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Taxonomy Of Betula
Subgenera of genus ''Betula'' (birch), are; Subgenus ''Betulenta'' - Wintergreen oil birches Bark on twigs rich in methyl salicylate (oil of wintergreen). Female catkins erect. *''Diploid'' (2''n'' = 28). **''Betula lenta'' - Sweet birch or cherry birch ***''Betula lenta'' subsp. ''uber'' - Cherry Creek birch *''Hexaploid'' (6''n'' = 84). **'' Betula allegheniensis'' - Yellow birch (''B. lutea'') *''Decaploid'' (10''n'' = 140). **'' Betula austrosinensis'' - South China birch **'' Betula globispica'' - **'' Betula insignis'' - **''Betula medwediewii'' - Caucasian birch *''Duodecaploid'' (12''n'' = 168). **'' Betula megrelica'' - *''chromosome number not reported'' **''Betula corylifolia'' - Hazel-leaf birch **''Betula grossa'' - Japanese cherry birch **'' Betula insignis'' - Subgenus ''Betulaster'' - Large-leaf birches Bark on twigs contains some methyl salicylate. Female catkins pendulous. *'' Betula alnoides'' - Alder-leaf birch **''Betula alnoides'' subsp. ''luminifera'' - ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Betula
A birch is a thin-leaved deciduous hardwood tree of the genus ''Betula'' (), in the family Betulaceae, which also includes alders, hazels, and hornbeams. It is closely related to the beech-oak family Fagaceae. The genus ''Betula'' contains 30 to 60 known taxa of which 11 are on the IUCN 2011 Red List of Threatened Species. They are a typically rather short-lived pioneer species widespread in the Northern Hemisphere, particularly in northern areas of temperate climates and in boreal climates. Description Birch species are generally small to medium-sized trees or shrubs, mostly of northern temperate and boreal climates. The simple leaves are alternate, singly or doubly serrate, feather-veined, petiolate and stipulate. They often appear in pairs, but these pairs are really borne on spur-like, two-leaved, lateral branchlets. The fruit is a small samara, although the wings may be obscure in some species. They differ from the alders (''Alnus'', another genus in the family) i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Korea Forest Service
The Korea Forest Service is an independent agency specializing in forestry that is overseen by the South Korean Ministry for Food, Agriculture, Forestry and Fisheries. It is charged with maintaining South Korea's forest lands. The current minister is Kim Jae-Hyun. The headquarters of the agency is located at the Daejeon Government Complex. Overview The Korea Forest Service has the overall responsibility for establishment and implementation of forest policies and laws. The KFS consists of 5 bureaus, 22 divisions, 5 Regional Forest Services, and 27 National Forest Stations. There are KFS-affiliated agencies such as the Forest Aviation Headquarters, the Korea Forest Research Institute, the National Arboretum, and the National Natural Recreation Forest Office. The province and metropolitan cities have their local forestry administrative organizations. The Korea Forest Service is actively involved in the United Nations Convention to Combat Desertification, United Nations Framewor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Betula Leopoldae
''Betula leopoldae'' is an extinct species of birch in the family Betulaceae. The species is known from fossil leaves, catkins, and inflorescences found in the early Eocene deposits of northern Washington state, United States, and similar aged formations in British Columbia, Canada. The species is placed as basal in ''Betula'', either as a stem group species, or an early divergent species. History ''Betula leopoldae'' fossils have been identified from a number of locations in Western North America, the 49 million year old Klondike Mountain Formation near Republic, Washington along with the Allenby Formation near Princeton, the Falkland fossil site near Falkland, and McAbee Fossil Beds both of the Kamloops Groups Tranquille Formation, and the Quilchena fossil site near Quilchena, British Columbia. In general, the geologic ages for the Okanagan Highland locations are of Early Eocene, with the sites that have current uranium-lead or argon–argon radiometric dates indicating ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Betula Schmidtii
''Betula schmidtii'', the iron birch or Schmidt's birch, is a species of flowering plant in the family Betulaceae. It is native to Manchuria, Korea, Primorsky Krai Primorsky Krai (russian: Приморский край, r=Primorsky kray, p=prʲɪˈmorskʲɪj kraj), informally known as Primorye (, ), is a federal subject (a krai) of Russia, located in the Far East region of the country and is a part of the ... of the Russian Far East, and Japan. A tree reaching with nearly black bark, its wood is so dense that it does not float, and is used where a tough, durable material is desired. References schmidtii Flora of Manchuria Flora of Korea Flora of Primorsky Krai Flora of Japan Plants described in 1865 {{Fagales-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Betula Fargesii
A birch is a thin-leaved deciduous In the fields of horticulture and Botany, the term ''deciduous'' () means "falling off at maturity" and "tending to fall off", in reference to trees and shrubs that seasonally shed leaves, usually in the autumn; to the shedding of petals, aft ... hardwood tree of the genus ''Betula'' (), in the family Betulaceae, which also includes alders, hazels, and hornbeams. It is closely related to the beech-oak family Fagaceae. The genus ''Betula'' contains 30 to 60 taxonomy of Betula, known taxa of which 11 are on the IUCN Red List, IUCN 2011 Red List of Threatened Species. They are a typically rather short-lived pioneer species widespread in the Northern Hemisphere, particularly in northern areas of temperate climates and in boreal climates. Description Birch species are generally small to medium-sized trees or shrubs, mostly of northern temperate and boreal climates. The simple leaf, leaves are alternate, singly or doubly serrate, feather-vein ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Betula Chinensis
''Betula chinensis'', commonly known as dwarf small-leaf birch, is a species of birch that can be found in China and Korea on the elevation of . Description The species is tall with either yellow or yellowish-brown colour. Leaf blade is elliptic and ovate with a diameter of by . Female species have a subglobose inflorescence which is also oblong with a diameter of by . It peduncle is long while its bracts can be as long as . Flowers bloom from May to June while the fruits ripe from July to August. Taxonomy ''Betula chinensis'' occurs in both hexaploid Polyploidy is a condition in which the cells of an organism have more than one pair of ( homologous) chromosomes. Most species whose cells have nuclei (eukaryotes) are diploid, meaning they have two sets of chromosomes, where each set contains ... and octoploid forms. It appears to be a triple hybrid between '' B. calcicola'', '' B. potaninii'' and '' B. chichibuensis''. It is placed in section ''Asperae'', subgenus ''As ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Betula Raddeana
''Betula raddeana'' is a species of plant in the Betulaceae family. It is found in Georgia and Russia. It is threatened by habitat loss Habitat destruction (also termed habitat loss and habitat reduction) is the process by which a natural habitat becomes incapable of supporting its native species. The organisms that previously inhabited the site are displaced or dead, thereby .... References raddeana Trees of Russia Flora of Georgia (country) Flora of Russia Taxonomy articles created by Polbot {{Fagales-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Betula Delavayi
A birch is a thin-leaved deciduous hardwood tree of the genus ''Betula'' (), in the family Betulaceae, which also includes alders, hazels, and hornbeams. It is closely related to the beech-oak family Fagaceae. The genus ''Betula'' contains 30 to 60 known taxa of which 11 are on the IUCN 2011 Red List of Threatened Species. They are a typically rather short-lived pioneer species widespread in the Northern Hemisphere, particularly in northern areas of temperate climates and in boreal climates. Description Birch species are generally small to medium-sized trees or shrubs, mostly of northern temperate and boreal climates. The simple leaves are alternate, singly or doubly serrate, feather-veined, petiolate and stipulate. They often appear in pairs, but these pairs are really borne on spur-like, two-leaved, lateral branchlets. The fruit is a small samara, although the wings may be obscure in some species. They differ from the alders (''Alnus'', another genus in the family) in that ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Betula Dahurica
''Betula dahurica'' (lit. ' Daur birch'), Dahurian birch, or Asian black birch (), is a species of birch which is native to China, Japan, Korea, eastern Mongolia, and Russian Far East. It was introduced to the United Kingdom and also grows at the Arnold Arboretum in Boston. In Japan, it usually grows in Nobeyama in Nagano Prefecture in the island of Honshu where it is considered to be endangered. Small population of them can also be found on Hokkaido and Kuril Islands. Description The species is tall with black coloured bark and either reddish-brown or dark brown coloured branches which are also shiny and glabrous. Petiole is with leaf blades being ovate, elliptic, rhombic and . Females have an erect or pendulous inflorescence which have long peduncle. The bracts are long and is lanceolate. The species also have an elliptic and hairless nutlet which have membranous wings. Flowers bloom from June to July while fruit In botany, a fruit is the seed-bearing structure in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Betula Utilis
''Betula utilis'', the Himalayan birch (''bhojpatra'', sa, भूर्ज ''bhūrjá''), is a deciduous tree native to the Western Himalayas, growing at elevations up to . The Latin specific epithet ''utilis'' means "useful", and refers to the many uses of the different parts of the tree. The white, paper-like bark was used in ancient times for writing Sanskrit scriptures and texts. It is still used as paper for the writing of sacred mantras, with the bark placed in an amulet and worn for protection. Selected varieties are used for landscaping throughout the world, even while some areas of its native habitat are being lost due to overuse of the tree for firewood. Taxonomy ''Betula utilis'' was described and named by botanist David Don in his ''Prodromus Florae Nepalensis'' (1825), from specimens collected by Nathaniel Wallich in Nepal in 1820. ''Betula jacquemontii'' ( Spach), first described and named in 1841, was later found to be a variety of ''B. utilis'', and is now ''Bet ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Betula Jacquemontii
''Betula utilis'', the Himalayan birch (''bhojpatra'', sa, भूर्ज ''bhūrjá''), is a deciduous tree native to the Western Himalayas, growing at elevations up to . The Latin specific epithet ''utilis'' means "useful", and refers to the many uses of the different parts of the tree. The white, paper-like bark was used in ancient times for writing Sanskrit scriptures and texts. It is still used as paper for the writing of sacred mantras, with the bark placed in an amulet and worn for protection. Selected varieties are used for landscaping throughout the world, even while some areas of its native habitat are being lost due to overuse of the tree for firewood. Taxonomy ''Betula utilis'' was described and named by botanist David Don in his ''Prodromus Florae Nepalensis'' (1825), from specimens collected by Nathaniel Wallich in Nepal in 1820. ''Betula jacquemontii'' ( Spach), first described and named in 1841, was later found to be a variety of ''B. utilis'', and is now ''Bet ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Betula Ermanii
''Betula ermanii'', or Erman's birch, is a species of birch tree belonging to the family Betulaceae. It is an extremely variable species and can be found in Northeast China, Korea, Japan, and Russian Far East (Kuril Islands, Sakhalin, Kamchatka). It can grow to tall. It is noted for its peeling bark, which can sometimes be removed in sheets, but usually shreds and hangs from the trunk and under branches. Yellow-brown male catkins appear with the leaves in spring. Erman's birch is widely cultivated outside its natural range. The cultivar 'Grayswood Hill' has gained the Royal Horticultural Society's Award of Garden Merit. Leading tree nurseries including Barcham Trees stock the species. It is consequently a frequently encountered street tree in London and other British towns and cities. File:Betula ermanii SE4 02 MG 5041.jpg, Street tree in Brockley Brockley is a district and an electoral ward of south London, England, in the London Borough of Lewisham south-east o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
