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Henning Eiler Petersen
Henning Eiler (Ejler) Petersen (22 August 1877 – 22 May 1946) was a Danish mycologist, botanist and marine biologist. He made a major contribution to unveiling the mysterious die-back of eel grass in Northern European waters in the early 20th century as a pathogen outbreak. Petersen's main research was in what was then known as ''lower fungi'' – Chytridiomycota and Oomycetes, but he also studied the systematics of Red algae. Parallel to these lines of research, he investigated the intraspecific morphological variation in plant species – which would today be called quantitative genetics. The Oomycete genus '' Petersenia'' is named to his honour. Selected scientific bibliography * Petersen, H.E. (1903) Notes sur les Phycomycètes observés dans les téguments vides des nymphes de Phryganées avec description de trios espèces nouvelles de Chytridinées. Journal de Botanique 17 (6–7): 214–222. * Petersen, H.E. (1905) Contributions à la connaissance des Phycomycètes marins ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Denmark
) , song = ( en, "King Christian stood by the lofty mast") , song_type = National and royal anthem , image_map = EU-Denmark.svg , map_caption = , subdivision_type = Sovereign state , subdivision_name = Danish Realm, Kingdom of Denmark , established_title = History of Denmark#Middle ages, Consolidation , established_date = 8th century , established_title2 = Christianization , established_date2 = 965 , established_title3 = , established_date3 = 5 June 1849 , established_title4 = Faroese home rule , established_date4 = 24 March 1948 , established_title5 = European Economic Community, EEC 1973 enlargement of the European Communities, accession , established_date5 = 1 January 1973 , established_title6 = Greenlandic home rule , established_date6 = 1 May 1979 , official_languages = Danish language, Danish , languages_type = Regional languages , languages_sub = yes , languages = German language, GermanGerman is recognised as a protected minority language in t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Botanisk Tidsskrift
''Botanisk Tidsskrift'' (standard abbreviation ''Bot. Tidsskr.'') was a Danish mixed scientific and amateur journal concerning botany, issued in Copenhagen by the Danish Botanical Society. It was published from 1866 to 1980, when it fused with Botaniska Notiser, Friesia and Norwegian Journal of Botany to form the Nordic Journal of Botany. Monographs were published in a parallel series, Dansk Botanisk Arkiv. Full digital text of Botanisk Tidsskrift is available at Biodiversity Heritage Libraryand full text access is at DanBIF. References External links Botanisk Tidsskriftat HathiTrust Digital Library Botanisk Tidsskriftat Biodiversity Heritage Library The Biodiversity Heritage Library (BHL) is the world’s largest open access digital library for biodiversity literature and archives. BHL operates as worldwide consortiumof natural history, botanical, research, and national libraries working toge ... Botanisk Tidsskriftat Botanical Scientific Journals Magazines established ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pimpinella Saxifraga
''Pimpinella saxifraga'', known as burnet-saxifrage, solidstem burnet saxifrage, lesser burnet is a plant species in the family Apiaceae, a native of the British Isles and temperate Europe and Western Asia. It is neither a burnet, which its leaves resemble, nor a saxifrage although it has a similar herbal effect as a diuretic. The plant makes up a large part of the turf in some of southern England's chalk downs. It is highly nutritious for sheep and cattle, and in the past was cultivated on calcareous soils for fodder. John Gerard's ''Herball'' (1597) commends the plant's properties, and states that it is: "A speciall helpe to defend the heart from noysome vapours and from the infection of the Plague or Pestilence, and all other contagious diseases for which purpose it is of great effect, the juice thereof being taken in some drink...it is a capital wound herb for all sorts of wounds, both of the head and body, either inward or outward, used either in juice or decoction of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vaccinium Uliginosum
''Vaccinium uliginosum'' (bog bilberry, bog blueberry, northern bilberry or western blueberry) is a Eurasian and North American flowering plant in the genus ''Vaccinium'' within the heath family. Distribution ''Vaccinium uliginosum'' is native to cool temperate regions of the Northern Hemisphere, at low altitudes in the Arctic, and at high altitudes south to the Pyrenees, the Alps, and the Caucasus in Europe, the mountains of Mongolia, northern China, the Korean Peninsula and central Japan in Asia, and the Sierra Nevada in California and the Rocky Mountains in Utah in North America. It grows on wet acidic soils on heathland, moorland, tundra, and in the understory of coniferous forests, from sea level in the Arctic, up to altitude in the south of the range. Description ''Vaccinium uliginosum'' is a small deciduous shrub growing to tall, rarely tall, with brown stems (unlike the green stems of the closely related bilberry). The leaves are oval, long and wide, blue-green wit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dansk Botanisk Arkiv
''Dansk Botanisk Arkiv'' was a Danish scientific journal or monograph series concerning botany, issued by the Danish Botanical Society. It was published from 1913 to 1980. Articles were written in Danish, German, English and French. The synonym Res Botanicae Danicae was printed on the front page of some issues. In 1980, it was fused with '' Botaniska Notiser Supplement'' under the name '' Opera Botanica'', which since then has been the monograph series of the ''Nordic Journal of Botany''. External links Dansk Botanisk Arkivat HathiTrust HathiTrust Digital Library is a large-scale collaborative repository of digital content from research libraries including content digitized via Google Books and the Internet Archive digitization initiatives, as well as content digitized locally ... Digital Library Dansk Botanisk Arkivat Botanical Scientific Journals 1913 establishments in Denmark Botany journals Publications established in 1913 {{botany-journal-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anthriscus Sylvestris
''Anthriscus sylvestris'', known as cow parsley, wild chervil, wild beaked parsley, Queen Anne's lace or keck, is a herbaceous biennial or short-lived perennial plant in the family Apiaceae (Umbelliferae), genus ''Anthriscus''. It is also sometimes called mother-die (especially in the UK), a name that is also applied to the common hawthorn. It is native to Europe, western Asia and northwestern Africa. It is related to other diverse members of Apiaceae, such as parsley, carrot, hemlock and hogweed. It is often confused with ''Daucus carota'', another member of the Apiaceae also known as "Queen Anne's lace" or "wild carrot". Description Cow parsley is an upright herbaceous (non-woody) perennial, growing to tall. The stems are hollow, striate (striped with parallel, longitudinal lines), furrowed, and green in colour with flushes of purple, with a diameter up to . It has tiny hairs on the stem, rachis, and leaf stalks which are difficult to see but can easily be detected by t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phytomyxea
The Phytomyxea are a class of parasites that are cosmopolitan, obligate biotrophic protist parasites of plants, diatoms, oomycetes and brown algae. They are divided into the orders Plasmodiophorida (ICZN, or Plasmodiophoromycota, ICBN) and Phagomyxida. Plasmodiophorids are best known as pathogens or vectors for viruses of arable crops (e.g. club root in Brassicaceae, powdery scab in potatoes, and rhizomania in beets, especially sugar beets and some spinaches). Life cycle They typically develop within plant cells, causing the infected tissue to grow into a gall or scab. Important diseases caused by phytomyxeans include club root in cabbage and its relatives, and powdery scab in potatoes. These are caused by species of ''Plasmodiophora'' and ''Spongospora'', respectively.Agrios, George N. (2005). ''Plant Pathology''. 5th ed. Academic Presslink The vegetative form is a multinucleate cell, called a plasmodium. This ultimately divides to form new spores, which are released w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carl Hansen Ostenfeld
Carl Emil Hansen Ostenfeld (born Carl Emil Ostenfeld-Hansen) (3 August 1873 – 16 January 1931) was a Danish systematic botanist. He graduated from the University of Copenhagen under professor Eugenius Warming. He was a keeper at the Botanical Museum 1900–1918, when he became professor of botany at the Royal Veterinary and Agricultural University. In 1923, by the early retirement of Raunkiær's, Ostenfeld became professor of botany at the University of Copenhagen and director of the Copenhagen Botanical Garden, both positions held until his death in 1931. He was a member of the Royal Danish Academy of Sciences and Letters and served on the board of directors of the Carlsberg Foundation. Ostenfeld is known as an explorer of the Danish flora, including marine plankton, as well as the flora of Western Australia. Ostenfeld participated in the Ingolf expedition (1885-86) to the waters around Iceland and Greenland, and in 1911 in the International Phytogeographic Excursion ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diapensia Lapponica
''Diapensia lapponica'', the pincushion plant, is a plant in the family Diapensiaceae, the only circumboreal species in the genus '' Diapensia'', the others being mainly in the Himalaya and on mountains in southwestern China. This species likely became circumboreal-circumpolar rctic–alpineafter it jumped to arctic habitat from North China and Russia. The most likely candidate for ancestor is a white-flowered '' D. purpurea'' The plants grow on exposed rocky ridges that are kept free from snow by high winds. ''Diapensia lapponica'' is extremely slow and low-growing and cannot compete with plants that overtop it. The plant is very sensitive to higher temperatures (global warming a lethal problem in Sweden) and so is often in misty foggy habitat. It usually dies when transplanted to lowland gardens and so this is not recommended. Cold-treated or wild and winter-collected seed will germinate indoors. The seed and leaves are high in lipids. It is a small cushion-forming evergreen p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diapensiaceae
Diapensiaceae is a small family of flowering plants, which includes 15 species in 6 genera. The genera include '' Berneuxia'' Decne. (1 species), '' Diapensia'' L. (5 species), ''Galax'' Sims (1 species), '' Pyxidanthera'' Michx. (2 species), '' Shortia'' Torr. & A.Gray (4 species), and '' Schizocodon'' Siebold & Zucc. (2 species). Members of this family have little economic importance; however, some members are cultivated by florists. Taxonomy Past literature classified Diapensiaceae as an old family, without defining the meaning of old. The name '' Diapensia'' was given to ''Diapensia lapponica'' by Linnaeus. Previously, it was the Greek name of sanicle. The family, originally including only ''Diapensia lapponica'', was named by Heinrich Friedrich Link in 1829. Concerning the interrelationships in Diapensiaceae, debate still remains regarding the recognition of ''Schizocodon'' and whether it should be separate from ''Shortia''. However, recent molecular studies support the s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Meddelelser Om Grønland
''Meddelelser om Grønland'' ("''Communications on Greenland''") is a Danish scientific periodical which publishes scientific results from all fields of research on Greenland. It was established by Frederik Johnstrup and published as a single series by the Commission for Scientific Investigations in Greenland from 1878 to 1979, with contributions in Danish, German, English or French. In 1979, following the issue of vol. 206, the series was split up into three individually numbered subseries, all published in English: ''Bioscience'', ''Geoscience'', and ''Man & Society''. When publication of the series was handed over to Museum Tusculanum Press Museum Tusculanum Press (Danish: ''Museum Tusculanums Forlag'') is an independent academic press historically associated with the University of Copenhagen, publishing mainly in the humanities, social sciences and theology. It was founded in 1975 as ... in 2008, the original name was revived, now with the official English title ''Monographs o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
