis (Callitropsis guadalupensis ) | Guadalupe cypress | Mexico, found only on Guadalupe Island | ||
Cupressus lusitanica (Callitropsis lusitanica ) | Mexican cypress | Mexico and Central America (Guatemala, El Salvador and Honduras) | ||
Cupressus macnabiana (Callitropsis macnabiana ) | Macnab cypress | northern California | ||
Cupressus macrocarpa (Callitropsis macrocarpa ) | Monterey cypress | Cypress Point in Pebble Beach and at Point Lobos near Carmel, California | ||
Cupressus nevadensis (Callitropsis nevadensis ) | Piute cypress | Southern Sierra Nevada, within Kern County, California and Tulare County. | ||
Cupressus nootkatensis (syn: Xanthocyparis nootkatensis) | Nootka cypress | Vancouver Island, British Columbia, Canada | ||
Cupressus pygmaea (Cupressus goveniana var. pygmaea; Callitropsis pigmaea ) | Mendocino cypress | Mendocino and Sonoma Counties in northwestern California | ||
Cupressus revealiana | El Rincon cypress | Baja California in northwestern Mexico | ||
Cupressus sargentii (Callitropsis sargentii) | Sargent cypress | Mendocino County southwards to Santa Barbara County California | ||
Cupressus stephensonii (Callitropsis stephensonii ) | Cuyamaca cypress | San Diego County California | ||
All plants in the genus Cupressus, including New World Cupressus (now Callitropsis), are extremely allergenic, and have an OPALS allergy scale rating of 10. In warm, Mediterranean climates, these plants release large quantities of pollen for approximately seven months each year. [12]
Cypress is a common name for various coniferous trees or shrubs from the Cupressus genus of the Cupressaceae family, typically found in warm-temperate and subtropical regions of Asia, Europe, and North America.
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.
Hesperocyparis macrocarpa also known as Cupressus macrocarpa, or the Monterey cypress is a coniferous tree, and is one of several species of cypress trees endemic to California.
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".
The Leyland cypress, Cupressus × leylandii, × Cuprocyparis leylandii or × Cupressocyparis leylandii, often referred to simply as leylandii, is a fast-growing coniferous evergreen tree much used in horticulture, primarily for hedges and screens. Even on sites of relatively poor culture, plants have been known to grow to heights of 15 metres (49 ft) in 16 years. Their rapid, thick growth means they are sometimes used to achieve privacy, but such use can result in disputes with neighbours whose own property becomes overshadowed. The tree is a hybrid of Monterey cypress and Nootka cypress. It is almost always sterile, and is propagated mainly by cuttings.
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.
Taiwania, with the single living species Taiwania cryptomerioides, is a large coniferous tree in the cypress family Cupressaceae.
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.
Hesperocyparis arizonica, the Arizona cypress, is a North American species of tree in the cypress family Cupressaceae, native to the southwestern United States and Mexico. Populations may be scattered rather than in large, dense stands.
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.
Libocedrus is a genus of five species of coniferous trees in the cypress family Cupressaceae, native to New Zealand and New Caledonia. The genus is closely related to the South American genera Pilgerodendron and Austrocedrus, and the New Guinean genus Papuacedrus, both of which are included within Libocedrus by some botanists. These genera are rather similar to the Northern Hemisphere genera Calocedrus and Thuja: in earlier days, what is now Calocedrus was sometimes included in Libocedrus. They are much less closely related, as recently confirmed. The generic name means "teardrop cedar", apparently referring to drops of resin.
Hesperocyparis pygmaea, the Mendocino cypress or pygmy cypress, is a taxon of disputed status in the western cypress genus. It is endemic to certain coastal terraces and coastal mountain ranges of Mendocino and Sonoma Counties in northwestern California. It is a variable tree, and closely related to Hesperocyparis abramsiana and Hesperocyparis goveniana, enough to sometimes be considered conspecific with them.
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.
Hesperocyparis lusitanica, the Mexican cypress, cedar-of-Goa or Goa cedar, is a species of cypress native to Mexico and Central America. It has also been introduced to Belize, Costa Rica and Nicaragua, growing at 1,200–3,000 metres (3,900–9,800 ft) altitude.
Actinostrobus acuminatus, commonly known as dwarf cypress, creeping pine or Moore 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, where it can be found along the shorelines of rivers. The Mount Henry Peninsula is an example of the environment in which this cypress is found. It shares the common name dwarf cypress with several other plants, and shares the name creeping pine with others.
Hesperocyparis macnabiana is a species of western cypress in from California that was previously named Cupressus macnabiana.
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.
Hesperocyparis sargentii is a species of conifer in the family Cupressaceae known by the common name Sargent's cypress. It is endemic to California, where it is known from Mendocino County southwards to Santa Barbara County. This taxon is limited to the Coast Range mountains. It grows in forests with other conifers, as well as chaparral and other local mountain habitat, usually in pure stands on serpentine soils. It generally grows 10 to 15 meters tall, but it is known to exceed 22 meters. On Carson Ridge in Marin County, as well as Hood Mountain in Sonoma County, the species comprises a pygmy forest of trees which do not attain heights greater than 240–360 cm due to high mineral concentrations in the serpentine soil.
Libocedrus chevalieri is a species of conifer in the cypress family, Cupressaceae. It is endemic to New Caledonia, occurring in three small, isolated populations on low mountain summits at 650–1,620 m altitude in cloud forest scrub on serpentine soils. It is threatened by habitat loss.
Hesperocyparis is a genus of trees in the family Cupressaceae, containing North American species otherwise assigned to the genus Cupressus. They are found throughout western North America. Only a few species have wide ranges, with most being restricted-range endemics.
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