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Rhaponticum Pygmaeum
''Rhaponticum'' is a genus of flowering plants in the tribe Cardueae within the family Asteraceae. , it is accepted by Plants of the World Online, but rejected by the Global Compositae Database in favour of '' Leuzea''. Taxonomy The taxonomic history of the genus name ''Rhaponticum'' is complicated. It has been published at least four times according to the International Plant Names Index. The earliest was by Albrecht von Haller in 1742, which is regarded as an invalid name (''nom. inval.''). The next publication was by Sébastien Vaillant in 1754, also an invalid name. The next was by Christian Gottlieb Ludwig in 1757. This has become a conserved name (nom. cons.), with the conserved type species ''Centaurea rhapontica'' (syn. '' Leuzea rhapontica'' subsp. ''rhapontica''). A subsequent publication by Michel Adanson in 1763 is illegitimate. Combining the genera ''Rhaponticum'' and ''Leuzea'' under the latter name was first suggested by Josef Holub in 1973. A 2006 phylogene ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhaponticum Scariosum
''Rhaponticum scariosum'', common name giant scabiosa, is a perennial herbaceous flowering plant of the genus ''Rhaponticum'' of the family Asteraceae. Description The biological form of ''Rhaponticum scariosum'' is ''Raunkiær plant life-form#Hemicryptophytes, hemicryptophyte'' ''Glossary of botanical terms, scapose'',Pignatti S. - Flora d'Italia – Edagricole – 1982. Vol. III, pag. 173 as its overwintering buds are situated just below the soil surface and the floral axis is more or less erect with a few leaves. ''Rhaponticum scariosum'' reaches on average in height. The strong, thick, upright stem is leafy and hairy, woolly-tomentose and usually has only one inflorescence. The leaves are green, while its underside is white-tomentose, with irregularly toothed edges. The basal leaves are heart-shaped and petiolated, about long, the upper leaves are smaller, lanceolate, about long. The flower heads are pink to purple, spherical and very large (about in diameter). The bract ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Michel Adanson
Michel Adanson (7 April 17273 August 1806) was an 18th-century French botanist and naturalist who traveled to Senegal to study flora and fauna. He proposed a "natural system" of taxonomy distinct from the binomial system forwarded by Linnaeus. Personal history Adanson was born at Aix-en-Provence. His family moved to Paris in 1730. After leaving the Collège Sainte-Barbe, he was employed in the cabinets of R. A. F. Réaumur and Bernard de Jussieu, as well as in the Jardin des Plantes, Paris. He attended lectures at the Jardin du Roi and the Collège Royal in Paris from 1741 to 1746. At the end of 1748, funded by a director of the Compagnie des Indes, he left France on an exploring expedition to Senegal. He remained there for five years, collecting and describing numerous animals and plants. He also collected specimens of every object of commerce, delineated maps of the country, made systematic meteorological and astronomical observations, and prepared grammars and dictionarie ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhaponticum Centauroides
''Rhaponticum'' is a genus of flowering plants in the tribe Cardueae within the family Asteraceae. , it is accepted by Plants of the World Online, but rejected by the Global Compositae Database in favour of '' Leuzea''. Taxonomy The taxonomic history of the genus name ''Rhaponticum'' is complicated. It has been published at least four times according to the International Plant Names Index. The earliest was by Albrecht von Haller in 1742, which is regarded as an invalid name (''nom. inval.''). The next publication was by Sébastien Vaillant in 1754, also an invalid name. The next was by Christian Gottlieb Ludwig in 1757. This has become a conserved name (nom. cons.), with the conserved type species ''Centaurea rhapontica'' (syn. '' Leuzea rhapontica'' subsp. ''rhapontica''). A subsequent publication by Michel Adanson in 1763 is illegitimate. Combining the genera ''Rhaponticum'' and ''Leuzea'' under the latter name was first suggested by Josef Holub in 1973. A 2006 phylogene ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhaponticum Carthamoides
''Rhaponticum carthamoides'', synonym ''Leuzea carthamoides'', is a species of herbaceous perennial plant in the family Asteraceae. It is known as maral root or rhaponticum. It inhabits the sub-alpine zone ( above sea level) as well as alpine meadows. It can be found growing wild in Southern Siberia, Kazakhstan, the Altay region, and Western Sayan Mountains. Maral root is widely cultivated throughout Russia and Eastern Europe. This plant derives its traditional name maral root (maralu) from the maral deer that fed on it. ''R. carthamoides'' is high in 20-hydroxyecdysone, a steroidal substance that can disrupt the molting and reproduction of arthropod Arthropods ( ) are invertebrates in the phylum Arthropoda. They possess an arthropod exoskeleton, exoskeleton with a cuticle made of chitin, often Mineralization (biology), mineralised with calcium carbonate, a body with differentiated (Metam ...s. References {{Authority control Cardueae Flora of Central Asia Flora ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhaponticum Canariense
''Rhaponticum'' is a genus of flowering plants in the tribe Cardueae within the family Asteraceae. , it is accepted by Plants of the World Online, but rejected by the Global Compositae Database in favour of '' Leuzea''. Taxonomy The taxonomic history of the genus name ''Rhaponticum'' is complicated. It has been published at least four times according to the International Plant Names Index. The earliest was by Albrecht von Haller in 1742, which is regarded as an invalid name (''nom. inval.''). The next publication was by Sébastien Vaillant in 1754, also an invalid name. The next was by Christian Gottlieb Ludwig in 1757. This has become a conserved name (nom. cons.), with the conserved type species ''Centaurea rhapontica'' (syn. '' Leuzea rhapontica'' subsp. ''rhapontica''). A subsequent publication by Michel Adanson in 1763 is illegitimate. Combining the genera ''Rhaponticum'' and ''Leuzea'' under the latter name was first suggested by Josef Holub in 1973. A 2006 phylogene ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Circumscription (taxonomy)
In biological taxonomy, circumscription is the content of a taxon, that is, the delimitation of which subordinate taxa are parts of that taxon. For example, if we determine that species X, Y, and Z belong in genus A, and species T, U, V, and W belong in genus B, those are our circumscriptions of those two genera. Another systematist might determine that T, U, V, W, X, Y, and Z all belong in genus A. Agreement on circumscriptions is not governed by the Codes of Zoological or Botanical Nomenclature, and must be reached by scientific consensus. A goal of biological taxonomy is to achieve a stable circumscription for every taxon. This goal conflicts, at times, with the goal of achieving a natural classification that reflects the evolutionary history of divergence of groups of organisms. Balancing these two goals is a work in progress, and the circumscriptions of many taxa that had been regarded as stable for decades are in upheaval in the light of rapid developments in molecu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
