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Sorbus X Houstoniae
''Karpatiosorbus houstoniae'', or Houston's whitebeam, is a hybrid of two deciduous trees: the common whitebeam (''Sorbus aria'') and the Bristol whitebeam (''Karpatiosorbus bristoliensis''). Only a single example of the hybrid is known to exist, at the Avon Gorge in Bristol, England. The only specimen grows on a cliff below Stokeleigh Camp at Leigh Woods in North Somerset and cannot be accessed without ropes. Description The specimen is a small tree, at least in height. Buds are oval to conical. The leaves of Houston's whitebeam have a similarity to those of Bristol whitebeam, although they are wider. The leaves are teardrop-shaped to teardrop-oval, and about 1.5 times as long as wide, with an apex that tapers to a long point and a base that is relatively wide. The leaves are shallowly, acutely lobed, 7–14% of the way to the central vein. The leaf margins are weakly doubly serrate. The upper surface is dark green and hairless, the lower greenish-white with matted plant ha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sorbus Aria
''Sorbus aria'' (syn. ''Aria nivea''), the whitebeam or common whitebeam, is a deciduous tree, the type species of the subgenus ''Sorbus'' subg. ''Aria'' of the genus ''Sorbus''. It is native to most of Europe as well as North Africa (Algeria, Morocco, Tunisia) and temperate Asia (Armenia, Georgia). Typically compact and domed, with few upswept branches and almost-white underside of the leaves, it generally favours dry limestone and chalk soils. The hermaphrodite cream-white flowers appear in May, are insect pollinated, and go on to produce scarlet berries, which are often eaten by birds. The cultivars ''S. aria'' 'Lutescens', with very whitish-green early leaves, and ''S. aria'' 'Majestica', with large leaves, have both have gained the Royal Horticultural Society's Award of Garden Merit. The berries are edible when overripe ( bletted). File:Sorbus aria-3420.jpg, Foliage and fruit References aria In music, an aria ( Italian: ; plural: ''arie'' , or ''arias'' in comm ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
University Of Bristol
The University of Bristol is a Red brick university, red brick Russell Group research university in Bristol, England. It received its royal charter in 1909, although it can trace its roots to a Society of Merchant Venturers, Merchant Venturers' school founded in 1595 and University College, Bristol, which had been in existence since 1876. Bristol is organised into #Academic structure, six academic faculties composed of multiple schools and departments running over 200 undergraduate courses, largely in the Tyndalls Park area of the city. The university had a total income of £752.0 million in 2020–21, of which £169.8 million was from research grants and contracts. It is the largest independent employer in Bristol. Current academics include 21 fellows of the Academy of Medical Sciences, 13 fellows of the British Academy, 13 fellows of the Royal Academy of Engineering and 44 fellows of the Royal Society. Among alumni and faculty, the university counts 9 Nobel laureates. Bristol is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Karpatiosorbus
''Karpatiosorbus'' (Synonymy: ''Sorbus'' subgenus ''Tormaria'' Májovsky & Bernátová = ''S''. subgenus ''Aria'' x subgenus ''Torminaria'') is a genus of flowering plants in the family Rosaceae, native to Europe, including Crimea, and Algeria. Shrubs or small trees, they appear to have arisen via hybridization events between the clades ''Aria'' (Pers.) Host and ''Torminalis'' Medik. Many of its species propagate solely by apomixis. The genus name of ''Karpatiosorbus'' is in honour of Zoltán Kárpáti (1909–1972), who was a Hungarian (Geo-)Botanist, Taxonomist, Dendrologist and specialist in Sorbus (from central Europe). The genus was circumscribed by Alexander Nikolaevitsch Sennikov and Arto Kurtto in Memoranda Soc. Fauna Fl. Fenn. vol.93 on page 46 in 2017. Species Currently accepted species include: *''Karpatiosorbus acutiserrata'' (C.Németh) Sennikov & Kurtto *''Karpatiosorbus adamii'' (Kárpáti) Sennikov & Kurtto *'' Karpatiosorbus adeana'' (N.Mey.) Sennikov & Kurtto ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wildscreen Festival
Wildscreen is a wildlife conservation charity based in Bristol, England. The charity was founded in December 1987 from a trust which had operated since 1982, with the initial aim of encouraging and applauding excellence in the production of natural history films and television. The founders included Sir Peter Scott and Christopher Parsons OBE, former Head of the BBC Natural History Unit. Wildscreen Film Festival The Wildscreen Festival is the world's leading international festival about nature films. It is held biennially in October in Bristol, England. The festival began in 1982. In 1994, it merged with a biennial wildlife symposium, previously held in the neighbouring city of Bath. At Wildscreen Festival wildlife filmmakers and broadcasters from different parts of the world met to view the latest productions, discuss issues of mutual interest, exchange ideas and compete for the Panda Awards. Over the years since then the festival has significantly expanded its scale and co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Catalogue Of Life
The Catalogue of Life is an online database that provides an index of known species of animals, plants, fungi, and microorganisms. It was created in 2001 as a partnership between the global Species 2000 and the American Integrated Taxonomic Information System. The Catalogue is used by research scientists, citizen scientists, educators, and policy makers. The Catalogue is also used by the Biodiversity Heritage Library, the Barcode of Life Data System, Encyclopedia of Life, and the Global Biodiversity Information Facility. The Catalogue currently compiles data fro165 peer-reviewed taxonomic databasesthat are maintained by specialist institutions around the world. , the COL Checklist lists 2,067,951 of the world's 2.2m extant species known to taxonomists on the planet at present time. Structure The Catalogue of Life employs a simple data structure to provide information on synonymy, grouping within a taxonomic hierarchy, common names, distribution and ecological environment. I ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
International Union For Conservation Of Nature
The International Union for Conservation of Nature (IUCN; officially International Union for Conservation of Nature and Natural Resources) is an international organization working in the field of nature conservation and sustainable use of natural resources. It is involved in data gathering and analysis, research, field projects, advocacy, and education. IUCN's mission is to "influence, encourage and assist societies throughout the world to conserve nature and to ensure that any use of natural resources is equitable and ecologically sustainable". Over the past decades, IUCN has widened its focus beyond conservation ecology and now incorporates issues related to sustainable development in its projects. IUCN does not itself aim to mobilize the public in support of nature conservation. It tries to influence the actions of governments, business and other stakeholders by providing information and advice and through building partnerships. The organization is best known to the wider p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
IUCN Red List
The International Union for Conservation of Nature (IUCN) Red List of Threatened Species, also known as the IUCN Red List or Red Data Book, founded in 1964, is the world's most comprehensive inventory of the global conservation status of biological species. It uses a set of precise criteria to evaluate the extinction risk of thousands of species and subspecies. These criteria are relevant to all species and all regions of the world. With its strong scientific base, the IUCN Red List is recognized as the most authoritative guide to the status of biological diversity. A series of Regional Red Lists are produced by countries or organizations, which assess the risk of extinction to species within a political management unit. The aim of the IUCN Red List is to convey the urgency of conservation issues to the public and policy makers, as well as help the international community to reduce species extinction. According to IUCN the formally stated goals of the Red List are to provide ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sorbus Latifolia
''Sorbus'' is a genus of over 100 species of trees and shrubs in the rose family, Rosaceae. Species of ''Sorbus'' (''s.l.'') are commonly known as whitebeam, rowan (mountain-ash) and service tree. The exact number of species is disputed depending on the circumscription of the genus, and also due to the number of apomictic microspecies, which some treat as distinct species, but others group in a smaller number of variable species. Recent treatmentsRobertson, K. R., J. B. Phipps, J. R. Rohrer, and P. G. Smith. 1991. A Synopsis of Genera in Maloideae (Rosaceae). ''Systematic Botany'' 16: 376–394.McAllister, H. 2005. The Genus ''Sorbus'': Mountain Ash and Other Rowans. Richmond, Surrey, UK: Royal Botanic Gardens, Kew.Potter, D., T. Eriksson, R. C. Evans, S.-H. Oh, J. E. E. Smedmark, D.R. Morgan, M. S. Kerr, and C. S. Campbell. (2007). Phylogeny and classification of Rosaceae. ''Plant Systematics and Evolution''. 266(1–2): 5–43.Campbell C. S., R. C. Evans, D. R. Morgan, T. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Botanical Society Of The British Isles
The Botanical Society of Britain and Ireland (BSBI) is a scientific society for the study of flora, plant distribution and taxonomy relating to Great Britain, Ireland, the Channel Islands and the Isle of Man. The society was founded as the Botanical Society of London in 1836, and became the Botanical Society of the British Isles, eventually changing to its current name in 2013. It includes both professional and amateur members and is the largest organisation devoted to botany in the British Isles. Its history is recounted in David Allen's book ''The Botanists''. The society publishes handbooks and journals, conducts national surveys and training events, and hosts conferences. It also awards grants and bursaries, sets professional standards (with Field Identification Skills Certificates (FISCs)), and works in an advisory capacity for governments and NGOs. The society is managed by a council of elected members, and is a Registered Charity in England & Wales (212560) and Scotland ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Watsonia (journal)
The ''New Journal of Botany'' was a peer-reviewed scientific journal covering research on the native flora of Northern and Western Europe, including population and conservation biology, ecological genetics, autecological, physiological, and phenological studies, plant/animal interactions, and plant biochemistry. It was established in 1949 as ''Watsonia'', with the subtitle ''Journal & Proceedings of the Botanical Society of the British Isles''. It was named after the eighteenth-century British botanist Hewett Watson. The journal was renamed ''New Journal of Botany'' in 2011 with volume numbering restarting at 1. It was discontinued in 2017. The journal was published by Maney Publishing on behalf of the Botanical Society of Britain and Ireland. It was abstracted and indexed in AGRICOLA, Biological Abstracts, BIOSIS Previews, CAB Abstracts, and Scopus Scopus is Elsevier's abstract and citation database launched in 2004. Scopus covers nearly 36,377 titles (22,794 active titles ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Microsatellites
A microsatellite is a tract of repetitive DNA in which certain DNA motifs (ranging in length from one to six or more base pairs) are repeated, typically 5–50 times. Microsatellites occur at thousands of locations within an organism's genome. They have a higher mutation rate than other areas of DNA leading to high genetic diversity. Microsatellites are often referred to as short tandem repeats (STRs) by forensic geneticists and in genetic genealogy, or as simple sequence repeats (SSRs) by plant geneticists. Microsatellites and their longer cousins, the minisatellites, together are classified as VNTR (variable number of tandem repeats) DNA. The name "satellite" DNA refers to the early observation that centrifugation of genomic DNA in a test tube separates a prominent layer of bulk DNA from accompanying "satellite" layers of repetitive DNA. They are widely used for DNA profiling in cancer diagnosis, in kinship analysis (especially paternity testing) and in forensic identifi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carboniferous Limestone
Carboniferous Limestone is a collective term for the succession of limestones occurring widely throughout Great Britain and Ireland that were deposited during the Dinantian Epoch of the Carboniferous Period. These rocks formed between 363 and 325 million years ago. Within England and Wales, the entire limestone succession, which includes subordinate mudstones and some thin sandstones, is known as the Carboniferous Limestone Supergroup. Depositional basins Within Great Britain the suite of rocks known traditionally as the Carboniferous Limestone Series was deposited as marine sediments in three distinct ‘provinces’ separated by contemporary landmasses. One of these landmasses was the Wales-London-Brabant Massif, an east–west aligned belt of land stretching through central Wales and the English Midlands to East Anglia and on into Belgium. The limestones deposited to its south form a distinct South Wales-Mendip province which extends from Pembrokeshire in the west ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
