Juniperus californica

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California juniper
Juniperus californica Mount Diablo.jpg
Specimen (middle ground) in Mount Diablo, California
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Gymnospermae
Division: Pinophyta
Class: Pinopsida
Order: Cupressales
Family: Cupressaceae
Genus: Juniperus
Section: Juniperus sect. Sabina
Species:
J. californica
Binomial name
Juniperus californica
Juniperus californica range map 1.png
Natural range of Juniperus californica
Juniperus californica range map 3.png
Closeup of natural range

Juniperus californica, the California juniper, is a species of juniper native to southwestern North America.

Contents

Description

Juniperus californica is a shrub or small tree reaching 3–8 meters (10–26 feet), but rarely up to 10 m (33 ft) tall. The bark is ashy gray, typically thin, and appears to be "shredded". [4] The shoots[ which? ] are fairly thick compared to most junipers, between 1.5 and 2 millimeters (116 and 332 inch) in diameter.

The foliage is bluish-gray and scale-like. The juvenile leaves (on the seedlings) are needle-like and 5 to 10 mm (316 to 38 in) long. Arranged in opposite decussate pairs or whorls of three, the adult leaves are scale-like, 1 to 5 mm (116 to 316 in) long on lead shoots and 1 to 1.5 mm (132 to 116 in) broad.

The cones are berrylike, 7 to 13 mm (14 to 12 in) in diameter, blue-brown with a whitish waxy bloom, turning reddish-brown, and contain a single seed (rarely two or three). [4] The seeds are mature in about 8 or 9 months. The male cones are 2 to 4 mm (116 to 316 in) long and shed their pollen in early spring. This juniper is largely dioecious, producing cones of only one sex, but around 2% of plants are monoecious, with both sexes on the same plant. [5]

The California juniper is closely related to the Utah juniper ( J. osteosperma ) from further east, which shares the stout shoots and relatively large cones, but differs in that Utah juniper is largely monoecious. Its cones take longer to mature (two growing seasons), and it is also markedly more cold-tolerant.[ citation needed ]

Distribution and habitat

As the name implies, it is mainly in numerous California habitats, although its range also extends through most of Baja California, a short distance into the Great Basin in southern Nevada, and into northwestern Arizona. In California it is found in: the Peninsular Ranges, Transverse Ranges, California Coast Ranges, Sacramento Valley foothills, Sierra Nevada, and at higher elevation sky islands in the Mojave Desert ranges. [6] [7] It is also found off of the North American continental shelf, on Guadalupe Island in the Pacific Ocean, where there are less than 10 individuals. [8] [9]

It grows at moderate altitudes of 750–1,600 m (2,460–5,250 ft). Habitats include: pinyon–juniper woodland with single-leaf pinyon ( Pinus monophylla ); Joshua tree woodland; and foothill woodlands, in the montane chaparral and woodlands and interior chaparral and woodlands sub-ecoregions.[ citation needed ]

Conservation

The species is listed by the International Union for Conservation of Nature as least concern, and not considered globally threatened. However, one of the southernmost populations, formerly on Guadalupe Island off the Baja California Peninsula coast, was almost destroyed by feral goats in the late 19th century, with only a few plants remaining. [10] [8]

Ecology

J. californica provides food and shelter for a variety of native species, such as turkeys, deer, and many others. However, as the species matures, it becomes too tall to provide adequate food and shelter for deer and other ground animals of similar size. [11] is a larval host for the native moth sequoia sphinx ( Sphinx sequoiae ).

Uses

The plant was used as a traditional Native American medicinal plant, and as a food source, by the indigenous peoples of California, including the Cahuilla people, Kumeyaay people (Diegueno), Serrano, and Ohlone people. [12] [13] They gathered the berries to eat fresh and to grind into meal for baking. [4] The wood was also used for sinew-backed bows. [14]

J. californica is cultivated as an ornamental plant, as a dense shrub (and eventual tree) for use in habitat gardens, heat and drought-tolerant gardens, and in natural landscaping design. [4] It is very tolerant of alkali soil, and can provide erosion control on dry slopes. It is also a popular species for bonsai. [15]

Related Research Articles

<span class="mw-page-title-main">Juniper</span> Genus of plants

Junipers are coniferous trees and shrubs in the genus Juniperus of the cypress family Cupressaceae. Depending on the taxonomy, between 50 and 67 species of junipers are widely distributed throughout the Northern Hemisphere, from the Arctic, south to tropical Africa, throughout parts of western, central and southern Asia, east to eastern Tibet in the Old World, and in the mountains of Central America. The highest-known juniper forest occurs at an altitude of 4,900 metres (16,100 ft) in southeastern Tibet and the northern Himalayas, creating one of the highest tree lines on earth.

<i>Juniperus communis</i> Species of conifer in the cypress family Cupressaceae

Juniperus communis, the common juniper, is a species of small tree or shrub in the cypress family Cupressaceae. An evergreen conifer, it has the largest geographical range of any woody plant, with a circumpolar distribution throughout the cool temperate Northern Hemisphere.

<i>Juniperus virginiana</i> Species of conifer in the cypress family Cupressaceae

Juniperus virginiana, also known as eastern redcedar, red cedar, Virginian juniper, eastern juniper, red juniper, and other local names, is a species of juniper native to eastern North America from southeastern Canada to the Gulf of Mexico and east of the Great Plains. Further west it is replaced by the related Juniperus scopulorum and to the southwest by Juniperus ashei. It is not to be confused with Thuja occidentalis.

<i>Juniperus oxycedrus</i> Species of plant

Juniperus oxycedrus, vernacularly called Cade, cade juniper, prickly juniper, prickly cedar, or sharp cedar, is a species of juniper, native across the Mediterranean region, growing on a variety of rocky sites from sea level. The specific epithet oxycedrus means "sharp cedar" and this species may have been the original cedar or cedrus of the ancient Greeks.

<i>Juniperus osteosperma</i> Species of plant

Juniperus osteosperma is a shrub or small tree native to the southwestern United States.

<i>Juniperus occidentalis</i> Species of tree in North America

Juniperus occidentalis, known as the western juniper, is a shrub or tree native to the Western United States, growing in mountains at altitudes of 800–3,000 meters (2,600–9,800 ft) and rarely down to 100 m (330 ft). It is listed as Least Concern on the IUCN Red List because it is a widespread species with an increasing population.

<i>Juniperus scopulorum</i> Species of conifer

Juniperus scopulorum, the Rocky Mountain juniper, is a species of juniper native to western North America, from southwest Canada to the Great Plains of the United States.

<i>Juniperus horizontalis</i> Species of conifer

Juniperus horizontalis, the creeping juniper or creeping cedar, is a low-growing shrubby juniper native to northern North America, throughout most of Canada from Yukon east to Newfoundland, and in some of the northern United States.

<i>Juniperus recurva</i> Species of juniper

Juniperus recurva, commonly named the Himalayan juniper or drooping juniper, is a juniper native to the Himalaya, from northern Pakistan, through India, Nepal and Bhutan, to western Yunnan in southwestern China. It grows at altitudes of 3,000–4,000 metres.

<i>Frangula californica</i> Species of tree

Frangula californica is a species of flowering plant in the buckthorn family native to western North America. It produces edible fruits and seeds. It is commonly known as California coffeeberry and California buckthorn.

<i>Artemisia californica</i> Species of plant

Artemisia californica, also known as California sagebrush, is a species of western North American shrub in the sunflower family.

<i>Eriogonum fasciculatum</i> Species of flowering shrub

Eriogonum fasciculatum is a species of wild buckwheat known by the common names California buckwheat and flat-topped buckwheat. Characterized by small, white and pink flower clusters that give off a cottony effect, this species grows variably from a patchy mat to a wide shrub, with the flowers turning a rusty color after blooming. This plant is of great benefit across its various habitats, providing an important food resource for a diversity of insect and mammal species. It also provides numerous ecosystem services for humans, including erosion control, post-fire mitigation, increases in crop yields when planted in hedgerows, and high habitat restoration value.

<i>Juniperus deppeana</i> Species of conifer

Juniperus deppeana is a small to medium-sized tree reaching 10–15 metres in height. It is native to central and northern Mexico and the southwestern United States.

<i>Lonicera subspicata</i> Species of honeysuckle

Lonicera subspicata is a species of honeysuckle known by the common name southern honeysuckle. It is native to Baja California, California, and northern Baja California Sur, where it is known from several areas in mountain and coastal habitat, particularly chaparral. It is a vining shrub which usually climbs on other plants for support.

<i>Celtis reticulata</i> Species of tree

Celtis reticulata, with common names including netleaf hackberry, western hackberry, Douglas hackberry, netleaf sugar hackberry, palo blanco, and acibuche, is a small- to medium-sized deciduous tree native to western North America.

<span class="mw-page-title-main">Pinyon–juniper woodland</span> Biome of Western United States higher elevation deserts

Pinyon–juniper woodland, also spelled piñon–juniper woodland, is a biome found mid-elevations in arid regions of the Western United States, characterized by being an open forest dominated by low, bushy, evergreen junipers, pinyon pines, and their associates. At lower elevations, junipers often predominate and trees are spaced widely, bordering on and mingling with grassland or shrubland, but as elevation increases, pinyon pines become common and trees grow closer, forming denser canopies. Historically, pinyon-juniper woodland has provided a vital source of fuel and food for peoples of the American Southwest.

<i>Juniperus grandis</i> Species of conifer

Juniperus grandis, known as Sierra juniper, Sierra western juniper, and western juniper, is a tree or tall shrub that is endemic to the Western United States. It is sometimes considered a variety or subspecies of Juniperus occidentalis, which is also known as western juniper.

<i>Ambrosia salsola</i> Species of flowering plant

Ambrosia salsola, commonly called cheesebush, winged ragweed, burrobush, white burrobrush, and desert pearl, is a species of perennial shrub in the family Asteraceae native to deserts of the southwestern United States and northwestern Mexico.

<i>Cylindropuntia bernardina</i> Species of cholla cactus

Cylindropuntia bernardina is a species of cholla cactus commonly known as the cane cholla or valley cholla, native to California and northwestern Baja California. It is an erect cholla that grows up to 2–3 meters tall, and occurs primarily in the foothills of the Transverse and Peninsular Ranges, parts of the Sonoran Desert, and in the Coast Ranges with a few populations around the Cuyama River. It was formerly placed as the variety parkeri of Cylindropuntia californica until it was renamed to C. bernardina. It is more closely related to Cylindropuntia ganderi than to C. californica.

References

  1. Farjon, A. (2013). "Juniperus californica". IUCN Red List of Threatened Species . 2013: e.T42226A2962888. doi: 10.2305/IUCN.UK.2013-1.RLTS.T42226A2962888.en . Retrieved 12 November 2021.
  2. "Juniperus californica Carrière". Plants of the World Online. The Trustees of the Royal Botanic Gardens, Kew. n.d. Retrieved November 13, 2022.
  3. "Juniperus californica Carrière". Catalogue of Life. Species 2000. n.d. Retrieved November 13, 2022.
  4. 1 2 3 4 "Lady Bird Johnson Wildflower Center – The University of Texas at Austin". www.wildflower.org.
  5. Charters, Michael L. (2007): Wildflowers and Other Plants of Southern California: Juniperus californica. Retrieved October 16, 2007.
  6. "Juniperus californica". in Jepson Flora Project (eds.) Jepson eFlora. Jepson Herbarium; University of California, Berkeley. 2018. Retrieved 2018-07-06.
  7. Sullivan, Steven. K. (2018). "Juniperus californica". Wildflower Search. Retrieved 2018-07-06.
  8. 1 2 Luna-Mendoza, Luciana; Aguirre-Muñoz, Alfonso; Hernández-Montoya, J.C.; Torres-Aguilar, Marisol; García-Carreón, Jacinto; Hernandez, Orlando; Luvianos-Colin, Sergio; Cárdenas, Ana; Méndez Sánchez, Federico (2019). "Ten years after feral goat eradication: the active restoration of plant communities on Guadalupe Island, Mexico". Occasional Paper SSC. 62: 571–575.
  9. Rebman, J. P.; Gibson, J.; Rich, K. (2016). "Annotated checklist of the vascular plants of Baja California, Mexico" (PDF). San Diego Society of Natural History. 45: 23.
  10. León de la Luz, José Luis; Rebman, Jon P. & Oberbauer, Thomas (2003): On the urgency of conservation on Guadalupe Island, Mexico: is it a lost paradise? Biodiversity and Conservation12(5): 1073–1082. doi : 10.1023/A:1022854211166 (HTML abstract)
  11. "Juniperus californica". www.fs.fed.us. Retrieved 2020-11-14.
  12. "BRIT – Native American Ethnobotany Database". naeb.brit.org.
  13. Sutton, Mark Q.; Earle, David D. (2017). The Desert Serrano of the Mojave River (PDF). Pacific Coast Archaeological Society Quarterly. p. 8.
  14. "Juniper – California Juniper". mojavedesert.net. Retrieved 2020-11-14.
  15. "Juniperus californica, California Juniper". www.laspilitas.com.

Further reading