|
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 typically short-lived pioneer species and are widespread in the Northern Hemisphere, particularly in northern areas of temperate climates and in boreal climates. Birch wood is used for a wide range of purposes. 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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Korea Forest Service
The Korea Forest Service (KFS; ) is a central administrative agency under the Ministry of Agriculture, Food and Rural Affairs (MAFR), responsible for protecting and nurturing forests, increasing forest resources, developing forest products, conducting research on forest management and improvement, and is located in Daejeon Government Complex. In the past, during the national forestation campaign from 1973 to 1986, it was temporarily under the Ministry of Home Affairs (now the Ministry of the Interior and Safety), but returned to the Ministry of Agriculture, Forestry and Fisheries in 1987. However, as the agency's work was focused solely on maintaining and managing successful national forestation policies, questions were raised about its necessity for a period of time. Currently, the agency has transformed its identity into one that strives to generate continuous income through forest resources. It is one of the government agencies that is highly likely to expand in the event of ... [...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 indicati ... [...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, informally known as Primorye, is a federal subjects of Russia, federal subject (a krais of Russia, krai) of Russia, part of the Far Eastern Federal District in the Russian Far East. The types of inhabited localities in Russia, ... 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 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 typically short-lived pioneer species and are widespread in the Northern Hemisphere, particularly in northern areas of temperate climates and in boreal climates. Birch wood is used for a wide range of purposes. 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 ... [...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 two paired sets of ( homologous) chromosomes. Most species whose cells have nuclei (eukaryotes) are diploid, meaning they have two complete sets of chromosomes, one fro ... 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 or habitat reduction) occurs when a natural habitat is no longer able to support its native species. The organisms once living there have either moved elsewhere, or are dead, leading to a decrease .... References raddeana Trees of Russia Flora of Georgia (country) Flora of Russia Trees of Europe 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 typically short-lived pioneer species and are widespread in the Northern Hemisphere, particularly in northern areas of temperate climates and in boreal climates. Birch wood is used for a wide range of purposes. 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 ... [...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 f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Betula Utilis
''Betula utilis'', the Himalayan birch (''bhojpatra'', ''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 as a writing surface for manuscripts of Sanskrit literature. It is still used as paper for the writing of 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'' (Édouard Spach, Spach), first described and named in 1841, was later found to be a variety of ''B. utilis'', and is now ' ... [...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 (biology), 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.http://apps.rhs.org.uk/plantselector/plant?plantid=243 File:Betula ermanii SE4 02 MG 5041.jpg, Street tree in Brockley, south east London References Further reading * Ohwi, J. ''Flora of Japan'', 1984. * ''Woody Plants of Japan'', Vol. 1, 2000. Betula, ermanii Plants described in 1831 Trees of China Trees of Japan Trees of Kore ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
