Island Oak
A grove of Island Oaks in Santa Rosa Island
Conservation status
Vulnerable (IUCN)
Scientific classification
Kingdom: Plantae Division: Magnoliophyta Class: Magnoliopsida Order: Fagales Family: Fagaceae Genus: Quercus Section: Protobalanus Species: Q. tomentella
Binomial name
Quercus tomentella Engelm.

The Island Oak (Quercus tomentella), also known as Island Live Oak or Channel Islands Oak, is an oak in the section Protobalanus. Island Oak is endemic to six islands off the coast of California, Santa Rosa, Santa Cruz, Anacapa, Santa Catalina, San Clemente, and Guadalupe islands. The first five islands are Channel Islands of California; Guadalupe Island is located to the west of Mexico (Baja California). Image File history File links Metadata Size of this preview: 450 × 600 pixelsFull resolution (1613 × 2150 pixel, file size: 1. ... The conservation status of a species is an indicator of the likelihood of that species continuing to survive either in the present day or the future. ... Image File history File links Status_iucn2. ... This list is incomplete; you can help by expanding it. ... The IUCN Red List of Threatened Species (also known as the IUCN Red List and Red Data List), created in 1963, is the worlds most comprehensive inventory of the global conservation status of plant and animal species and can be found here. ... Scientific classification or biological classification is a method by which biologists group and categorize species of organisms. ... For other uses, see Plant (disambiguation). ... Classes Magnoliopsida - Dicots Liliopsida - Monocots The flowering plants or angiosperms are the most widespread group of land plants. ... Magnoliopsida is the botanical name for a class: this name is formed by replacing the termination -aceae in the name Magnoliaceae by the termination -opsida (Art 16 of the ICBN). ... Families included in the Kew list: Fagaceae - Beech family   (including Nothofagaceae) Betulaceae - Birch family Corylaceae - Hazel family Ticodendraceae not included in the Kew list: Casuarinaceae - She-oak family Juglandaceae - Walnut family Rhoipteleaceae Myricaceae The Fagales are an order of flowering plants, including some of the best known trees. ... Genera Castanea - Chestnuts Castanopsis Chrysolepis - Golden chinkapin Colombobalanus Cyclobalanopsis Fagus - Beeches Formanodendron Lithocarpus - Stone oaks Quercus - Oaks Trigonobalanus The family Fagaceae, or beech family, is characterized by alternate leaves with pinnate venation, flowers in the form of catkins, and fruit in the form of nuts, one to seven in a... This article is about oaks (Quercus desert-oak is unrelated, and instead belongs to the genus Allocasuarina. ... // Genus Quercus Section Quercus The white oaks (synonym sect. ... This article does not cite any references or sources. ... George Engelmann George Engelmann (also known as Georg Engelmann) was a German-American botanist. ... Species See List of Quercus species The term oak can be used as part of the common name of any of several hundred species of trees and shrubs in the genus Quercus (from Latin oak tree), and some related genera, notably Cyclobalanopsis and Lithocarpus. ... // Genus Quercus Section Quercus The white oaks (synonym sect. ... Official language(s) English Capital Sacramento Largest city Los Angeles Largest metro area Greater Los Angeles Area  Ranked 3rd  - Total 158,302 sq mi (410,000 km²)  - Width 250 miles (400 km)  - Length 770 miles (1,240 km)  - % water 4. ... Santa Rosa Island Santa Rosa Island is the second largest of the Channel Islands of California at 52,794 acres (21,365 hectares). ... NASA satellite image of Santa Cruz Island. ... NASA satellite image of Anacapa Island Anacapa Island is a small volcanic island located about 14 miles (23 km) off the coast of Ventura, California, in Ventura County. ... Avalon Bay is a beautiful bay on Catalina Island. ... View from space of Southern California coast, showing Santa Catalina Island (closer to mainland) and San Clemente Island (further from mainland). ... Southeast coast of Guadalupe Island For the French Caribbean island, see Guadeloupe. ... The Channel Islands of California, also called the Santa Barbara Islands, are a chain of eight islands located in the Pacific Ocean off the coast of Southern California along the Santa Barbara Channel in the United States of America. ... Baja California (literally lower California in Spanish) is the northernmost state of Mexico. ...

Island Oak is usually less than 20 meters in height. Its bark is usually gray and becomes furrowed with age. The species is named for the dense hairs found on the undersides of its leaves. Leaves, which are evergreen, are usually 5-8 cm in length, oblong to oblong-obvate in shape, with a toothed margin, deeply indented. Acorns take 2 years to mature and are saucer- to bowl-shaped with a rounded tip, and large in size (cup 20-30 mm wide, 6-8 mm deep, nut 20-35 mm). ‹ The template below (Expand) is being considered for deletion. ... This article is about the seed; for other meanings of the word, especially ACORN community organization, see acorn (disambiguation). ...

Many native populations of Island Oak are in need of immediate restoration due to severe impacts of grazing by non-native herbivores. The National Park Service has classified Island Oak as a species of special environmental concern. A deer and two fawns feeding on some foliage A herbivore is often defined as any organism that eats only plants[1]. By that definition, many fungi, some bacteria, many animals, about 1% of flowering plants and some protists can be considered herbivores. ... The National Park Service (NPS) is the United States federal agency that manages all National Parks, many National Monuments, and other conservation and historical properties with various title designations. ... The Siberian Tiger is a subspecies of tiger that are critically endangered. ...

Fossils of Island Oak have been found in mainland California; the youngest known fossils are two to ten million years old and were found near St. Mary's College, somewhat near the Oakland hills. The oldest known fossils are 30 to 60 million years old and were found in the Mojave desert. Island Oak is no longer native to mainland California, and is thought to be a relict of a climate that was warmer and wetter than today's. However, it will grow readily in mainland California if planted and regularly watered. For other uses, see Fossil (disambiguation). ... For the indigenous American tribe, see Mohave. ...

Island Oak can hybridize with all other members of the section Protobalanus, although its natural range overlaps only with Quercus chrysolepis, the Canyon Live Oak. // This article is about a biological term. ... Binomial name Quercus chrysolepis Liebm. ...

References

• Nixon, K. et al. (1998). Quercus tomentella. 2006 IUCN Red List of Threatened Species. IUCN 2006. Retrieved on 11 May 2006. Listed as Vulnerable (VU B1+2ce v2.3)
• Flora of North America - Quercus tomentella