An oak is a tree or shrub in the genus Quercus of the beech family, Fagaceae. There are approximately 500 extant species of oaks. The common name "oak" also appears in the names of species in related genera, notably Lithocarpus, as well as in those of unrelated species such as Grevillea robusta and the Casuarinaceae (she-oaks). The genus Quercus is native to the Northern Hemisphere, and includes deciduous and evergreen species extending from cool temperate to tropical latitudes in the Americas, Asia, Europe, and North Africa. North America has the largest number of oak species, with approximately 160 species in Mexico of which 109 are endemic and about 90 in the United States. The second greatest area of oak diversity is China, with approximately 100 species.
Quercus alba, the white oak, is one of the preeminent hardwoods of eastern and central North America. It is a long-lived oak, native to eastern and central North America and found from Minnesota, Ontario, Quebec, and southern Maine south as far as northern Florida and eastern Texas. Specimens have been documented to be over 450 years old.
Quercus robur, commonly known as common oak, pedunculate oak, European oak or English oak, is a species of flowering plant in the beech and oak family, Fagaceae. It is a large tree, native to most of Europe west of the Caucasus. It is widely cultivated in temperate regions elsewhere and has escaped into the wild in scattered parts of China and North America.
Quercus petraea, commonly known as the sessile oak, Cornish oak, Irish Oak or durmast oak, is a species of oak tree native to most of Europe and into Anatolia and Iran. The sessile oak is the national tree of Ireland, and an unofficial emblem in Wales and Cornwall.
Philip Ballantyne Kerr was a British author, best known for his Bernie Gunther series of historical detective thrillers.
Quercus coccifera, the kermes oak, is an oak bush in the Ilex section of the genus. It is native to the Mediterranean region and Northern African Maghreb, south to north from Morocco to France and west to east from Portugal to Cyprus and Turkey, crossing Spain, Italy, Libya, Balkans, and Greece, including Crete. The Kermes Oak was historically important as the food plant of the Kermes scale insect, from which a red dye called crimson was obtained. The etymology of the specific name coccifera is related to the production of red cochineal (crimson) dye and derived from Latin coccum which was from Greek κόκκος, the kermes insect. The Latin -fera means 'bearer'.
Lachesilla is the main genus in the psocopteran family Lachesillidae. There are at least 310 described species in Lachesilla. Frequent species in the Northern hemisphere include Lachesilla quercus and Lachesilla pedicularia. Some species are localized: Lachesilla merzi has been collected only once in Spain and Lachesilla rossica, apart from the original specimens that were found in southern Russia, is only known from the Valley of the Allondon river, near Geneva, Switzerland.
Lachesilla rossica is a rare psocopteran species described from southern Russia. The species can be found in Ukraine as well. It has been found recently in the valley of the Allondon river, near Geneva, Switzerland. In the latter habitat, it is found together with Lachesilla bernardi, a congeneric species that is visually very similar to it: the examination of genitalia with a microscope is the only way to differentiate the two species.
Lachesilla pedicularia is a brown coloured species of Psocoptera from the Lachesillidae family that can be found in Europe.
Lachesilla tectorum is a species of Psocoptera from the Lachesillidae family that is endemic to the Canary Islands.
Lachesilla tanaidana is a species of Psocoptera from the Lachesillidae family that can be found in Germany, Hungary, Portugal, Sardinia, Switzerland, and Ukraine.
Lachesilla sauteri is a species of Psocoptera from the Lachesillidae family that is endemic to Switzerland.
Lachesilla bernardi is a species of Psocoptera from the Lachesillidae family that can be found in Austria, Croatia, Cyprus, France, Greece, Hungary, Italy, Poland, Portugal, Romania, Spain, and Switzerland. It can also be found in Near East.
Lachesilla dimorpha is a species of Psocoptera from the Lachesillidae family that can be found in Cyprus, Greece, Italy, and Spain. It can also be found in Near East and North Africa.
Lachesilla greeni is a species of Psocoptera from the Lachesillidae family that can be found in Austria, Azores, Belgium, France, Germany, Italy, Poland, Portugal, Romania, Spain, and Switzerland. It can also be found in Near East.
Lachesilla meinanderi is a species of Psocoptera from the Lachesillidae family that is endemic to the Canary Islands. The habitat of Lachesilla meinanderi is terrestrial.
Lachesilla merzi is a species of Psocoptera from the Lachesillidae family that is endemic to Spain.
Lachesilla pacifica is a species of Psocoptera from the Lachesillidae family that can be found in France and Switzerland.
Lachesilla floridana is a species of fateful barklouse in the family Lachesillidae. It is found in North America.
