|
Ulmus Americana 'Great Plains'
The American Elm cultivar ''Ulmus americana'' 'Great Plains' was a clone raised by nurseryman Wedge of the Oscar H. Will & Co. Nurseries, Bismarck, North Dakota, in the 1930s and first listed in the company's 1942 catalogue as 'Great Plains American Elm'. The cultivar did not appear in Green's 1964 or Santamour's 1995 cultivar lists. Description Said to be "an unusually handsome form of American elm". A photograph of a narrow-habited wild elm captioned 'N. D. Native American elm' that had first appeared in Will's catalogues in the 1930s, and a second of the same specimen, with figure, alongside the 'Great Plains' information, presumably shows the parent tree. North Dakota is at the western edge of the natural range of ''Ulmus americana''. Pests and diseases No specific information. Dutch elm disease was first detected in North Dakota in 1969 and had spread to most of the state by 1975. Cultivation The clone was propagated by grafting and recommended for boulevard planti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ulmus Americana
''Ulmus americana'', generally known as the American elm or, less commonly, as the white elm or water elm, is a species of elm native to eastern North America, naturally occurring from Nova Scotia west to Alberta and Montana, and south to Florida and central Texas. The American elm is an extremely hardy tree that can withstand winter temperatures as low as −42 ° C (−44 ° F). Trees in areas unaffected by Dutch elm disease (DED) can live for several hundred years. A prime example of the species was the Sauble Elm, which grew beside the banks of the Sauble River in Ontario, Canada, to a height of 43 m (140 ft), with a d.b.h of 196 cm (6.43 ft) before succumbing to DED; when it was felled in 1968, a tree-ring count established that it had germinated in 1701. For over 80 years, ''U. americana'' had been identified as a tetraploid, i.e. having double the usual number of chromosomes, making it unique within the genus. However, a study published in 2011 by t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
American Elm
''Ulmus americana'', generally known as the American elm or, less commonly, as the white elm or water elm, is a species of elm native to eastern North America, naturally occurring from Nova Scotia west to Alberta and Montana, and south to Florida and central Texas. The American elm is an extremely hardy tree that can withstand winter temperatures as low as −42 ° C (−44 ° F). Trees in areas unaffected by Dutch elm disease (DED) can live for several hundred years. A prime example of the species was the Sauble Elm, which grew beside the banks of the Sauble River in Ontario, Canada, to a height of 43 m (140 ft), with a d.b.h of 196 cm (6.43 ft) before succumbing to DED; when it was felled in 1968, a tree-ring count established that it had germinated in 1701. For over 80 years, ''U. americana'' had been identified as a tetraploid, i.e. having double the usual number of chromosomes, making it unique within the genus. However, a study published in 2011 by t ... [...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] |
Bismarck, North Dakota
Bismarck () is the capital of the U.S. state of North Dakota and the county seat of Burleigh County. It is the state's second-most populous city, after Fargo. The city's population was 73,622 in the 2020 census, while its metropolitan population was 133,626. In 2020, ''Forbes'' magazine ranked Bismarck as the seventh fastest-growing small city in the United States. Bismarck was founded by European-Americans in 1872 on the east bank of the Missouri River. It has been North Dakota's capital city since 1889 when the state was created from the Dakota Territory and admitted to the Union. Bismarck is across the river from Mandan, named after a historic Native American tribe of the area. The two cities make up the core of the Bismarck–Mandan Metropolitan Statistical Area. The North Dakota State Capitol is in central Bismarck. The state government employs more than 4,600 in the city. As a hub of retail and health care, Bismarck is the economic center of south-central North Dakot ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Peter Shaw Green
Peter Shaw Green (11 September 1920–17 August 2009) was an English botanist. Early life Green was born in Rochester, Kent, the youngest son of John and Elizabeth (née Hainsworth) Green, his father a civilian engineer with the Royal Air Force. He was educated at Taunton School, before studying botany at King's College London. His studies were interrupted by the Second World War, in which he served as an Adjutant (Captain) in the Northumberland Fusiliers, initially training recruits to shoot, but later joining his regiment in Italy, where he contracted typhoid. Upon recovery, he was despatched to Greece. In 1946, while still in uniform, he married Winifred Brown, whom he had met at King's College before the war. After demobilization, he returned to his studies at King's College. Career After graduation, Green was appointed Assistant Lecturer at Birmingham University before joining the Royal Botanic Garden, Edinburgh in 1952. In 1961, he moved to the Arnold Arboretum of Harvar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arnold Arboretum
The Arnold Arboretum of Harvard University is a botanical research institution and free public park, located in the Jamaica Plain and Roslindale neighborhoods of Boston, Massachusetts. Established in 1872, it is the oldest public arboretum in North America. The landscape was designed by Charles Sprague Sargent and Frederick Law Olmsted and is the second largest "link" in the Emerald Necklace. The Arnold Arboretum's collection of temperate trees, shrubs, and vines has a particular emphasis on the plants of the eastern United States and eastern Asia, where arboretum staff and colleagues are actively sourcing new material on plant collecting expeditions. The arboretum supports research in its landscape and in its Weld Hill Research Building. History The Arboretum was founded in 1872 when the President and Fellows of Harvard College became trustees of a portion of the estate of James Arnold (1781–1868), a whaling merchant from New Bedford, Massachusetts. Arnold specified that ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Harvard University
Harvard University is a private Ivy League research university in Cambridge, Massachusetts. Founded in 1636 as Harvard College and named for its first benefactor, the Puritan clergyman John Harvard, it is the oldest institution of higher learning in the United States and one of the most prestigious and highly ranked universities in the world. The university is composed of ten academic faculties plus Harvard Radcliffe Institute. The Faculty of Arts and Sciences offers study in a wide range of undergraduate and graduate academic disciplines, and other faculties offer only graduate degrees, including professional degrees. Harvard has three main campuses: the Cambridge campus centered on Harvard Yard; an adjoining campus immediately across Charles River in the Allston neighborhood of Boston; and the medical campus in Boston's Longwood Medical Area. Harvard's endowment is valued at $50.9 billion, making it the wealthiest academic institution in the world. Endowment inco ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dutch Elm Disease
Dutch elm disease (DED) is caused by a member of the sac fungi (Ascomycota) affecting elm trees, and is spread by elm bark beetles. Although believed to be originally native to Asia, the disease was accidentally introduced into Americas, America, Europe, and New Zealand. In these regions it has devastated native populations of elms that did not have resistance to the disease. The name "Dutch elm disease" refers to its identification in 1921 and later in the Netherlands by Dutch phytopathologists Marie Beatrice Schol-Schwarz, Bea Schwarz and Christine Buisman, who both worked with professor Johanna Westerdijk. The disease affects species in the genera ''Ulmus'' and ''Zelkova''; therefore it is not specific to the Ulmus × hollandica, Dutch elm hybrid. Overview Dutch elm disease (DED) is caused by ascomycete microfungi. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mandan
The Mandan are a Native American tribe of the Great Plains who have lived for centuries primarily in what is now North Dakota. They are enrolled in the Three Affiliated Tribes of the Fort Berthold Reservation. About half of the Mandan still reside in the area of the reservation; the rest reside around the United States and in Canada. The Mandan historically lived along both banks of the Upper Missouri River and two of its tributaries—the Heart and Knife rivers— in present-day North and South Dakota. Speakers of Mandan, a Siouan language, they developed a settled, agrarian culture. They established permanent villages featuring large, round, earth lodges, some in diameter, surrounding a central plaza. Matrilineal families lived in the lodges. The Mandan were a great trading nation, trading especially their large corn surpluses with other tribes in exchange for bison meat and fat. Food was the primary item, but they also traded for horses, guns, and other trade goods. Popula ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Great Plains
The Great Plains (french: Grandes Plaines), sometimes simply "the Plains", is a broad expanse of flatland in North America. It is located west of the Mississippi River and east of the Rocky Mountains, much of it covered in prairie, steppe, and grassland. It is the southern and main part of the Interior Plains, which also include the tallgrass prairie between the Great Lakes and Appalachian Plateau, and the Taiga Plains and Boreal Plains ecozones in Northern Canada. The term Western Plains is used to describe the ecoregion of the Great Plains, or alternatively the western portion of the Great Plains. The Great Plains lies across both Central United States and Western Canada, encompassing: * The entirety of the U.S. states of Kansas, Nebraska, North Dakota and South Dakota; * Parts of the U.S. states of Colorado, Iowa, Minnesota, Missouri, Montana, New Mexico, Oklahoma, Texas and Wyoming; * The southern portions of the Canadian provinces of Alberta, Saskatchewan and Manitoba. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ulmus Americana 'Sheyenne'
The American Elm cultivar ''Ulmus americana'' 'Sheyenne' was raised by the Northwest Nursery Company of Valley City, North Dakota, before 1941, from a local elm in nearby Chautauqua Park. 'Sheyenne' is not regarded as a valid cultivar by some authorities. Description Northwest Nursery described 'Sheyenne' as "an unusually fast growing, upright tree of great beauty" with "a fine spreading head and large dark green leaves". It reportedly made as large a tree in 10 years as the average American elm in 15. The Plumfield Nursery later called it "somewhat vase-shaped". Cultivation 'Sheyenne' was propagated by grafting. Northwest Nursery considered it "an ideal tree for street and lawn planting". It was also marketed from 1957 by the Plumfield Nursery, Fremont, Nebraska,Moffet, L. ''Plumfield Nursery Spring 1957 Wholesale Trade List''. Plumfield Nursery, Fremont, Nebraska. which ceased trading circa 1980. It is unlikely the tree remains in cultivation in North America or beyond. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
.jpg "Click for more on -> Cultivar")
.jpg "Click for more on -> Mandan")
.jpg "Click for more on -> Great Plains")