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List Of Quercus Species
The genus ''Quercus'' contains about 500 known species, plus about 180 hybrids between them. The genus, as is the case with many large genera, is divided into subgenera and sections. Traditionally, the genus ''Quercus'' was divided into the two subgenera ''Cyclobalanopsis'', the ring-cupped oaks, and ''Quercus'', which included all the other sections. However, a comprehensive revision in 2017 identified different relationships. Now the genus is commonly divided into a subgenus ''Quercus'' and a subgenus ''Cerris'', with ''Cyclobalanopsis'' included in the latter. The sections of subgenus ''Quercus'' are mostly native to the New World, with the notable exception of the white oaks of sect. ''Quercus'' and the endemic '' Quercus pontica''. In contrast, the sections of the subgenus ''Cerris'' are exclusively native to the Old World. Unless otherwise indicated, the lists which follow contain all the species accepted by Plants of the World Online , plus selected hybrids that are also ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of The Largest Genera Of Flowering Plants
There are over 56 genus, genera of flowering plants estimated to contain at least 500 species description, described species. The largest of these is currently the Fabaceae, legume genus ''Astragalus (plant), Astragalus'' (milk-vetches), with over 3,000 species. The sizes of plant genera vary widely from monotypic genus, those containing a single species to genera containing thousands of species, and this disparity became clear early in the history of plant classification. The largest genus in Carl Linnaeus' seminal ''Species Plantarum'' was ''Euphorbia'', with 56 species; Linnaeus believed that no genus should contain more than 100 species. Part of the disparity in genus sizes is attributable to historical factors. According to a hypothesis published by Max Walters in 1961, the size of plant genera is related to the age, not of the taxon itself, but of the concept of the taxon in the minds of taxonomists. Plants which grew in Europe, where most of the early taxonomy was based, w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quercus Alba
''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. Although called a white oak, it is very unusual to find an individual specimen with white bark; the usual colour is a light gray. The name comes from the colour of the finished wood. In the forest it can reach a magnificent height and in the open it develops into a massive broad-topped tree with large branches striking out at wide angles. Description ''Quercus alba'' typically reaches heights of at maturity, and its canopy can become quite massive as its lower branches are apt to extend far out laterally, parallel to the ground. Trees growing in a forest will become much taller than ones in an open area which develop to be short and mass ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quercus Berberidifolia
''Quercus berberidifolia'', the California scrub oak, is a small evergreen or semi-evergreen shrubby oak in the white oak section of ''Quercus''. It is native to California and common in chaparral. Description ''Quercus berberidifolia'' grows to tall, rarely to . In cooler, more exposed areas, scrub oak is usually a small, compact shrub, but in warm or sheltered areas the plant can spread out and grow several metres high. It has oval to egg-shaped, sharply toothed, dull green leaves which are long and broad, leathery on their top surfaces and somewhat hairy underneath. Male and female catkins grow on the same plant, blooming as at the leaves unfurl. The solitary or paired brown acorns are long and broad, and pointed or egg-shaped with thin caps when mature; they mature in about 6–8 months after pollination. Similar species The species is often known simply as scrub oak, a name also applied to other ''Quercus'' species, especially several which were formerly ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quercus × Bebbiana
''Quercus'' × ''bebbiana'' (or ''Quercus bebbiana''), known as Bebb's oak, is a naturally occurring hybrid of white oak (''Quercus alba'') and burr oak ('' Quercus macrocarpa''). It occurs where their ranges overlap in the eastern United States and eastern Canada. It was named for Michael Schuck Bebb (1833–1895), an Illinois botanist who specialized in willows (''Salix Willows, also called sallows and osiers, of the genus ''Salix'', comprise around 350 species (plus numerous hybrids) of typically deciduous trees and shrubs, found primarily on moist soils in cold and temperate regions. Most species are known ...''). Its parents are both placed in ''Quercus'' sect. ''Quercus''. A tree reaching , and available from specialty nurseries, its acorns are sweet enough to be palatable to humans. References {{DEFAULTSORT:Quercus x bebbiana bebbiana Flora of Northern America Plants described in 1904 Plant nothospecies ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Durango
Durango, officially the Free and Sovereign State of Durango, is one of the 31 states which make up the Political divisions of Mexico, 32 Federal Entities of Mexico, situated in the northwest portion of the country. With a population of 1,832,650, the 8th lowest of Mexico's states, Durango has Mexico's second-lowest population density, after Baja California Sur. The capital city, Durango, Durango, Victoria de Durango, is named after the first President of Mexico, Guadalupe Victoria. Geography General information The area of Durango is ; this accounts for about 6.3% of the entire territory of Mexico. It is the fourth largest state, lying at the extreme northwest of the Mexican Plateau, Central Mexican Plateau, where it meets the Sierra Madre Occidental—the highest peaks in the state. The state has an average elevation of 1,775 meters above sea level, with a mean elevation of 1,750 m in the Valleys region and 2,450 m in the Sierra region. The Durango City, city of Durango is on t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chihuahua (state)
Chihuahua, officially the Free and Sovereign State of Chihuahua, is one of the 31 states which, along with Mexico City, comprise the Political divisions of Mexico, 32 federal entities of Mexico. It is located in the northwestern part of Mexico and is bordered by the states of Sonora to the west, Sinaloa to the southwest, Durango to the south, and Coahuila to the east. To the north and northeast, it shares an extensive U.S.–Mexico border, border with the U.S. adjacent to the U.S. states of New Mexico and Texas. The state was named after its capital city, Chihuahua City; the largest city is Ciudad Juárez. In 1864 the city of Chihuahua was declared capital of Mexico by Benito Juárez, Benito Juarez during the Reform War and French intervention. The city of Parral, Chihuahua, Parral was the largest producer of silver in the world in 1640. During the Mexican War of Independence, Miguel Hidalgo y Costilla, Miguel Hidalgo was executed on July 30, 1811, in Chihuahua city. Although C ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quercus × Basaseachicensis
''Quercus'' × ''basaseachicensis'' is a species of oak tree in the Fagaceae (beech) family. It is thought to be a hybrid of '' Quercus depressipes'' and '' Quercus rugosa''. It is native to the states of Chihuahua and Durango in Mexico Mexico, officially the United Mexican States, is a country in North America. It is the northernmost country in Latin America, and borders the United States to the north, and Guatemala and Belize to the southeast; while having maritime boundar ..., in which there are five known populations (all of which are believed to be small). Both parents are placed in section ''Quercus''. References basaseachicensis Endemic oaks of Mexico Trees of Northern America Endangered biota of Mexico Endangered flora of North America Taxonomy articles created by Polbot Flora of the Sierra Madre Occidental {{Quercus-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quercus Austrina
''Quercus austrina'', the bastard white oak or bluff oak, is an oak species that is endemic to the southeastern United States from Mississippi to the Carolinas, with a few isolated populations in Arkansas. ''Quercus austrina'' can grow to a height of 45 to 60 feet (13.5–18 meters) with a spread of 35 to 50 feet (10.5–15 m). Leaves are narrow, with shallow rounded lobes. It tends to grow in wet habitats, such as on river bluffs, river bottoms, and flatwoods, and generally over basic substrates, such as mafic rocks, shells, or calcareous sediment. ''Quercus austrina'' specimens have often been misidentified as either '' Q. sinuata'' or ''Q. nigra.'' Quercus austrina is tolerant to clay, sand, loam, acidic, and well-drained soils. Also, it requires a lot of sun and its drought tolerance is high. National champion The largest known bluff oak in the United States appeared on the National Register of Champion Trees in 2015. Located in Wakulla, Florida, the national champion spe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quercus Arizonica
''Quercus arizonica'', the Arizona white oak, is a North American tree species in the beech family. It is found in Arizona, New Mexico, western Texas, Sonora, Chihuahua, Coahuila, Sinaloa, and Durango. Description The Arizona white oak is one of the largest southwestern oaks. This tree may grow to , with a trunk diameter of . It has stout branches and a spreading crown. The leaves are about long, thick, and evergreen. It grows very slowly once it has become mature, adding approximately of diameter per year. * Bark: color is light grayish. The bark is initially thin and lenticelled, but later becomes quite thick, with shallow fissures and scaly ridges. * Twig: medium-sized, fuzzy. The color can be light brown or reddish brown. Twigs have pointy and fat clusters of terminal buds. * Leaves: alternate, evergreen, simple, and oblong. The color is yellowish green or bluish green. Leaves are usually 1 to 3 in long. The margins are usually entire or toothed, and are rounded a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sierra Madre Oriental
The Sierra Madre Oriental () is a mountain range in northeastern Mexico. The Sierra Madre Oriental is part of the American Cordillera, a chain of mountain ranges (cordillera) that consists of an almost continuous sequence of mountain ranges that form the western "backbone" of North America, Central America, South America, and Antarctica. Setting Spanning the Sierra Madre Oriental runs from the Rio Grande on the border between Coahuila and Texas south through Nuevo León, southwest Tamaulipas, San Luis Potosí, Querétaro, and Hidalgo to northern Puebla, where it joins with the east-west running Eje Volcánico Transversal of central Mexico. The northernmost are the Sierra del Burro and the Sierra del Carmen which reach the border with the United States at the Rio Grande. North of the Rio Grande, the range continues northwestward into Texas and beyond as the Davis and Guadalupe Ranges. Mexico's Gulf Coastal Plain lies to the east of the range, between the mountains and the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quercus Ariifolia
''Quercus ariifolia'' is a species of oak native to the Sierra Madre Oriental of Mexico. Description ''Quercus ariifolia'' belongs to the ''Quercus rugosa'' group of species. The species of this group are characterized by obovate, occasionally broadly obovate or oblanceolate, leaves, with a strongly rugose upper surface and with clustered trichomes on the lower surface.Valencia Avalos, Susana (2010). "Notes on the Genus ''Quercus'' in Mexico". ''International Oak Journal'' No. 21 Spring 2010 Range and habitat ''Quercus ariifolia'' is native to the southern Sierra Madre Oriental, where it is found in the states of Puebla, Hidalgo, Querétaro, and San Luis Potosí San Luis Potosí, officially the Free and Sovereign State of San Luis Potosí, is one of the 32 states which compose the Federal Entities of Mexico. It is divided in 59 municipalities and is named after its capital city, San Luis Potosí. It .... It inhabits seasonally dry forests. References {{Taxonbar, from=Q ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quercus Alpescens
''Quercus alpescens'' is a species of oak endemic to northeastern Mexico.''Quercus alpescens'' Trel. '''', Kew Science. Accessed 24 March 2023. Description ''Quercus alpescens'' is a large shrub, which grows from one to three meters tall.Range and habitat ''Quercus alpescens'' is known from a few locations in the and isolated ranges on the |
