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This article is about the oak trees. For places named Live Oak, see Live Oak. Large live oak, called the "Big Tree," found in Goose Island State Park in Rockport, Texas Live oak or evergreen oak is a general term for a number of unrelated oaks in several different sections of the genus Quercus that happen to share the characteristic of evergreen foliage.[1] The name live oak comes from the fact that evergreen oaks remain green and "live" throughout winter, when other oaks are dormant, leafless and "dead"-looking. The name is used mainly in North America, where evergreen oaks are widespread in warmer areas, along the Atlantic coast from southeast Virginia and North Carolina to Florida, west along the Gulf Coast to Texas and Louisiana and across the southwest to California and southwest Oregon. Notable examples of live oaks include the thousands of trees on the campus of Rice University, and also New Orleans City Park, which contains the world's largest collection of mature live oaks. Evergreen oak species are also common in parts of Europe and Asia, and are included in this list for the sake of completeness. These species, although not having "live" in their common names in their countries of origin, are colloquially called live oaks when cultivated in North America. When the term live oak is used in a specific rather than general sense, it most commonly refers to the southern live oak (the first species so named), but can often refer to other species regionally. The southern live oak is the official state tree of Georgia. In Texas, a small grove of live oaks (Texas live oak or southern live oak) is known as a mott.[2] Contents 1 Wood and lumber 2 List of evergreen species in genus Quercus 3 References 4 External links Wood and lumber Live oak was widely used in early American butt shipbuilding. Because of the trees' short height and low hanging branches, lumber from live oak was specifically used to make curved structural members of the hull such as knee braces. In such cuts of lumber, the line of the grain would fall perpendicularly to lines of stress, creating structures of exceptional strength. Live oaks were not generally used for planking because the curved and often convoluted shape of the tree did not lend itself to be milled to planking of any length. Red oak or white oak was generally used for planking on vessels, as those trees tended to grow straight and tall and thus would yield straight trunk sections of length suitable for milling into plank lengths. Live oak was largely logged out in Europe by the latter half of the 19th century, and was similarly sought after and exported from the United States until iron- and steel-hulled commercial vessel construction became the standard early in the 20th century. Live oak lumber is rarely used for furniture due to warping and twisting while drying. It continues to be used occasionally when available in shipbuilding, as well as for tool handles for its strength, energy absorption, and density, but modern composites are often substituted with good effect. Dry southern live oak lumber has a specific gravity of 0.88, among the highest of North American hardwoods. List of evergreen species in genus Quercus Section Quercus. The white oaks - Europe, Asia, North Africa, North America, styles short; acorns mature in 6 months, sweet or slightly bitter, inside of acorn shell is hairless Quercus arizonica - Arizona white oak - southwestern North America Quercus fusiformis - (also Quercus virginiana var. fusiformis) Texas live oak - south central North America Quercus geminata - sand live oak - southeastern North America Quercus ilex - Holm oak - southern Europe Quercus minima - dwarf live oak - southeastern North America Quercus oblongifolia - Mexican blue oak - southwestern North America Quercus polymorpha - Mexican white oak or Monterrey oak - Mexico Quercus pungens - sandpaper oak - south central North America Quercus turbinella - shrub live oak - southwestern North America Quercus virginiana - southern live oak - southeastern North America Section Cerris. Europe, Asia, north Africa. Styles long; acorns mature in 18 months, very bitter, inside of acorn shell is hairless or slightly hairy Quercus calliprinos - Palestine oak - western Asia Quercus coccifera - Kermes oak - southern Europe Quercus semecarpifolia - Himalayan oak - eastern Asia Quercus suber - Cork oak - southwestern Europe Section Protobalanus - Southwest USA, California coastal ranges and northwest Mexico, styles short, acorns mature in 18 months, very bitter, inside of acorn shell is woolly Quercus chrysolepis - canyon live oak - southwestern North America, especially coastal ranges of California Quercus palmeri - Palmer oak - southwestern North America Quercus tomentella - Channel Island oak - Channel Islands of California Quercus vacciniifolia - huckleberry oak - California and southwestern North America Section Lobatae. The red oaks - North, Central and South America, styles long, acorns mature in 18 months, very bitter, inside of acorn shell is woolly Quercus agrifolia - coast live oak - California and southwestern North America Quercus canbyi - Canby oak - Mexico Quercus emoryi - Emory oak - southwestern North America Quercus hemisphaerica - laurel Oak - southeastern North America Quercus humboldtii - South American Oak - northern South America Quercus laurifolia - swamp laurel oak - southeastern U.S. Quercus hypoleucoides - silverleaf oak - southwestern North America Quercus rhysophylla - loquat-leaf oak - Mexico Quercus wislizenii - interior live oak - California and southwestern North America See the list of Quercus species for a fuller listing of oaks, including deciduous species. References ^ Miller, George Oxford (7 April 2006). Landscaping with Native Plants of Texas. Voyageur Press. p. 82. ISBN 9780760325391. http://books.google.com/books?id=3PbQaKSDJfUC&pg=PA82. Retrieved 20 October 2010.  ^ Wheat, Pam; Whorton, Brenda (November 1990). Clues from the Past: A Resource Book on Archeology. Hendrick-Long Pub. Co.. p. 18. ISBN 9780937460658. http://books.google.com/books?id=3ia0x35aOpEC. Retrieved 20 October 2010.  External links Images of remarkable Southern Live Oaks The 1000 Year Old "Big Tree" - Goose Island State Park (Texas) Live Oak in California