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Cerastium Nigrescens
''Cerastium nigrescens'', commonly known as the Shetland mouse-ear, Shetland mouse-eared chickweed or Edmondston's chickweed, is an endemic flowering plant found in Shetland, Scotland. It was first recorded in 1837 by botanist Thomas Edmondston, who was 12 at the time. For a long time it was synonymised with arctic mouse-ear ''Cerastium arcticum'' but it is now widely regarded as a separate species. Although reported from two other sites in the 19th century, it currently grows only on two serpentine hills on the island of Unst Unst (; sco, Unst; nrn, Ønst) is one of the North Isles of the Shetland Islands, Scotland. It is the northernmost of the inhabited British Isles and is the third-largest island in Shetland after Mainland and Yell. It has an area of . Unst ... (see Keen of Hamar). The numbers of ''Cerastium nigrescens'' can vary dramatically from year to year, for reasons that are unclear (probably due to a varying rates of seedling germination and survival ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thomas Edmondston
Thomas Edmondston (1825–1846) was a British-born botanist, born in Buness, Unst. The family of Edmondston (also spelt Edmonston) was prominent in 19th-century Shetland. Thomas Edmondston's uncle, also Thomas Edmondston, was laird of the Buness estate on Unst and host to many scientific visitors to Shetland. Another uncle, Dr Arthur Edmondston, had written ''A View of the Ancient and Present State of the Zetland Islands'' in 1809. His father, Laurence Edmondston, was also an accomplished naturalist. Edmondston compiled the first known list of Shetland plants at the age of 11. He discovered several rare plants growing on the serpentine rocks on Unst, including the endemic Shetland Mouse-ear ''Cerastium nigrescens'', known as Edmondston's Chickweed on the island. In 1845, he produced his ''Flora of Shetland'', which, despite a few shortcomings, was a considerable achievement given his age and it is still an important reference for Shetland botany. Less well known is his ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endemism
Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found elsewhere. For example, the Cape sugarbird is found exclusively in southwestern South Africa and is therefore said to be ''endemic'' to that particular part of the world. An endemic species can be also be referred to as an ''endemism'' or in scientific literature as an ''endemite''. For example '' Cytisus aeolicus'' is an endemite of the Italian flora. '' Adzharia renschi'' was once believed to be an endemite of the Caucasus, but it was later discovered to be a non-indigenous species from South America belonging to a different genus. The extreme opposite of an endemic species is one with a cosmopolitan distribution, having a global or widespread range. A rare alternative term for a species that is endemic is "precinctive", which applies to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flowering Plant
Flowering plants are plants that bear flowers and fruits, and form the clade Angiospermae (), commonly called angiosperms. The term "angiosperm" is derived from the Greek words ('container, vessel') and ('seed'), and refers to those plants that produce their seeds enclosed within a fruit. They are by far the most diverse group of land plants with 64 orders, 416 families, approximately 13,000 known genera and 300,000 known species. Angiosperms were formerly called Magnoliophyta (). Like gymnosperms, angiosperms are seed-producing plants. They are distinguished from gymnosperms by characteristics including flowers, endosperm within their seeds, and the production of fruits that contain the seeds. The ancestors of flowering plants diverged from the common ancestor of all living gymnosperms before the end of the Carboniferous, over 300 million years ago. The closest fossil relatives of flowering plants are uncertain and contentious. The earliest angiosperm fossils ar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shetland
Shetland, also called the Shetland Islands and formerly Zetland, is a subarctic archipelago in Scotland lying between Orkney, the Faroe Islands and Norway. It is the northernmost region of the United Kingdom. The islands lie about to the northeast of Orkney, from mainland Scotland and west of Norway. They form part of the border between the Atlantic Ocean to the west and the North Sea to the east. Their total area is ,Shetland Islands Council (2012) p. 4 and the population totalled 22,920 in 2019. The islands comprise the Shetland (Scottish Parliament constituency), Shetland constituency of the Scottish Parliament. The local authority, the Shetland Islands Council, is one of the 32 council areas of Scotland. The islands' administrative centre and only burgh is Lerwick, which has been the capital of Shetland since 1708, before which time the capital was Scalloway. The archipelago has an oceanic climate, complex geology, rugged coastline, and many low, rolling hills. The lar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Synonym (taxonomy)
The Botanical and Zoological Codes of nomenclature treat the concept of synonymy differently. * In botanical nomenclature, a synonym is a scientific name that applies to a taxon that (now) goes by a different scientific name. For example, Linnaeus was the first to give a scientific name (under the currently used system of scientific nomenclature) to the Norway spruce, which he called ''Pinus abies''. This name is no longer in use, so it is now a synonym of the current scientific name, ''Picea abies''. * In zoology, moving a species from one genus to another results in a different binomen, but the name is considered an alternative combination rather than a synonym. The concept of synonymy in zoology is reserved for two names at the same rank that refers to a taxon at that rank - for example, the name ''Papilio prorsa'' Linnaeus, 1758 is a junior synonym of ''Papilio levana'' Linnaeus, 1758, being names for different seasonal forms of the species now referred to as ''Araschnia le ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cerastium Arcticum
''Cerastium arcticum'', the Arctic mouse-ear chickweed or Arctic mouse-ear, is a flower distributed at parts of western and southern Greenland, Baffin Island, Labrador, Iceland, Scotland, Norway and Svalbard. It is a perennial herb that grows in tufts, sometimes loosely, generally in damp places and on open gravel. Most of the plant is pubescent, the hairs appearing stiff. Leaves are elliptical. The flowers are white, rather large, beautiful when fully expanded, single or two together. Petals are deeply notched and considerably longer than sepals. Image:Cerastium arcticum upernavik 2007-06-26 2.jpg, close up Image:Cerastium arcticum upernavik 2007-06-26 1.JPG, stem See also * Flora of Svalbard There are over 190 vascular plant species on the Norwegian Arctic archipelago of Svalbard. This figure does not include algae, mosses, and lichens, which are non-vascular plants. For an island so far north, this number of species constitutes an a ... References arcticum Al ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Serpentine Group
Serpentine subgroup (part of the kaolinite-serpentine group in the category of phyllosilicates) are greenish, brownish, or spotted minerals commonly found in serpentinite. They are used as a source of magnesium and asbestos, and as decorative stone. The name comes from the greenish colour and smooth or scaly appearance from the Latin , meaning "serpent rock". Serpentine subgroup is a set of common rock-forming hydrous magnesium iron phyllosilicate () minerals, resulting from the metamorphism of the minerals that are contained in mafic to ultramafic rocks. They may contain minor amounts of other elements including chromium, manganese, cobalt or nickel. In mineralogy and gemology, serpentine may refer to any of the 20 varieties belonging to the serpentine subgroup. Owing to admixture, these varieties are not always easy to individualize, and distinctions are not usually made. There are three important mineral polymorphs of serpentine: antigorite, lizardite and chrysotile. Serpen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Unst
Unst (; sco, Unst; nrn, Ønst) is one of the North Isles of the Shetland Islands, Scotland. It is the northernmost of the inhabited British Isles and is the third-largest island in Shetland after Mainland and Yell. It has an area of . Unst is largely grassland, with coastal cliffs. Its main village is Baltasound, formerly the second-largest herring fishing port after Lerwick and now the location of a leisure centre and the island's airport. Other settlements include Uyeasound, home to Greenwell's Booth (a Hanseatic warehouse) and Muness Castle (built in 1598 and sacked by pirates in 1627); and Haroldswick, location of a boat museum and a heritage centre. Etymology There are three island names in Shetland of unknown and possibly pre-Celtic origin: Unst, Fetlar and Yell. The earliest recorded forms of these three names do carry Norse meanings: ''Fetlar'' is the plural of ''fetill'' and means "shoulder-straps", ''Ǫmstr'' is "corn-stack" and ''í Ála'' is from ''ál'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Keen Of Hamar
Keen of Hamar is a nature reserve on Unst, in Shetland, Scotland, managed by Scottish Natural Heritage. The reserve is primarily of botanical interest, for example for populations of '' Cerastium nigrescens'', a plant unique to Unst. Keen of Hamar was designated a special area of conservation on 17 March 2005. It is also a site of special scientific interest. The site is of outstanding interest for the interaction of plants with the thin, chromium metal-rich soil. Scottish Natural Heritage provides further information on its SSSsite management statement The geological features at the site are a highlight of Geopark Shetland. See also *Geology of Scotland *Hagdale Chromate Railway The Hagdale Chromate Railway was a narrow-gauge railway on the Isle of Unst, in the Shetland Islands. Built in 1907, it connected the chromite quarries at Hagdale with a pier at Baltasound Baltasound (or Baltasund) is the largest s ... References External linksThe Story of Kee ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cerastium
''Cerastium'' is a genus of annual, winter annual, or perennial plants belonging to the family Caryophyllaceae. They are commonly called mouse-ear chickweed. Species are found nearly worldwide but the greatest concentration is in the northern temperate regions. There are about 200 species. A number are common weeds in fields and on disturbed ground. ''Cerastium'' species are used as food plants by the larvae of some Lepidoptera species including ''Coleophora chalcogrammella'' (which feeds exclusively on ''Cerastium arvense'') and ''Coleophora striatipennella'' (which has been recorded on ''Cerastium fontanum''). Selected species *'' Cerastium aleuticum'' – Aleutian chickweed *'' Cerastium alpinum'' – alpine chickweed *''Cerastium arcticum'' – arctic mouse-ear chickweed *''Cerastium arvense'' – field chickweed *'' Cerastium axillare'' – Trans-Pecos chickweed *''Cerastium beeringinanum'' – Bering chickweed *'' Cerastium bialynickii'' *'' Cerastium biebersteinii'' – ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endemic Flora Of Scotland
Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found elsewhere. For example, the Cape sugarbird is found exclusively in southwestern South Africa and is therefore said to be ''endemic'' to that particular part of the world. An endemic species can be also be referred to as an ''endemism'' or in scientific literature as an ''endemite''. For example '' Cytisus aeolicus'' is an endemite of the Italian flora. '' Adzharia renschi'' was once believed to be an endemite of the Caucasus, but it was later discovered to be a non-indigenous species from South America belonging to a different genus. The extreme opposite of an endemic species is one with a cosmopolitan distribution, having a global or widespread range. A rare alternative term for a species that is endemic is "precinctive", which applies to s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Biota Of Shetland
Biota may refer to: * Biota (ecology), the plant and animal life of a region * Biota (plant), common name for a coniferous tree, ''Platycladus orientalis'' * Biota, Cinco Villas, a municipality in Aragon, Spain * Biota (band), a band from Colorado, USA * Biota! Biota! was a proposed aquarium in the Silvertown Quays redevelopment, on the site of Millennium Mills adjacent to the Royal Victoria Dock, part of the wider Thames Gateway regeneration project for East London. The £80 million building by Ter ..., a proposed aquarium in London * ''Biota'' (album), a 1982 album by Mnemonist Orchestra See also * {{disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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