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Pyrus Pyraster
''Pyrus pyraster'' ( syn. ''Pyrus communis subsp. pyraster''), also called European wild pear, is a species of pear of the family Rosaceae. This wild pear and ''Pyrus caucasica'' (syn. ''P. communis'' subsp. ''caucasica'') are thought to be the ancestors of the cultivated European pear (''Pyrus communis'' subsp. ''communis''). Both the wild pears are interfertile with domesticated pears. It is sometimes difficult to distinguish ''Pyrus pyraster'' from a common pear. ''Pyrus pyraster'' can reach an age of 100 to 150 years. Description ''Pyrus pyraster'' is a deciduous plant reaching in height as medium-sized shrub and as a tree.Pignatti S. - Flora d'Italia – Edagricole – 1982. Vol. I, pag. 603 Unlike the cultivated form the branches have thorns. The leaves are ovate with serrated margins. The flowers have white petals. The stamens are equal to the length of styles. The flowering period extends from April through May. The fruits reach in diameter and ripen in late s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carl Linnaeus
Carl Linnaeus (; 23 May 1707 – 10 January 1778), also known after his ennoblement in 1761 as Carl von Linné Blunt (2004), p. 171. (), was a Swedish botanist, zoologist, taxonomist, and physician who formalised binomial nomenclature, the modern system of naming organisms. He is known as the "father of modern taxonomy". Many of his writings were in Latin; his name is rendered in Latin as and, after his 1761 ennoblement, as . Linnaeus was born in Råshult, the countryside of Småland, in southern Sweden. He received most of his higher education at Uppsala University and began giving lectures in botany there in 1730. He lived abroad between 1735 and 1738, where he studied and also published the first edition of his ' in the Netherlands. He then returned to Sweden where he became professor of medicine and botany at Uppsala. In the 1740s, he was sent on several journeys through Sweden to find and classify plants and animals. In the 1750s and 1760s, he continued to collect an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sympatry
In biology, two related species or populations are considered sympatric when they exist in the same geographic area and thus frequently encounter one another. An initially interbreeding population that splits into two or more distinct species sharing a common range exemplifies sympatric speciation. Such speciation may be a product of reproductive isolation – which prevents hybrid offspring from being viable or able to reproduce, thereby reducing gene flow – that results in genetic divergence. Sympatric speciation may, but need not, arise through secondary contact, which refers to speciation or divergence in allopatry followed by range expansions leading to an area of sympatry. Sympatric species or taxa in secondary contact may or may not interbreed. Types of populations Four main types of population pairs exist in nature. Sympatric populations (or species) contrast with parapatric populations, which contact one another in adjacent but not shared ranges and do not ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plants For A Future
Plants For A Future (PFAF) is an online not for profit resource for those interested in edible and useful plants, with a focus on temperate regions. The organization's emphasis is on perennial plants, named after the phrase "plans for a future" as wordplay. PFAF is a registered educational charity with the following objectives: The website contains an online database of over 8000 plants: 7000 that can be grown in temperate regions including in the UK, and 1000 plants for tropical situations. The database was originally set up by Ken Fern to include 1,500 plants which he had grown on his 28 acre research site in the South West of England. Since 2008, the database has been maintained by the database administrator employed by the Plants For A Future Charity. Publications *Fern, Ken. ''Plants for a Future: Edible and Useful Plants for a Healthier World''. Hampshire: Permanent Publications, 1997. . *''Edible Plants: An inspirational guide to choosing and growing unusual edible pl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brittany
Brittany (; french: link=no, Bretagne ; br, Breizh, or ; Gallo language, Gallo: ''Bertaèyn'' ) is a peninsula, Historical region, historical country and cultural area in the west of modern France, covering the western part of what was known as Armorica during the period of Roman occupation. It became an Kingdom of Brittany, independent kingdom and then a Duchy of Brittany, duchy before being Union of Brittany and France, united with the Kingdom of France in 1532 as a provinces of France, province governed as a separate nation under the crown. Brittany has also been referred to as Little Britain (as opposed to Great Britain, with which it shares an etymology). It is bordered by the English Channel to the north, Normandy to the northeast, eastern Pays de la Loire to the southeast, the Bay of Biscay to the south, and the Celtic Sea and the Atlantic Ocean to the west. Its land area is 34,023 km2 . Brittany is the site of some of the world's oldest standing architecture, ho ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pyrus Cordata
''Pyrus cordata'', the Plymouth pear, is a rare wild species of pear belonging to the family Rosaceae. It gets its name from the city of Plymouth in Devon, where it was originally found in 1870 The Plymouth pear was one of the British trees to be funded under English Natures Species Recovery Programme. It is a small tree, that grows in hedgerows or at the edge of woods. The Plymouth pear is considered to be either a sub-species of ''Pyrus pyraster'' (European Wild Pear) or a distinct species. It is one of the rarest trees in the UK and it is protected under Schedule 8 of the Wildlife and Countryside Act and seeds have been deposited at Kew's Millennium Seed Bank Description ''Pyrus cordata'' is a deciduous shrub or small tree growing up to 10 metres in height. It is hardy and is not frost tender, but its ability to bear fruit and thus seed is dependent upon favourable weather conditions. It is in flower from April to May. The flowers are hermaphrodite and are pollinated by In ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
South West England
South West England, or the South West of England, is one of nine official regions of England. It consists of the counties of Bristol, Cornwall (including the Isles of Scilly), Dorset, Devon, Gloucestershire, Somerset and Wiltshire. Cities and large towns in the region include Bath, Somerset, Bath, Bristol, Bournemouth, Cheltenham, Exeter, Gloucester, Plymouth and Swindon. It is geographically the largest of the nine regions of England covering , but the third-least populous, with approximately five million residents. The region includes the West Country and much of the ancient kingdom of Wessex. It includes two entire national parks of England and Wales, national parks, Dartmoor and Exmoor (a small part of the New Forest is also within the region); and four List of World Heritage Sites in the United Kingdom, World Heritage Sites: Stonehenge, the Cornwall and West Devon Mining Landscape, the Jurassic Coast and the Bath, Somerset, City of Bath. The northern part of Gloucestershi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
British Isles
The British Isles are a group of islands in the North Atlantic Ocean off the north-western coast of continental Europe, consisting of the islands of Great Britain, Ireland, the Isle of Man, the Inner and Outer Hebrides, the Northern Isles, and over six thousand smaller islands."British Isles", ''Encyclopædia Britannica''. They have a total area of and a combined population of almost 72 million, and include two sovereign states, the Republic of Ireland (which covers roughly five-sixths of Ireland), and the United Kingdom of Great Britain and Northern Ireland. The Channel Islands, off the north coast of France, are normally taken to be part of the British Isles, even though they do not form part of the archipelago. The oldest rocks are 2.7 billion years old and are found in Ireland, Wales and the northwest of Scotland. During the Silurian period, the north-western regions collided with the south-east, which had been part of a separate continental landmass. The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Neolithic
The Neolithic period, or New Stone Age, is an Old World archaeological period and the final division of the Stone Age. It saw the Neolithic Revolution, a wide-ranging set of developments that appear to have arisen independently in several parts of the world. This "Neolithic package" included the introduction of farming, domestication of animals, and change from a hunter-gatherer lifestyle to one of settlement. It began about 12,000 years ago when farming appeared in the Epipalaeolithic Near East, and later in other parts of the world. The Neolithic lasted in the Near East until the transitional period of the Chalcolithic (Copper Age) from about 6,500 years ago (4500 BC), marked by the development of metallurgy, leading up to the Bronze Age and Iron Age. In other places the Neolithic followed the Mesolithic (Middle Stone Age) and then lasted until later. In Ancient Egypt, the Neolithic lasted until the Protodynastic period, 3150 BC.Karin Sowada and Peter Grave. Egypt in th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Archaeophyte
An archaeophyte is a plant species which is non-native to a geographical region, but which was an introduced species in "ancient" times, rather than being a modern introduction. Those arriving after are called neophytes. The cut-off date is usually the beginning of the early modern period (turn of the 15th or 16th century). In Britain, archaeophytes are considered to be those species first introduced prior to the year 1492, when Christopher Columbus arrived in the New World and the Columbian Exchange began. Background Archaeophytes include numerous weed species the seeds of which have been found in archaeological excavations - to which they had been brought by people ( anthropochory), animals (zoochory) or the wind (anemochory). In some cases, introduced species, whether archaeophytes or neophytes, may have been native species before the ice ages, which extirpated vast numbers of plant species. Central European archaeophytes almost all come from the Mediterranean region and th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Escaped Plant
Escaped plants are cultivated plants, usually garden plants, that are not originally native to an area, and due to their dispersal strategies, have escaped from cultivation and have settled in the wild and bred there, whether intentionally or unintentionally. Escaped plants are purposefully introduced plants that have naturalized in the wild and can develop into invasive plants, the settlement of which is to be assessed as problematic. Other commonly used terms include escaped garden plant, garden escapee, escaped ornamental or garden refugee. Some plants are valued as ornamental plants since they are very adaptable and easy to grow, and therefore would escape cultivation and become weedy in various ecosystems with far-reaching ecological and economic consequences. They can also develop into invasive intruders, especially in fragile or unstable ecosystems. Occasionally, their spread can even be traced back to botanical gardens. Therefore, escaped plants are the subject of rese ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tap Roots
''Tap Roots'' is a 1948 Technicolor Western war film set during the American Civil War. It is very loosely based on the true life story of Newton Knight, a farm owner who attempted to secede Jones County from Mississippi.Stephen Jacobs, ''Boris Karloff: More Than a Monster'', Tomahawk Press 2011 p 324 Made by Walter Wanger Productions and Universal Pictures, it was directed by George Marshall and produced by Walter Wanger from a screenplay by Alan Le May, based on the 1942 novel ''Tap Roots'' by James H. Street, with additional dialogue by Lionel Wiggam. The original music was by Frank Skinner and the cinematography by Winton C. Hoch and Lionel Lindon. The film stars Van Heflin and Susan Hayward with Boris Karloff, Julie London, Whitfield Connor, Ward Bond and Richard Long. Karloff plays a Choctaw Indian. A radio version of ''Tap Roots'', with Van Heflin, Susan Hayward and Richard Long reprising their film roles, was broadcast by the Lux Radio Theatre on September 27, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pyrus Nivalis
''Pyrus nivalis'', commonly known as yellow pear, is a species of tree in the family Rosaceae that grows naturally from South-East Europe to Western Asia. Like most pears, its fruit can be eaten raw or cooked; it has a mild sour taste. The plant is very colorful and may grow up to 10 meters tall and 8 meters wide. It is a very hardy plant that is able to survive with a small supply of water and can brave very high/low temperatures. It may hybridize with other pears, producing, for example, ''Pyrus austriaca'' in a cross with ''Pyrus pyraster ''Pyrus pyraster'' ( syn. ''Pyrus communis subsp. pyraster''), also called European wild pear, is a species of pear of the family Rosaceae. This wild pear and ''Pyrus caucasica'' (syn. ''P. communis'' subsp. ''caucasica'') are thought to be the ...''. References External linksInformation from Plants for a Future database [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
