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Tyge W. Böcher
Tyge Wittrock Böcher (25 October 1909 – 15 March 1983) was a Danish botanist, evolutionary biologist, plant ecologist and phytogeographer. He was born in Copenhagen to physician Einar Böcher and wife Cathinca née Andersen. ''Steen B. Böcher'', professor of geography, was his brother. Tyge Böcher was professor of botany at the University of Copenhagen from 1954 to 1979. He was a prolific scientific writer, leaving some 250 scholarly books and articles. His scientific research covered as diverse phylogenetic lineages as vascular plants, bryophytes, lichens and algae and a broad set of disciplines from anatomy, ecology and evolution of plant species to the ecology of plant populations and plant communities. He was particularly interested in chromosomal and ecological races of plant species. He did field work in Greenland, Denmark, various European mountain regions and in Argentina. His investigation of the Greenland flora were particularly ground-breaking. He was a co-found ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plant Communities
A plant community is a collection or association of plant species within a designated geographical unit, which forms a relatively uniform patch, distinguishable from neighboring patches of different vegetation types. The components of each plant community are influenced by soil type, topography, climate and human disturbance. In many cases there are several soil types present within a given plant community. This is because the soil type within an area is influenced by two factors, the rate at which water infiltrates or exits (via evapotranspiration) the soil, as well as the rate at which organic matter (any carbon-based compound within the environment, such as decaying plant matter) enters or decays from the soil. Plant communities are studied substantially by ecologists, due to providing information on the effects of dispersal, tolerance to environmental conditions, and response to disturbance of a variety of plant species, information valuable to the comprehension of various plant ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cell Biology
Cell biology (also cellular biology or cytology) is a branch of biology that studies the structure, function, and behavior of cells. All living organisms are made of cells. A cell is the basic unit of life that is responsible for the living and functioning of organisms. Cell biology is the study of structural and functional units of cells. Cell biology encompasses both prokaryotic and eukaryotic cells and has many subtopics which may include the study of cell metabolism, cell communication, cell cycle, biochemistry, and cell composition. The study of cells is performed using several microscopy techniques, cell culture, and cell fractionation. These have allowed for and are currently being used for discoveries and research pertaining to how cells function, ultimately giving insight into understanding larger organisms. Knowing the components of cells and how cells work is fundamental to all biological sciences while also being essential for research in biomedical fields such as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pulsatilla Vulgaris
''Pulsatilla vulgaris'', the pasqueflower, is a species of flowering plant belonging to the buttercup family (biology), family (Ranunculaceae), found locally on calcareous grassland in Europe, and widely cultivated in gardens. It was considered part of the genus ''Anemone'', to which it is closely related. Several sources still list ''Anemone pulsatilla'' as the accepted name, with ''Pulsatilla vulgaris'' as a synonym (taxonomy), synonym. Other variations of its common name include European pasqueflower and common pasqueflower. The name may also be split in two - pasque flower. Description This herbaceous plant, herbaceous perennial plant develops upright rhizomes, which function as food-storage organs. Its leaves and stems are long, soft, silver-grey and hairy. It grows to high and when it is fruit-bearing up to . The roots go deep into the soil. The finely-dissected leaf, leaves are arranged in a rosette and appear with the bell-shaped flower in early spring. The purple flo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pulsatilla Vernalis
''Pulsatilla vernalis'' (spring pasqueflower, arctic violet, lady of the snows) is a species of flowering plant in the family Ranunculaceae, native to mountainous habitats in Europe. Growing to high and wide, it is a semi-evergreen perennial with hairy, divided leaves. In early spring it bears anemone-like flowers which are up to in diameter, white flushed with violet on the outer surface of the petals, and prominent yellow stamens. The specific epithet ''vernalis'' means "of spring". In cultivation it is suitable for an alpine garden or alpine house, with sharply drained soil in full sun. Though very hardy it dislikes winter wetness. It has gained the Royal Horticultural Society's Award of Garden Merit. It was the county flower of the former county Oppland, Norway and was depicted in the county coat of arms. It is also the county flower of Härjedalen, Sweden and South Karelia, Finland Finland ( fi, Suomi ; sv, Finland ), officially the Republic of Finland (; ), ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pulsatilla Pratensis
''Pulsatilla pratensis'' (syn. ''Anemone pratensis''), the small pasque flower, is a species of flowering plant in the family Ranunculaceae, native to central and eastern Europe, from southeast Norway and western Denmark south and east to Bulgaria. It grows from near sea level in the north of the range, up to in the south of its range.Flora Europaeapratensis''/ref>Blamey, M. & Grey-Wilson, C. (1989). ''Flora of Britain and Northern Europe''. . Name The Latin specific epithet ''pratensis'' means "from the meadow", referring to one of its typical habitats. Description It is a herbaceous perennial plant growing to tall. The leaves are finely divided and thread-like, and densely covered with silvery hairs. The flowers are long, pendulous, bell-like, the tepals with reflexed tips; flower colour varies from purple in the north of the species' range to greenish-violet in the south. The flowers are hermaphrodite, and are pollinated by bees; flowering is from early to mid spring. Subs ... [...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] |
Pulsatilla
The genus ''Pulsatilla'' contains about 40 species of herbaceous perennial plants native to meadows and prairies of North America, Europe, and Asia. Derived from the Hebrew word for Passover, "pasakh", the common name pasque flower refers to the Easter (Passover) flowering period, in the spring. Common names include pasque flower (or pasqueflower), wind flower, prairie crocus, Easter flower, and meadow anemone. Several species are valued ornamentals because of their finely-dissected leaves, solitary bell-shaped flowers, and plumed seed heads. The showy part of the flower consists of sepals, not petals. Taxonomy The genus ''Pulsatilla'' was first formally named in 1754 by the English botanist Philip Miller. The type species is ''Pulsatilla vulgaris'', the European pasque flower. It is sometimes considered a subgenus under the genus ''Anemone'' or as an informally named "group" within ''Anemone'' subg. ''Anemone'' sect. ''Pulsatilloides''. Species , Kew's Plants of the World On ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Doris Löve
Doris Benta Maria Löve, ''née'' Wahlén (born 2 January 1918 in Kristianstad – deceased 25 February 2000 in San Jose, California) was a Swedish systematic botanist, particularly active in the Arctic. Biography Doris Löve was born in Kristianstad, Sweden. She studied botany at Lund University from 1937. She married her fellow student and colleague, the Icelander Áskell Löve. She received her PhD in botany in 1944. She focused her doctorate on the sexuality of ''Melandrium''. After their studies, the couple moved to Iceland. They moved to Winnipeg in 1951, to Montreal in 1955, and to Boulder in 1965. At universities where Áskell Löve taught, Doris Löve could not hold a faculty position at the same time as her husband. They finally moved to San Jose, California, in 1974. Together, Áskell and Doris Löve undertook numerous investigations of the chromosome numbers of plants and their use in plant systematics. They published numerous accounts in this field, and are consid ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Áskell Löve
Áskell Löve (20 October 1916 – 29 May 1994) was an Icelandic systematic botanist, particularly active in the Arctic. Education Áskell studied botany at Lund University, Sweden, from 1937. He received his PhD in 1942 in botany and a D.Sc. degree in genetics the year after. From 1941 to 1945, he was a research associate at Lund University and a corresponding geneticist at the University of Iceland. Work In 1945, where he served as director of ''Institute of Botany and Plant Breeding'' at the University of Iceland 1945–1951. Then, the family moved to North America, where Áskell became associate professor of botany at the University of Manitoba, Canada. In 1956, he became ''Professeur de Recherches'' at Université de Montréal and, in 1964 professor of biology at the University of Colorado at Boulder, which he remained until 1974. Áskell was awarded a Guggenheim fellow in 1963 and elected member of the Icelandic Academy of Sciences. He was a co-founder of the Flora Eu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Boechera
''Boechera'' (rockcress) is a genus of the family Brassicaceae. It was named after the Danish botanist Tyge W. Böcher (1909–1983), who was known for his research in alpine plants, including the mustards ''Draba'' and ''Boechera holboellii''. According to recent molecular-based studies, ''Boechera'' is closely related to the genus ''Arabidopsis'' which also includes the widely known model plant ''Arabidopsis thaliana''. Until recently, members of this genus were included in the genus ''Arabis'', but have been separated from that genus based on recent genetic and cytological data. Unlike the genus ''Arabis'' (x=8) ''Boechera'' has a base chromosome number of x=7. Many taxa are triploid. ''Boechera'' is a primarily North American genus, most diverse in the western United States, and its distribution range also includes Greenland and the Russian Far East. The genus is poorly known, and species within are difficult to separate morphologically though some clearly distinct species ar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flora Europaea
The ''Flora Europaea'' is a 5-volume encyclopedia of plants, published between 1964 and 1993 by Cambridge University Press. The aim was to describe all the national Floras of Europe in a single, authoritative publication to help readers identify any wild or widely cultivated plant in Europe to the subspecies level. It also provides information on geographical distribution, habitat preference, and chromosome number, where known. The ''Flora'' was released in CD form in 2001, and the Royal Botanic Garden Edinburgh have made an index to the plant names available online. History The idea of a pan-European Flora was first mooted at the 8th International Congress of Botany in Paris in 1954. In 1957, Britain's Science and Engineering Research Council provided grants to fund a secretariat of three people, and Volume 1 was published in 1964. More volumes were issued in the following years, culminating in 1980 with the monocots of Volume 5. The royalties were put into a trust fund admini ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
