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Ulmus Gaussenii
''Ulmus gaussenii'' W. C. Cheng, the Anhui, or hairy, elm, is a medium size deciduous tree whose natural range is restricted to the valleys of the Langya limestone mountains of Chu XianGeographical Names: Chu Xian, Anhui, satellite photograph. National Geospatial-Intelligence Agency, Bethesda, MD, US/ref> in Anhui Province, eastern China.Fu, L. and Xin, Y. 'Elms of China' in Dunn, C. P. (ed.) (2000). ''The Elms - Breeding, Conservation, and Disease Management.'', Part 1, Taxonomy, 21-44. Springer Science + Business Media, New York. The tree was most commonly found on the flood plains, indicating a tolerance of periodic inundation. However, ''U. gaussenii'' is now possibly the rarest and most endangered elm species, with only approximately 30 trees known to survive in the wild in 2009.Grimshaw, J. & Bayton, R. (2009). ''New Trees - Recent Introductions to Cultivation''. RBG Kew, London. The tree was introduced to the West in 1995, at the Morton Arboretum, Illinois, as par ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wan Chun Cheng
Wan Chun Cheng or Zheng Wanjun (, 1908–1987) was a Chinese botanist. Initially one of the Chinese plant collectors who followed in the wake of the Europeans after 1920, he became one of the world's leading authorities on the taxonomy of gymnosperms. Working at the National Central University in Nanjing, he was instrumental in the identification in 1944 of the dawn redwood, ''Metasequoia glyptostroboides ''Metasequoia glyptostroboides'', the dawn redwood, is a fast-growing, endangered deciduous pinophyta, conifer. It is the sole living species of the genus ''Metasequoia'', one of three genera in the subfamily Sequoioideae of the family (botany), ...'' previously known only from fossils. The plant '' Juniperus chengii'' is named in his honour. References 1908 births 1987 deaths 20th-century Chinese botanists Biologists from Jiangsu Botanists with author abbreviations Members of the Chinese Academy of Sciences Scientists from Xuzhou National Central University ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
LT50
LT50 is the median Lethal Time (time until death) after exposure of an organism to a toxic substance or stressful condition. LT50 is commonly used in toxicology studies to quantify amount of a stressor necessary to kill an organism. LT50 can be used in conjunction with EC50 (median Exposure Concentration) for even more precise quantification. See also * Acute toxicity * Viability assay A viability assay is an assay that is created to determine the ability of organs, cells or tissues to maintain or recover a state of survival. Viability can be distinguished from the all-or-nothing states of life and death by the use of a quanti ... References Toxicology {{biology-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Funtley
Funtley – from the Anglo-Saxon, "Funtaleg", "spring field (clearing)", is a hamlet or exurb north of Fareham, Hampshire, England. It forms a projection towards the South Downs National Park and is generally included within Fareham's population as it is within its built-up area. At present the village is unparished, although the creation of a parish council has been discussed. The village grew from the development of a clay quarry, the clay used to make chimney pots and bricks — acclaimed Fareham red (bricks) used to build premium Victorian buildings such as the Royal Albert Hall in London, and Knowle Hospital near Fareham. Sometimes known as Fontley by locals (reflecting its probable longstanding alternate pronunciation, as it appears in church use and many other place names such as Mottisfont) the village is no longer a discrete settlement owing to post-World War II growth of Fareham, it is an exurb in rural surrounds separated from the town by the M27 motorway. Its ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lincolnshire
Lincolnshire (abbreviated Lincs.) is a county in the East Midlands of England, with a long coastline on the North Sea to the east. It borders Norfolk to the south-east, Cambridgeshire to the south, Rutland to the south-west, Leicestershire and Nottinghamshire to the west, South Yorkshire to the north-west, and the East Riding of Yorkshire to the north. It also borders Northamptonshire in the south for just , England's shortest county boundary. The county town is Lincoln, where the county council is also based. The ceremonial county of Lincolnshire consists of the non-metropolitan county of Lincolnshire and the area covered by the unitary authorities of North Lincolnshire and North East Lincolnshire. Part of the ceremonial county is in the Yorkshire and the Humber region of England, and most is in the East Midlands region. The county is the second-largest of the English ceremonial counties and one that is predominantly agricultural in land use. The county is fourth-larg ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Grange Farm Arboretum
The Grange Farm Arboretum is a small private arboretum comprising 3 hectares accommodating over 800 trees, mostly native and ornamental species or cultivars, notably oaks, ashes, walnuts and elms, growing on a calcareous loam.Ostler, J. (2009) ''40 special trees of Lincolnshire'' p. 73. Lincolnshire Tree Awareness Group, Lincoln, UK. The arboretum is located in the village of Sutton St James, Lincolnshire Lincolnshire (abbreviated Lincs.) is a county in the East Midlands of England, with a long coastline on the North Sea to the east. It borders Norfolk to the south-east, Cambridgeshire to the south, Rutland to the south-west, Leicestershire ..., England, and was founded by Matthew Ellis in 1987. The arboretum is open to visitors by appointment. References Arboreta in England {{arboretum-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Washington, D
Washington commonly refers to: * Washington (state), United States * Washington, D.C., the capital of the United States ** A metonym for the federal government of the United States ** Washington metropolitan area, the metropolitan area centered on Washington, D.C. * George Washington (1732–1799), the first president of the United States Washington may also refer to: Places England * Washington, Tyne and Wear, a town in the City of Sunderland metropolitan borough ** Washington Old Hall, ancestral home of the family of George Washington * Washington, West Sussex, a village and civil parish Greenland * Cape Washington, Greenland * Washington Land Philippines *New Washington, Aklan, a municipality *Washington, a barangay in Catarman, Northern Samar *Washington, a barangay in Escalante, Negros Occidental *Washington, a barangay in San Jacinto, Masbate *Washington, a barangay in Surigao City United States * Washington, Wisconsin (other) * Fort Washington (other) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States National Arboretum
The United States National Arboretum is an arboretum in northeast Washington, D.C., operated by the United States Department of Agriculture's Agricultural Research Service. It was established in 1927 by an act of Congress after a campaign by USDA Chief Botanist Frederick Vernon Coville. It is in size and is located northeast of the Capitol building, with entrances on New York Avenue, NE and R Street, NE. The campus's gardens, collections, and features are connected by roadways that are long in total. In addition to the main campus in Washington, D.C., there are research locations at the Henry A. Wallace Beltsville Agricultural Research Center in Beltsville, Maryland and in McMinville, Tennessee. The Arboretum functions as a major center of botanical research conducted by the USDA, including applied research on trees, shrubs, turf, and the development of new ornamental plants. In addition to a library and a historical collection (archive), the institution also has an extensive ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Denver Botanic Gardens
The Denver Botanic Gardens is a public botanical garden located in the Cheesman Park neighborhood of Denver, Colorado. The park contains a conservatory, a variety of theme gardens and a sunken amphitheater, which hosts various concerts in the summer. Location There are three diverse locations that are part of the Denver Botanic Gardens as a whole. The main location, and the formal garden, is the York Street location in east-central Denver. Denver Botanic Gardens at Chatfield (near Chatfield State Park) features natural meadow and riparian areas, as well as a historic farm and homestead. Mt. Goliath, on the route to Mount Evans, is an alpine wildflower garden (along hiking trails). The Denver Botanic Gardens, along with nearby Cheesman Park and Congress Park, sit atop what used to be Prospect Hill cemetery. Although the majority of bodies were removed in 1893, the interred continued to be removed as late as the 1950s. As recently as 2010, graves were uncovered during reno ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chicago Botanic Garden
The Chicago Botanic Garden is a living plant museum situated on nine islands in the Cook County Forest Preserves. It features 27 display gardens in four natural habitats: McDonald Woods, Dixon Prairie, Skokie River Corridor, and Lakes and Shores. The garden is open every day of the year. An admission fee has been approved to start in 2022, not to exceed $35. The Chicago Botanic Garden is owned by the Forest Preserve District of Cook County, and managed by the Chicago Horticultural Society. It opened to the public in 1972, and is home to the Joseph Regenstein Jr. School of the Chicago Botanic Garden, offering a number of classes and certificate programs. The Chicago Botanic Garden is accredited by the American Alliance of Museums and is a member of the American Public Gardens Association (APGA). Garden facts The Chicago Botanic Garden has 50,000 members, the largest membership of any U.S. public garden, and is Chicago's 7th largest cultural institution and 12th-ranking tourist ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brenton Arboretum
The Brenton Arboretum is a 141-acre arboretum and public garden in Dallas Center, Iowa, United States, established in 1997. The arboretum displays 175 native Iowa trees and shrubs suitable to the site, as well as many other tree species which can grow in central Iowa. The non-profit arboretum is open to the public from 9 am to sunset on Tuesday through Sunday, featuring a collection of over 2,600 trees and shrubs on display. The arboretum was founded by Sue and J.C. (Buz) Brenton and their children, on land which was part of the original Home Farm acquired by Dr. James Brenton and his son, William Henry, soon after they arrived from Indiana in 1853 by covered wagon. Its first trees were planted in 1997. The master plan was created by Anthony Tyznik of Batavia, Illinois, who for many years was the landscape architect for the Morton Arboretum in Chicago, Illinois. The arboretum has a lake, pond, wetlands, several streams, walking paths, bridges, prairies, wildflowers and a smal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Henri Gaussen
Marcel-Henri Gaussen (14 July 1891 in Cabrières-d'Aigues (Vaucluse) - 27 July 1981 in Toulouse), was a French botanist and biogeographer. In 1926, he defended his thesis on "the vegetation of the eastern half of the Pyrenees", which laid the foundation for future work on the border between biogeography and vegetation mapping. Gaussen was an early advocate of the ideas of stages and vegetation succession, which are fundamental to phytogeography. His work allowed for the production of a vegetation map of France at a scale of 1/200 000 (completed after his death by the service of the CNRS, but which he had created and directed) and many similar projects in other countries. His work led to many advanced phytogeographic tools such as the xerothermic or Gaussen Index, and the "". As recognition for his scientific work in mapping of vegetation cover and ecology, he received the Grand Prix of the Geographical Society for geographical research and publications in 1971. He was also ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cultivar
A cultivar is a type of cultivated plant that people have selected for desired traits and when propagated retain those traits. Methods used to propagate cultivars include: division, root and stem cuttings, offsets, grafting, tissue culture, or carefully controlled seed production. Most cultivars arise from purposeful human manipulation, but some originate from wild plants that have distinctive characteristics. Cultivar names are chosen according to rules of the International Code of Nomenclature for Cultivated Plants (ICNCP), and not all cultivated plants qualify as cultivars. Horticulturists generally believe the word ''cultivar''''Cultivar'' () has two meanings, as explained in ''Formal definition'': it is a classification category and a taxonomic unit within the category. When referring to a taxon, the word does not apply to an individual plant but to all plants that share the unique characteristics that define the cultivar. was coined as a term meaning "cultivated variety ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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