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Ryania Angustifolia
''Ryania'' is a genus of flowering plants in the family Salicaceae; it was previously listed in the now defunct family Flacourtiaceae. The genus is significant partly because the ryanoid insecticides are derived from, and have the same mode of action as the alkaloid ryanodine, which was originally extracted from ''Ryania speciosa''. The Catalogue of Life includes these species: * '' Ryania angustifolia'' * ''Ryania canescens'' * ''Ryania dentata'' * ''Ryania mansoana'' * ''Ryania pyrifera'' * ''Ryania riedeliana'' * ''Ryania sauricida'' * ''Ryania speciosa'' * ''Ryania spruceana ''Ryania'' is a genus of flowering plants in the family Salicaceae; it was previously listed in the now defunct family Flacourtiaceae. The genus is significant partly because the ryanoid insecticides are derived from, and have the same mode o ...'' References External links * * {{Authority control Salicaceae Salicaceae genera ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Martin Vahl
Martin Henrichsen Vahl (10 October 1749 – 24 December 1804) was a Danish-Norwegian botanist, herbalist and zoologist. Biography Martin Vahl was born in Bergen, Norway and attended Bergen Cathedral School. He studied botany at the University of Copenhagen and at Uppsala University under Carl Linnaeus. He edited '' Flora Danica'' fasc. XVI-XXI (1787–1799), ''Symbolæ Botanicæ'' I-III (1790–1794), ''Eclogæ Americanæ'' I-IV (1796–1807) and ''Enumeratio Plantarum'' I-II (1804–1805). He lectured at the University of Copenhagen Botanical Garden from 1779 to 1782. Vahl made several research trips in Europe and North Africa between 1783 and 1788. He became professor at the Society for Natural History at the University of Copenhagen in 1786 and was a full professor of botany from 1801 to his death. In 1792, he was elected a foreign member of the Royal Swedish Academy of Sciences. He died in Copenhagen, Denmark at age 55. His son Jens Vahl also became a botanist. Au ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Catalogue Of Life
The Catalogue of Life is an online database that provides an index of known species of animals, plants, fungi, and microorganisms. It was created in 2001 as a partnership between the global Species 2000 and the American Integrated Taxonomic Information System. The Catalogue is used by research scientists, citizen scientists, educators, and policy makers. The Catalogue is also used by the Biodiversity Heritage Library, the Barcode of Life Data System, Encyclopedia of Life, and the Global Biodiversity Information Facility. The Catalogue currently compiles data fro165 peer-reviewed taxonomic databasesthat are maintained by specialist institutions around the world. , the COL Checklist lists 2,067,951 of the world's 2.2m extant species known to taxonomists on the planet at present time. Structure The Catalogue of Life employs a simple data structure to provide information on synonymy, grouping within a taxonomic hierarchy, common names, distribution and ecological environment. I ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ryania Sauricida
''Ryania'' is a genus of flowering plants in the family Salicaceae; it was previously listed in the now defunct family Flacourtiaceae. The genus is significant partly because the ryanoid insecticides are derived from, and have the same mode of action as the alkaloid ryanodine, which was originally extracted from ''Ryania speciosa''. The Catalogue of Life includes these species: * '' Ryania angustifolia'' * '' Ryania canescens'' * '' Ryania dentata'' * '' Ryania mansoana'' * '' Ryania pyrifera'' * '' Ryania riedeliana'' * '' Ryania sauricida'' * ''Ryania speciosa'' * ''Ryania spruceana ''Ryania'' is a genus of flowering plants in the family Salicaceae; it was previously listed in the now defunct family Flacourtiaceae. The genus is significant partly because the ryanoid insecticides are derived from, and have the same mode o ...'' References External links * * {{Authority control Salicaceae Salicaceae genera ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ryania Speciosa
''Ryania speciosa'' is a species of plant in the family Salicaceae. The species is significant partly because the ryanoid insecticides are derived from, and have the same mode of action as the alkaloid ryanodine, which was originally extracted from this South American plant, which is also used as a piscicide. Varieties The Catalogue of Life lists these varieties: * ''R. s.'' var. ''bicolor'' * ''R. s.'' var. ''chocoensis'' * ''R. s.'' var. ''minor'' * ''R. s.'' var. ''mutisii'' (extinct) * ''R. s.'' var. ''panamensis'' * ''R. s.'' var. ''stipularis'' * ''R. s.'' var. ''subuliflora'' * ''R. s.'' var. ''tomentella'' * ''R. s.'' var. ''tomentosa'' References M. Vahl, 1797 ''In: Eclog. Am. 1: 51, t. 9 (1796) 797 __NOTOC__ Year 797 (Roman numerals, DCCXCVII) was a common year starting on Sunday (link will display the full calendar) of the Julian calendar. The denomination 797 for this year has been used since the early medieval period, when the Anno Dom ... ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Genus
Genus ( plural genera ) is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below family. In binomial nomenclature, the genus name forms the first part of the binomial species name for each species within the genus. :E.g. '' Panthera leo'' (lion) and '' Panthera onca'' (jaguar) are two species within the genus ''Panthera''. ''Panthera'' is a genus within the family Felidae. The composition of a genus is determined by taxonomists. The standards for genus classification are not strictly codified, so different authorities often produce different classifications for genera. There are some general practices used, however, including the idea that a newly defined genus should fulfill these three criteria to be descriptively useful: # monophyly – all descendants of an ancestral taxon are grouped together (i.e. phylogenetic analysis should c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alkaloid
Alkaloids are a class of basic BASIC (Beginners' All-purpose Symbolic Instruction Code) is a family of general-purpose, high-level programming languages designed for ease of use. The original version was created by John G. Kemeny and Thomas E. Kurtz at Dartmouth College ..., natural product, naturally occurring organic compounds that contain at least one nitrogen atom. This group also includes some related compounds with neutral and even weakly acidic properties. Some synthetic compounds of similar structure may also be termed alkaloids. In addition to carbon, hydrogen and nitrogen, alkaloids may also contain oxygen, sulfur and, more rarely, other elements such as chlorine, bromine, and phosphorus.Chemical Encyclopedia: alkaloids xumuk.ru Alkaloids are produced by a large variety of organisms includi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
