Hesperocyparis macnabiana

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Hesperocyparis macnabiana
Cupressus macnabiana.JPG
Hesperocyparis macnabiana foliage
Status TNC G4.svg
Apparently Secure  (NatureServe) [2]
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. macnabiana
Binomial name
Hesperocyparis macnabiana
(A.Murray bis) Bartel
Cupressus macnabiana range map 2.png
Natural range
Cupressus macnabiana range map 4.png
(Red circles indicate extinct populations.)
Synonyms [3]
List
    • Cupressus glandulosa Hook. ex Gordon & Glend.
    • Callitropsis macnabiana (A.Murray bis) D.P.Little
    • Cupressus macnabiana A.Murray bis
    • Neocupressus macnabiana (A.Murray bis) de Laub.
    • Cupressus nabiana Mast.
    • Juniperus macnabiana P.Lawson ex Gordon & Glend.

Hesperocyparis macnabiana (MacNab cypress or Shasta cypress) is a species of western cypress in from California that was previously named Cupressus macnabiana. [4]

Contents

Distribution

Hesperocyparis macnabiana is endemic to northern California. Hesperocyparis macnabiana is one of the most widely distributed of all the native California cypresses, found growing in chaparral, oak woodlands, and coniferous woodlands habitats along the inner northern California Coast Ranges and the foothills of the northern Sierra Nevada. MacNab cypress is often associated with ultramafic soils. [5]

note prominent "horns" (umbos) on top two cone bracts Cupressus macnabiana cones.JPG
note prominent "horns" (umbos) on top two cone bracts

Description

Hesperocyparis macnabiana is an evergreen shrub or small tree, 3–12 metres (9.8–39.4 ft) (rarely to 17 metres (56 ft)) tall, with a spreading crown that is often broader than it is tall. The foliage is produced in dense, short flat sprays (unlike most other California cypresses, which do not have flattened sprays), bright glaucous gray-green, with a strong spicy-resinous scent. The leaves are scale-like, 1–2 mm long with an acute apex, and a conspicuous white resin gland on the center of the leaf. Young seedlings produce needle-like leaves up to 10 mm (0.4 inches) long in their first year. [6]

The seed cones are oblong-ovoid to cuboid, 15–25 mm long and 13–20 mm broad, with six (rarely four or eight) scales, each scale bearing a prominent umbo; they are strongly serotinous, not opening to release the seeds until the parent tree is killed by wildfire. This enables heavy seed release to colonize the bare, fire-cleared ground. The pollen cones are 3–4 mm long, and release their pollen in the fall. [6]

Taxonomy

Hesperocyparis macnabiana was given its first scientific description in 1855 by the naturalist Andrew Murray under the name Cupressus macnabiana. [3] It was named after William Ramsay McNab of the Royal Botanic Garden Edinburgh the suggestion of Murray's brother, William Murray. [7] As part of spiting the new world cypress species into the new genus Hesperocyparis it was moved out of Cupressus by Jim A. Bartel in 2009. [3] This split has not been universally accepted, [8] but as of 2024 Plants of the World Online (POWO) and World Flora Online (WFO) both list the new classification as accepted. [3] [9]

See also

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>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.

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

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.

<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 abramsiana</i> Californian species of western cypress

The Santa Cruz cypress is a species of North American tree within the cypress family. The species is endemic to the Santa Cruz Mountains within the Santa Cruz and San Mateo counties of west-central California. The U.S. Fish and Wildlife Service listed the species on the Endangered Species Act in 1987 due to increasing threats from habitat loss and disruption of natural forest fire regimes. In 2016, the conservation status of the Santa Cruz cypress changed to Threatened. The cited reasoning was a decrease in threats against their habitat.

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

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.

<i>Cupressus funebris</i> Species of conifer

Cupressus funebris, the Chinese weeping cypress, is a species of cypress native to southwestern and central China. It may also occur naturally in Vietnam.

<i>Cupressus cashmeriana</i> Species of conifer

Cupressus cashmeriana, the Bhutan cypress or Kashmir cypress, is a species of evergreen conifer native to the eastern Himalaya in Bhutan and adjacent areas of Arunachal Pradesh in northeastern India. [ Now in vulnerable category, IUCN list retrieved in 2006 ]. It is also introduced in China and Nepal. It grows at moderately high altitudes of 1,250–2,800 metres (4,100–9,190 ft).

<i>Callitris columellaris</i> Species of conifer

Callitris columellaris is a species of coniferous tree in the family Cupressaceae, native to most of Australia. Common names include white cypress, white cypress-pine, Murray River cypress-pine, and northern cypress-pine. Callitris columellaris has become naturalised in Hawaii and in southern Florida.

<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.

<i>Hesperocyparis forbesii</i> Western North American species of western cypress

Hesperocyparis forbesii, with the common names Tecate cypress or Forbes' cypress, 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.

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

Hesperocyparis stephensonii is a species of western cypress known as the Cuyamaca cypress that is found only in two very small areas in Southern California and northwestern Baja California.

<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 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. Farjon, A. (2013). "Cupressus macnabiana". IUCN Red List of Threatened Species . 2013: e.T42222A2962703. doi: 10.2305/IUCN.UK.2013-1.RLTS.T42222A2962703.en . Retrieved 12 November 2021.
  2. NatureServe (2024). "Cupressus macnabiana". Arlington, Virginia. Retrieved 7 February 2024.
  3. 1 2 3 4 "Hesperocyparis macnabiana (A.Murray bis) Bartel". Plants of the World Online . Royal Botanic Gardens, Kew . Retrieved 7 February 2024.
  4. A. Farjon. 2005. A Monograph of Cupressaceae and Sciadopityaceae. Royal Botanic Gardens, Kew. ISBN   1-84246-068-4.
  5. C. Michael Hogan. 2010. Leather Oak, Quercus durata. Encyclopedia of Earth. National Council for Science and Environment. Washington DC
  6. 1 2 Flora of North America: Cupressus macnabiana
  7. Murry, Andrew (January 1855). "Description of New Coniferous Trees from California". The Edinburgh New Philosophical Journal. 1. Open Court Publishing Co: 293–294. Retrieved 7 February 2024.
  8. Mаеrki, Didier (31 January 2017). "Editorial: Recent developments in the taxonomy of the genus Cupressus and consequences for their conservation" (PDF). Bulletin of the Cupressus Conservation Project. 6 (1): 3–24. Retrieved 7 February 2024.
  9. "Hesperocyparis macnabiana (A.Murray bis) Bartel". World Flora Online . Retrieved 7 February 2024.