Hesperocyparis forbesii

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Hesperocyparis forbesii
Cupressus forbesii Survivor Tree Coal Canyon.JPG
One of the few survivors of 2006 Coal Canyon Fire, Cleveland National Forest
Status TNC G2.svg
Imperiled  (NatureServe) [1]
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Gymnospermae
Division: Pinophyta
Class: Pinopsida
Order: Cupressales
Family: Cupressaceae
Genus: Hesperocyparis
Species:
H. forbesii
Binomial name
Hesperocyparis forbesii
(Jeps.) Bartel (2009)
Cupressus forbesii range map 1.png
Natural range of Hesperocyparis forbesii
Cupressus forbesii & Cupressus guadalupensis range map 4.png
Hesperocyparis forbesii (green)
Hesperocyparis guadalupensis (red)
Synonyms [2]
List
    • Callitropsis forbesii (Jeps.) D.P.Little (2006)
    • Cupressus forbesii Jeps. (1922)
    • Cupressus guadalupensis var. forbesii (Jeps.) Little (1970)
    • Cupressus guadalupensis subsp. forbesii (Jeps.) R.M.Beauch. (1978)
    • Neocupressus guadalupensis var. forbesii (Jeps.) de Laub. (2009)
Tecate cypress in the Otay Mountain Wilderness Tecate CypressOtay.jpg
Tecate cypress in the Otay Mountain Wilderness
Tecate Cypress seed pod Cupressus forbesii seed pod.png
Tecate Cypress seed pod

Hesperocyparis forbesii, with the common names Tecate cypress or Forbes' cypress, [3] is a nonflowering, seed bearing tree species of western cypress native to southwestern North America in California and Baja California. It was formerly known as Cupressus forbesii. [3]

Contents

Distribution

Hesperocyparis forbesii is native to montane chaparral and woodlands habitats in the western Peninsular Ranges. It grows at elevations of 450–1,500 metres (1,480–4,920 ft). [3] The tree is found only in the Santa Ana Mountains of Orange County and in San Diego County within Southern California, and in northern Baja California state of Mexico. [3]

The northernmost stand, in Orange County, which comprises a large area on the upper limits of Coal Canyon and on Sierra Peak in the Santa Ana Mountains, burned in a 2006 wildfire. Very few mature trees survived but regeneration is occurring by the hundreds to thousands. However another wildfire before trees are able to reach cone-producing age, which can be quite old for this species, could extirpate the stand.

Description

Hesperocyparis forbesii reaches 10 metres (33 ft), and is usually without dominant terminal shoot resulting in a multi-trunked tree. The foliage ranges from rich light green to green, and seed cones are dark brown, measuring 20–32 mm. [3]

Hesperocyparis forbesii - Tecate cypress bark, at Guatay Mountain, Cuyamaca Mountains Cupressus forbesii bark.JPG
Hesperocyparis forbesii - Tecate cypress bark, at Guatay Mountain, Cuyamaca Mountains

Taxonomy

Hesperocyparis forbesii was given its first scientific description by the Californian botanist Willis Linn Jepson in 1922. It was named Cupressus forbesii by him. [2] In 1970 Elbert Luther Little published a paper where he argued that it was insufficiently distinct from Cupressus guadalupensis and therefore should be a variety with the name var. forbesii. Ruble Mitchel Beauchamp agreed that it was not sufficiently distinct to be a species, but that it was a subspecies. [2]

In the 2000s studying the DNA showed the two populations to be distinct enough to be once again classified as separate species, though also showed them to be closely related. [4] Research into the genetics of Cupressus and Juniperus as a whole resulted in a number of proposed reorganizations of the genus. The 2009 publication by Jim A. Bartel and others moving most of the North American species to a new genus Hesperocyparis is the proposal that found most acceptance. [5] As of 2024 the name Hesperocyparis forbesii is listed as the accepted species name by Plants of the World Online, [6] World Flora Online, [7] and the USDA Natural Resources Conservation Service PLANTS database. [8]

Hesperocyparis guadalupensis is endemic to Guadalupe Island off Baja California, two hundred fifty miles away from any H. forbesii stands. Molecular testing has shown Hesperocyparis guadalupensis to be slightly more closely related to Hesperocyparis stephensonii .

Major differences between Tecate cypress (Hesperocyparis forbesii) and Guadalupe cypress (Hesperocyparis guadalupensis) are:

Ecology

The Tecate cypress is the only plant on which the rare Thorne's Hairstreak (Callophrys gryneus thornei) lays its eggs. [9]

Cultivation

Tecate cypress has proven to be a successful specimen tree, tolerant of the climate of Coastal California, and its cool temperatures and humidity, where other inland-growing western cypress species: such as Hesperocyparis macnabiana have done poorly in these conditions. A Tecate cypress planted at the San Francisco Botanical Garden is showing vigor and produces viable cones at forty years of age.

Related Research Articles

Cypress is a common name for various coniferous trees or shrubs of northern temperate regions that belong to the family Cupressaceae. The word cypress is derived from Old French cipres, which was imported from Latin cypressus, the latinisation of the Greek κυπάρισσος (kyparissos). Cypress trees are a large classification of conifers, encompassing the trees and shrubs from the cypress family (Cupressaceae) and many others with the word cypress in their common name. Many cypress trees have needle-like, evergreen foliage and acorn-like seed cones.

<span class="mw-page-title-main">Cupressaceae</span> Cypress family of conifers

Cupressaceae is a conifer family, the cypress, with worldwide distribution. 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.

<i>Cupressus</i> Several genera of evergreen conifers

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).

<i>Hesperocyparis macrocarpa</i> Species of conifer

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.

<i>Callitropsis nootkatensis</i> Species of conifer

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 its discovery by Europeans on the lands of a First Nation of Canada, the Nuu-chah-nulth people of Vancouver Island, British Columbia, who were formerly referred to as the Nootka.

<i>Xanthocyparis</i> Genus of conifers in the 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.

<i>Hesperocyparis arizonica</i> Species of conifer

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.

<i>Hesperocyparis bakeri</i> Western North American species of conifer

Hesperocyparis bakeri, previously known Cupressus bakeri, with the common names Baker cypress, Modoc cypress, or Siskiyou cypress, is a rare species of western cypress tree endemic to a small area across far northern California and extreme southwestern Oregon, in the western United States.

<i>Hesperocyparis goveniana</i> Californian species of western cypress

Hesperocyparis goveniana commonly known as Californian cypress and Gowen cypress, is a species of western cypress that is endemic to a small area of coastal California near Monterey. It was formerly classified as Cupressus goveniana.

<span class="mw-page-title-main">Hesperocyparis pygmaea</span> Species of conifer

Cupressus pygmaea, the Mendocino cypress or pygmy cypress, is a taxon of disputed status in the genus Cupressus 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 Cupressus abramsiana and Cupressus goveniana, enough to sometimes be considered conspecific with them.

<i>Hesperocyparis guadalupensis</i> Island endemic species of western cypress tree

Hesperocyparis guadalupensis, commonly known as Guadalupe cypress, is a species of western cypress from Guadalupe Island in the Pacific Ocean off the western coast of Mexico's Baja Peninsula. It was previously known as Cupressus guadalupensis until 2009. It is a medium sized tree with fine green to blue-green foliage. In its native habitat it depends on water from the fogs that envelop the high northern half of the island. It became an endangered species due to feral goats living on Guadalupe Island that prevented new trees from growing for more than a century. In 2005 the goats were finally removed from its island home as part of an island restoration project. New trees are growing and other plants are beginning to recover though the future of the species is not yet assured. Guadalupe cypress is closely related to the vulnerable Tecate cypress which grows on the mainland in Baja California and southern California. It is used as an ornamental tree in Mediterranean climates, particularly in Europe, but has no significant human uses.

<i>Hesperocyparis lusitanica</i> Central American and Mexican species of western cypress

Hesperocyparis lusitanica, the Mexican cypress or cedar-of-Goa, 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.

<i>Hesperocyparis macnabiana</i> Species of flowering plant in the family

Hesperocyparis macnabiana is a species of western cypress in from California that was previously named Cupressus macnabiana.

<i>Hesperocyparis sargentii</i> Californian species of western cypress tree

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.

<span class="mw-page-title-main">San Ysidro Mountains</span> Mountain range in southern San Diego County, California

The San Ysidro Mountains are a mountain range in southern San Diego County, California and Baja California, Mexico. The mountains are a rugged coastal foothill range of the Peninsular Ranges system. Major peaks include the highest summit of the range, Otay Mountain, and the Cerro San Isidro which forms the southern extrusion of the range on the Mexican side of the border. The majority of the range is within the Otay Mountain Wilderness Area, in the United States.

<span class="mw-page-title-main">Hesperocyparis stephensonii</span> Species of conifer

Cupressus stephensonii is a species of conifer known as the Cuyamaca cypress, and is endemic to Southern California. It has been classified as Hesperocyparis stephensonii. It was previously listed as Cupressus arizonica subsp. stephensonii and Cupressus arizonica var. glabra.

<i>Hesperocyparis nevadensis</i> Californian species of western cypress

Hesperocyparis nevadensis is a species of western cypress tree with the common name Paiute cypress native to a small area in the Sierra Nevada Mountains of California in the western United States. It was formerly known as Cupressus nevadensis.

<i>Hesperocyparis</i> Genus of conifers

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.

<i>Hesperocyparis benthamii</i> Mexican species of western cypress

Hesperocyparis benthamii is a species of western cypress native to Mexico.

<i>Hesperocyparis montana</i> Species of conifer

Hesperocyparis montana, commonly known as the San Pedro Mártir cypress or San Pedro cypress, is a species of conifer. It is a tree native to the Sierra de San Pedro Mártir of Baja California state in northwestern Mexico.

References

  1. NatureServe (2024). "Cupressus forbesii". Arlington, Virginia. Retrieved 23 February 2024.
  2. 1 2 3 "Hesperocyparis forbesii (Jeps.) Bartel". Plants of the World Online . Royal Botanic Gardens, Kew . Retrieved 23 February 2024.
  3. 1 2 3 4 5 Bartel, Jim A. (2012). "Hesperocyparis forbesii, in Jepson Flora Project". Jepson eFlora. The Jepson Herbarium, University of California, Berkeley. Retrieved 24 February 2024.
  4. Little, Damon P. (2006). "Evolution and Circumscription of the True Cypresses (Cupressaceae: Cupressus)". Systematic Botany. 31 (3): 461–480. doi:10.1600/036364406778388638. ISSN   0363-6445. JSTOR   25064176 . Retrieved 17 February 2024.
  5. Adams, Robert P.; Bartel, Jim A.; Price, Robert A. (April 2009). "A New Genus, Hesperocyparis, for the cypresses of the western hemisphere (Cupressaceae)" (PDF). Phytologia. 91 (1): 181. Retrieved 20 February 2024.
  6. "'". World Flora Online . Retrieved 24 February 2024.
  7. "Hesperocyparis forbesii (Jeps.) Bartel". World Flora Online . Retrieved 24 February 2024.
  8. Hesperocyparis forbesii, USDA Natural Resources Conservation Service PLANTS Profile, 24 February 2024
  9. Lee, M. Rare Otay butterfly doesn't make 'endangered' list. San Diego Union-Tribune February 22, 2011.

Further reading