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White Oak
''Quercus'' subgenus ''Quercus'' is one of the two subgenera into which the genus ''Quercus'' was divided in a 2017 classification (the other being subgenus ''Cerris''). It contains about 190 species divided among five sections. It may be called the New World clade or the high-latitude clade; most species are native to the Americas, the others being found in Eurasia and northernmost North Africa. Description Members of subgenus ''Quercus'' are distinguished from members of subgenus ''Cerris'' by few morphological features, their separation being largely determined by molecular phylogenetic evidence. All are trees or shrubs bearing acorn-like fruit in which a cup covers at least the base of the nut. The outer structure of the mature pollen is one feature that distinguishes the two subgenera: in subgenus ''Quercus'', the small folds or wrinkles (rugulae) are obscured by sporopollenin, whereas in subgenus ''Cerris'', the rugulae are visible or at most weakly obscured. The two sub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quercus Robur
''Quercus robur'', the pedunculate oak, is a species of flowering plant in the beech and oak family, Fagaceae. It is a large tree, native plant, native to most of Europe and western Asia, and is widely cultivated in other temperate regions. It grows on soils of near neutral Soil pH, acidity in the lowlands and is notable for its value to natural ecosystems, supporting a very wide diversity of herbivorous insects and other pests, predators and pathogens. Description Pedunculate oak is a deciduous tree up to tall, with a single stout trunk that can be as much as in girth (circumference at breast height) or even 14 m in Pollarding, pollarded specimens. Older trees tend to be pollarded, with boles (the main trunk) about 3 m long. They often live longer and become more stout than unpollarded trees. The crown is spreading and unevenly domed, and trees often have massive lower branches. The bark is greyish-brown and closely grooved, with vertical plates. There are often large burrs ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
World Geographical Scheme For Recording Plant Distributions
The World Geographical Scheme for Recording Plant Distributions (WGSRPD) is a biogeographical system developed by the international Biodiversity Information Standards (TDWG) organization, formerly the International Working Group on Taxonomic Databases. The WGSRPD standards, like other standards for data fields in botanical databases, were developed to promote "the wider and more effective dissemination of information about the world's heritage of biological organisms for the benefit of the world at large". The system provides clear definitions and codes for recording plant distributions at four scales or levels, from "botanical continents" down to parts of large countries. The codes may be referred to as TDWG geographical codes. Current users of the system include the International Union for Conservation of Nature (IUCN), the Germplasm Resources Information Network (GRIN), and Plants of the World Online (POWO). Principles of organization The scheme is one of a number develop ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quercus Chrysolepis
''Quercus chrysolepis'', commonly termed canyon live oak, canyon oak, golden cup oak or maul oak, is a North American species of evergreen oak. Its leaves are a glossy dark green on the upper surface with prominent spines; a further identification arises from the leaves of canyon live oak being geometrically flat. The species is found in Mexico and in the western United States, notably in the California Coast Ranges. It is often found near creeks and drainage swales growing in moist cool microhabitats. Description ''Quercus chrysolepis'' is an evergreen tree with significant-sized spreading, horizontal branches, and a broad, rounded crown; it attains a height of 6–30 meters (20–100 feet) and often forms as a shrub. The trunk diameter typically ranges from . Exceptionally large specimens are found in the mountains of Southern California, and rank among the largest oaks in North America. The largest known in the San Bernardino Mountains measures high, with a trunk circ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quercus Cedrosensis
''Quercus cedrosensis'', the Cedros Island oak, is a species of plant in the family Fagaceae. It is placed in ''Quercus'' section ''Protobalanus''. ''Quercus cedrosensis'' is native to Baja California state in northwestern Mexico, including Cedros Island. It has also been found in San Diego County, California. ''Quercus cedrosensis'' is vulnerable to habitat loss due to overgrazing by goats and overlogging Overlogging is a form of overexploitation caused by legal or illegal logging activities that lead to unsustainable or irrecoverable deforestation and permanent habitat destruction for forest wildlife. Causes The use of poor logging practices .... References cedrosensis Flora of California Cedros Island Natural history of the California chaparral and woodlands Natural history of San Diego County, California Trees of Northern America Plants described in 1962 Taxonomy articles created by Polbot Oaks of Mexico {{Quercus-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aimée Antoinette Camus
Aimée Antoinette Camus (1 May 1879 – 17 April 1965) was a French botanist. She was best known for her study of orchids and oaks. Camus also has the legacy of authoring the second highest number of land plant species among female scientists, in total naming 677 species. Biography Camus was the daughter of Edmond Gustave Camus, also a botanist, and was born in L'Isle-Adam, about 50 kilometres north of Paris. Under her father's influence, she specialized in the study of orchids and the anatomy of the plant and worked for some time with other professionals such as Paul Bergon (1863-1912) and Paul Henri Lecomte (1856-1934). She was especially close to her sister, the painter Blanche-Augustine Camus (1881-1968). Collaboration with the Paris Natural History Museum From 1922, Camus voluntarily collaborated for more than 30 years as a free worker for the Paris Natural History Museum and her numerous publications are part of the Museum's collections. According to the com ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Otto Karl Anton Schwarz
Otto is a masculine German given name and a surname. It originates as an Old High German short form (variants '' Audo'', '' Odo'', '' Udo'') of Germanic names beginning in ''aud-'', an element meaning "wealth, prosperity". The name is recorded from the 7th century ( Odo, son of Uro, courtier of Sigebert III). It was the name of three 10th-century German kings, the first of whom was Otto I the Great, the first Holy Roman Emperor, founder of the Ottonian dynasty. The Gothic form of the prefix was ''auda-'' (as in e.g. '' Audaþius''), the Anglo-Saxon form was ''ead-'' (as in e.g. '' Eadmund''), and the Old Norse form was '' auð-''. Due to Otto von Bismarck, the given name ''Otto'' was strongly associated with the German Empire in the later 19th century. It was comparatively frequently given in the United States (presumably in German American families) during the 1880s to 1890s, remaining in the top 100 most popular masculine given names in the US throughout 1880–1898, but i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
William Trelease
William Trelease (February 22, 1857 – January 1, 1945) was an American botanist, entomologist, explorer, writer and educator. This botanist is denoted by the author abbreviation Trel. when citing a botanical name. Trelease was born in Mount Vernon, New York. He graduated B.S. from Cornell University in 1880 and a D.Sc from Harvard in 1884. He was instructor in botany at Harvard University 1880–81, instructor in botany at the University of Wisconsin–Madison 1881–83, and professor of botany there from 1883 to 1885. He was also special lecturer in botany at Johns Hopkins University, and in charge of the summer school of botany at Harvard, during 1883–84. He was Engelmann professor of botany at Washington University in St. Louis from 1885 to 1913, and appointed director of the Missouri Botanical Garden from 1889 to 1912. He was active in various municipal and professional academic associations: he was the first President of the Botanical Society of America in 1894, a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quercus Rubra
''Quercus rubra'', the northern red oak, is an oak tree in the red oak group (''Quercus'' section ''Lobatae''). It is a native of North America, in the eastern and central United States and southeast and south-central Canada. It has been introduced to small areas in Western Europe, where it can frequently be seen cultivated in gardens and parks. It prefers good soil that is slightly acidic. Often simply called red oak, northern red oak is so named to distinguish it from southern red oak (''Q. falcata''), also known as the Spanish oak. Northern red oak is sometimes called champion oak. Description In many forests, ''Quercus rubra'' grows straight and tall, to , exceptionally to tall, with a trunk of up to in diameter. Open-grown trees do not get as tall, but can develop a stouter trunk, up to in diameter. It has stout branches growing at right angles to the stem, forming a narrow round-topped head. Under optimal conditions and full sun, northern red oak is fast growing ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quercus Myrtifolia
''Quercus myrtifolia'', the myrtle oak, is a North American species of oak. It is native to the southeastern United States (Mississippi, Alabama, Florida, Georgia, South Carolina). It is often found in coastal areas on sandy soils. It is an evergreen tree that can reach tall, also appearing as a shrub in drier sites. It has leaves with no teeth or lobes, which are hairless on the upperside and also on the underside except along the veins. Taxonomy This plant was first identified by Carl Ludwig von Willdenow. Some synonyms for ''Quercus myrtifolia'' are ''Quercus nitida'', ''Quercus aquatica'' var. ''myrtifolia'', ''Quercus myrtifolia'' f. ''ampla'', ''Quercus phellos'' var. ''arenaria'', and ''Quercus phellos'' var. ''myrtifolia''. The common name is the Myrtle Oak Description The Myrtle Oak often grows as a shrub, but can also take the form of a tree. In maturity it grows to tall and wide. It is considered a red oak. The leaves are simple alternate. They appear dark g ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quercus Ellipsoidalis
''Quercus ellipsoidalis'', the northern pin oak or Hill's oak, is a North American species of oak tree native to the north-central United States and south-central Canada, primarily in the Great Lakes region and the Upper Mississippi Valley. It most commonly occurs on dry, sandy soils. Description ''Quercus ellipsoidalis'' is a medium-sized deciduous tree growing to tall with an open, rounded crown. The leaves are glossy green, long and broad, lobed, with five or seven lobes, and deep sinuses between the lobes. Each lobe has 3–7 bristle-tipped teeth. The leaf is nearly hairless, except for small tufts of pale orange-brown down where the lobe veins join the central vein. The acorns tend to be ellipsoid (ellipse-shaped, from which its scientific name derives), though they tend to be highly variable and range to globose, long and broad, a third to a half covered in a deep cup, green maturing pale brown about 18 months after pollination; the kernel is very bitter. The inner s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quercus Coccinea
''Quercus coccinea'', the scarlet oak, is a deciduous tree in the red oak section ''Lobatae'' of the genus ''Quercus'', in the family Fagaceae. It is primarily distributed in the central and eastern United States. It occurs on dry, sandy, usually acidic soil. It is often an important canopy species in oak–heath forests. The scarlet oak is the official tree of Washington, D.C. Description ''Quercus coccinea'' is a medium to large deciduous tree growing to around with an open, rounded crown; the maximum height is approximately . The trunk diameter at breast height is typically It is a medium-size tree that grows fast and matures relatively early. It sets a deep growing taproot. The leaves are glossy green, long and broad, with seven lobes, and deep sinuses between the lobes. Each lobe has 3–7 bristle-tipped teeth. The leaf is hairless (unlike the related pin oak (''Q. palustris''), with tufts of pale orange-brown down where the lobe veins join the central vein). Th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quercus Castanea
''Quercus castanea'' is a species of oak tree. It is widespread across much of Mexico, from Sonora to Chiapas, and in Central America. Description It is a deciduous tree up to tall with a trunk as much as in diameter. The leaves are thick and leathery, up to long, and elliptical with numerous pointed teeth along the edges.Romero Rangel, S., E. C. Rojas Zenteno & M. L. Aguilar Enríquez. 2002. El género ''Quercus'' (Fagaceae) en el estado de México. Annals of the Missouri Botanical Garden 89(4): 551–593 in Spanish, with line drawings of each species It flowers from March to June, and its |
