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Ulmus Minor 'Webbiana'
The Field Elm cultivar ''Ulmus minor'' 'Webbiana', or Webb's curly-leaf elm, distinguished by its unusual leaves that fold upwards longitudinally, was said to have been raised at Lee's Nursery, Hammersmith, London, circa 1868, and was first described in that year in ''The Gardener's Chronicle'' and ''The Florist and Pomologist''. It was marketed by the Späth nursery of Berlin in the late 19th and early 20th centuries as ''U. campestris Webbiana'' Hort., and by Louis van Houtte of Ghent as ''U. campestris crispa (Webbiana)''.''Cultures de Louis van Houtte: Plantes Vivaces de Pleine Terre'' ''Catalogue de Louis van Houtte, 1881-2'', p.303 |
Ulmus Minor
''Ulmus minor'' Mill., the field elm, is by far the most polymorphic of the European species, although its taxonomy remains a matter of contention. Its natural range is predominantly south European, extending to Asia Minor and Iran; its northern outposts are the Baltic islands of Öland and Gotland, although it may have been introduced by humans. The tree's typical habitat is low-lying forest along the main rivers, growing in association with oak and ash, where it tolerates summer floods as well as droughts.Heybroek, H. M., Goudzwaard, L, Kaljee, H. (2009). ''Iep of olm, karakterboom van de Lage Landen'' (:Elm, a tree with character of the Low Countries). KNNV, Uitgeverij. Current treatment of the species owes much to Richens, who noted (1983) that several varieties of field elm are distinguishable on the European mainland. Of these, he listed the small-leaved ''U. minor'' of France and Spain; the narrow-leaved ''U. minor'' of northern and central Italy; the densely hairy lea ... [...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 tha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ottawa
Ottawa (, ; Canadian French: ) is the capital city of Canada. It is located at the confluence of the Ottawa River and the Rideau River in the southern portion of the province of Ontario. Ottawa borders Gatineau, Quebec, and forms the core of the Ottawa–Gatineau census metropolitan area (CMA) and the National Capital Region (NCR). Ottawa had a city population of 1,017,449 and a metropolitan population of 1,488,307, making it the fourth-largest city and fourth-largest metropolitan area in Canada. Ottawa is the political centre of Canada and headquarters to the federal government. The city houses numerous foreign embassies, key buildings, organizations, and institutions of Canada's government, including the Parliament of Canada, the Supreme Court, the residence of Canada's viceroy, and Office of the Prime Minister. Founded in 1826 as Bytown, and incorporated as Ottawa in 1855, its original boundaries were expanded through numerous annexations and were ultimately ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dominion Arboretum
The Dominion Arboretum (french: Arboretum du Dominion) is an arboretum part of the Central Experimental Farm of Agriculture and Agri-Food Canada in Ottawa, Ontario, Canada. Originally begun in 1889, the Arboretum covers about of rolling land between Prince of Wales Drive, Dow's Lake and the Rideau Canal. Carleton University is located at the opposite side of the Canal. At a latitude of 45°, it can experience extremely hot and humid summers and extremely cold winters. It displays a wide range of well-established trees and shrubs with the intention of evaluating their hardiness, including 1,700 different species and varieties. The arboretum is open from dawn to dusk and the admission is free. Although the climate of the Ottawa area is Zone 5a, the topography of the Arboretum produces a microclimate and is warmer by one zone. This has allowed for a collection of magnolias, azaleas, and several other fringe trees including Metasequoia and Liriodendron. One of the favouri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kew Gardens
Kew Gardens is a botanical garden, botanic garden in southwest London that houses the "largest and most diverse botany, botanical and mycology, mycological collections in the world". Founded in 1840, from the exotic garden at Kew Park, its living collections include some of the 27,000 taxa curated by Royal Botanic Gardens, Kew, while the herbarium, one of the largest in the world, has over preserved plant and fungal specimens. The library contains more than 750,000 volumes, and the illustrations collection contains more than 175,000 prints and drawings of plants. It is one of London's top tourist attractions and is a World Heritage Sites, World Heritage Site. Kew Gardens, together with the botanic gardens at Wakehurst Place, Wakehurst in Sussex, are managed by the Royal Botanic Gardens, Kew, an internationally important botany, botanical research and education institution that employs over 1,100 staff and is a non-departmental public body sponsored by the Department for Envir ... [...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 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 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 Dutch elm hybrid. Overview Dutch elm disease (DED) is caused by ascomycete microfungi.Ascomycetes: Phylum Ascomycota< ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Philip Barker Webb
Philip Barker Webb (10 July 1793 – 31 August 1854) was an English botanist. Life Webb was born to a wealthy, aristocratic family; his father was the lord of the manors of Witley and Milford, in Surrey, England. Webb was educated at Harrow School and Christ Church, Oxford. He collected plants in Italy, Spain, and Portugal, and was the first person to collect in the Tetuan Mountains of Morocco. En route to Brazil he made what was intended to be a brief visit to the Canary Islands, but he stayed for a considerable time, returning after his Brazil expedition. The results can be seen in the nine-volume '' Histoire Naturelle des Iles Canaries'' (''Natural History of the Canary Islands''), which he co-authored with Sabin Berthelot. In company with Berthelot, who had lived on the islands for some time, Webb collected specimens on the islands between 1828 and 1830. The text of ''Histoire Naturelle des Iles Canaries'' took 20 years to complete. Specialists such as Pierre-Just ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Samara (fruit)
A samara (, ) is a winged achene, a type of fruit in which a flattened wing of fibrous, papery tissue develops from the ovary wall. A samara is a simple dry fruit, and is indehiscent (not opening along a seam). The shape of a samara enables the wind to carry the seed farther away from the tree than regular seeds would go, and is thus a form of anemochory. In some cases the seed is in the centre of the wing, as in the elms (genus ''Ulmus''), the hoptree ('' Ptelea trifoliata''), and the bushwillows (genus '' Combretum''). In other cases the seed is on one side, with the wing extending to the other side, making the seed autorotate as it falls, as in the maples (genus ''Acer'') and ash trees (genus '' Fraxinus''). There are also single-wing samara such as mahogany (genus Swietenia) which have a shape that enables fluttering. Some species that normally produce paired samaras, such as '' Acer pseudoplatanus'', can also produce them in groups of three or four. File:TripleSy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bath, Somerset
Bath () is a city in the Bath and North East Somerset unitary area in the ceremonial counties of England, county of Somerset, England, known for and named after its Roman Baths (Bath), Roman-built baths. At the 2021 Census, the population was 101,557. Bath is in the valley of the River Avon (Bristol), River Avon, west of London and southeast of Bristol. The city became a World Heritage Site in 1987, and was later added to the transnational World Heritage Site known as the "Great Spa Towns of Europe" in 2021. Bath is also the largest city and settlement in Somerset. The city became a spa with the Latin name ' ("the waters of Sulis") 60 AD when the Romans built Roman Baths (Bath), baths and a temple in the valley of the River Avon, although List of geothermal springs in the United Kingdom, hot springs were known even before then. Bath Abbey was founded in the 7th century and became a religious centre; the building was rebuilt in the 12th and 16th centuries. In the 17th ce ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
William Jackson Bean
William Jackson Bean (26 May 1863 in Yorkshire – 19 April 1947 in Kew, Surrey) was a British botanist and plantsman, who was curator of Kew Gardens from 1922 to 1929. He was responsible for some of the present collections of trees and woody plants there. Bean began his career at Kew Gardens as a trainee gardener. He remained at Kew for over 45 years, reaching the position of curator in 1922. Bean wrote a history of Kew Gardens, which was published in 1908. He wrote the first two-volume edition of the reference work ''Trees and Shrubs Hardy in the British Isles'', which was published in 1914. A revised four-volume edition of this work remains a standard reference work for woody plants grown in Britain today. Bean retired from Kew in 1929. In his retirement Bean wrote three other books: ''Shrubs for Amateurs'' in 1924, ''Ornamental Trees for Amateurs'' in 1925, and ''Wall Shrubs and Hardy Climbers'' in 1939. He also revised and expanded ''Trees and Shrubs'' several times. Bean ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rochester, New York
Rochester () is a city in the U.S. state of New York, the seat of Monroe County, and the fourth-most populous in the state after New York City, Buffalo, and Yonkers, with a population of 211,328 at the 2020 United States census. Located in Western New York, the city of Rochester forms the core of a larger metropolitan area with a population of 1 million people, across six counties. The city was one of the United States' first boomtowns, initially due to the fertile Genesee River Valley, which gave rise to numerous flour mills, and then as a manufacturing center, which spurred further rapid population growth. Rochester rose to prominence as the birthplace and home of some of America's most iconic companies, in particular Eastman Kodak, Xerox, and Bausch & Lomb (along with Wegmans, Gannett, Paychex, Western Union, French's, Constellation Brands, Ragú, and others), by which the region became a global center for science, technology, and research and development ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ulmus Glabra 'Concavaefolia'
The Wych Elm cultivar ''Ulmus glabra'' 'Concavaefolia' (Fontaine, 1968), a form with up-curling leaves, was listed in Beissner's ''Handbuch der Laubholz-Benennung'' (1903) as ''Ulmus montana cucullata'' Hort. 'hooded', the leaf a synonym of the ''Ulmus scabra'' Mill. ''glabra'' Huds.var. ''concavaefolia'' of herbarium specimens. An ''Ulmus campestris cucullata'', of uncertain species, had appeared in Loddiges' 1823 list, but Loudon's brief description (1838) of concave- and hooded-leaved elms was insufficient for later botanists to distinguish them. The earliest unambiguous description appears to be that of Petzold and Kirchner in ''Arboretum Muscaviense'' (1864). Not to be confused with the field elm cultivar 'Webbiana', which also has longitudinally-folded, up-curling leaves (though smaller, shallower-toothed, and with longer petiole), or with concave-leaved field elms with ''down''-curling leaves (see ''U. minor'' 'Concavaefolia' and ''U. minor'' 'Cucullata'). Desc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
