Ryania Speciosa Var
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Ryania Speciosa Var
''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 alkaloid ryanodine 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 speciosa'' is a species of plant family, plant in the family Salicaceae. The species is significant partly because the alkaloid ryanodine was originally extracted from this South American plant. It is used as a piscicide. Variety (bota ...'' * '' Ryania spruceana'' References External links * * {{Authority control Salicaceae Salicaceae genera ...
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Ryania Speciosa
''Ryania speciosa'' is a species of plant family, plant in the family Salicaceae. The species is significant partly because the alkaloid ryanodine was originally extracted from this South American plant. It is used as a piscicide. Variety (botany), Varieties The Catalogue of Life lists these varieties: * Ryania speciosa var. bicolor, ''R. s.'' var. ''bicolor'' * Ryania speciosa var. chocensis, ''R. s.'' var. ''chocoensis'' * Ryania speciosa var. minor, ''R. s.'' var. ''minor'' * Ryania speciosa var. mutisii, ''R. s.'' var. ''mutisii'' (extinct) * Ryania speciosa var. panamensis, ''R. s.'' var. ''panamensis'' * Ryania speciosa var. stipularis, ''R. s.'' var. ''stipularis'' * Ryania speciosa var. subuliflora, ''R. s.'' var. ''subuliflora'' * Ryania speciosa var. tomentella, ''R. s.'' var. ''tomentella'' * Ryania speciosa var. tomentosa, ''R. s.'' var. ''tomentosa'' References M. Vahl, 1797 ''In: Eclog. Am. 1: 51, t. 9 (1796) [1797]'' External links

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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 alkaloid ryanodine 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 speciosa'' is a species of plant family, plant in the family Salicaceae. The species is significant partly because the alkaloid ryanodine was originally extracted from this South American plant. It is used as a piscicide. Variety (bota ...'' * '' Ryania spruceana'' References External links * * {{Authority control Salicaceae Salicaceae genera ...
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Catalogue Of Life
The Catalogue of Life (CoL) 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 from 165 peer-reviewed taxonomic databases that 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 e ...
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Martin Vahl
Martin Henrichsen Vahl (10 October 1749 – 24 December 1804) was a Denmark-Norway, 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 Naturhistorieselskabet, 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 Va ...
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Alkaloid
Alkaloids are a broad class of natural product, naturally occurring organic compounds that contain at least one nitrogen atom. Some synthetic compounds of similar structure may also be termed alkaloids. Alkaloids are produced by a large variety of organisms including bacteria, fungus, fungi, Medicinal plant, plants, and animals. They can be purified from crude extracts of these organisms by acid-base extraction, or solvent extractions followed by silica-gel column chromatography. Alkaloids have a wide range of pharmacology, pharmacological activities including antimalarial medication, antimalarial (e.g. quinine), asthma, antiasthma (e.g. ephedrine), chemotherapy, anticancer (e.g. omacetaxine mepesuccinate, homoharringtonine), cholinomimetic (e.g. galantamine), vasodilation, vasodilatory (e.g. vincamine), Antiarrhythmic agent, antiarrhythmic (e.g. quinidine), analgesic (e.g. morphine), antibacterial (e.g. chelerythrine), and anti-diabetic, antihyperglycemic activities (e.g. berb ...
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Flacourtiaceae
The Flacourtiaceae is a defunct family of flowering plants whose former members have been scattered to various families, mostly to the Achariaceae and Salicaceae. It was so vaguely defined that hardly anything seemed out of place there and it became a dumping ground for odd and anomalous genera, gradually making the family even more heterogeneous. In 1975, Hermann Sleumer noted that "Flacourtiaceae as a family is a fiction; only the tribes are homogeneous." In Cronquist's classification, the Flacourtiaceae included 79–89 genera and 800–1000 species. Of these, many, including the type genus '' Flacourtia'', have now been transferred to the Salicaceae in the molecular phylogeny-based classification, known as the APG IV system, established by the Angiosperm Phylogeny Group. In the list below, the Salicaceae are circumscribed broadly. Some taxonomists further divide the Salicaceae ''sensu lato'' into three families: Salicaceae ''sensu stricto ''Sensu'' is a Latin word meanin ...
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