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Equisetum Ramosissimum
''Equisetum ramosissimum'' , known as branched horsetail, is a species of evergreen horsetail (genus ''Equisetum'', subgenus ''Hippochaete''). It is not the same species as ''Equisetum ramosissimum'' , which is a synonym of ''Equisetum giganteum''. Botanists today recognize two subspecies. The type subspecies, ''E. ramosissimum'' subsp. ''ramosissimum'', is native through much of Asia, Europe, and Africa, with an introduced population in the southeast United States The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territorie .... ''E. ramosissimum'' subsp.''debile'', sometimes treated as the separate species '' E. debile'', is found in southeast Asia and some Pacific islands. The type subspecies has more obvious branching from the aerial stem than subspecies ''debile''. References ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Equisetum
''Equisetum'' (; horsetail, snake grass, puzzlegrass) is the only living genus in Equisetaceae, a family of ferns, which reproduce by spores rather than seeds. ''Equisetum'' is a "living fossil", the only living genus of the entire subclass Equisetidae, which for over 100 million years was much more diverse and dominated the understorey of late Paleozoic forests. Some equisetids were large trees reaching to tall. The genus ''Calamites'' of the family Calamitaceae, for example, is abundant in coal deposits from the Carboniferous period. The pattern of spacing of nodes in horsetails, wherein those toward the apex of the shoot are increasingly close together, is said to have inspired John Napier to invent logarithms. Modern horsetails first appeared during the Jurassic period. A superficially similar but entirely unrelated flowering plant genus, mare's tail (''Hippuris''), is occasionally referred to as "horsetail", and adding to confusion, the name "mare's tail" is sometimes ap ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Equisetum Ramosissimum, Slavičín, Czech Republic
''Equisetum'' (; horsetail, snake grass, puzzlegrass) is the only living genus in Equisetaceae, a family (biology), family of Fern, ferns, which reproduce by spores rather than seeds. ''Equisetum'' is a "living fossil", the only living genus of the entire class (biology), subclass Equisetidae, which for over 100 million years was much more diverse and dominated the understorey of late Paleozoic forests. Some equisetids were large trees reaching to tall. The genus ''Calamites'' of the family Calamitaceae, for example, is abundant in coal deposits from the Carboniferous period. The pattern of spacing of nodes in horsetails, wherein those toward the apex of the shoot are increasingly close together, is said to have inspired John Napier to invent logarithms. Modern horsetails first appeared during the Jurassic period. A superficially similar but entirely unrelated flowering plant genus, mare's tail (''Hippuris''), is occasionally referred to as "horsetail", and adding to confusion, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Synonym (taxonomy)
The Botanical and Zoological Codes of nomenclature treat the concept of synonymy differently. * In botanical nomenclature, a synonym is a scientific name that applies to a taxon that (now) goes by a different scientific name. For example, Linnaeus was the first to give a scientific name (under the currently used system of scientific nomenclature) to the Norway spruce, which he called ''Pinus abies''. This name is no longer in use, so it is now a synonym of the current scientific name, ''Picea abies''. * In zoology, moving a species from one genus to another results in a different binomen, but the name is considered an alternative combination rather than a synonym. The concept of synonymy in zoology is reserved for two names at the same rank that refers to a taxon at that rank - for example, the name ''Papilio prorsa'' Linnaeus, 1758 is a junior synonym of ''Papilio levana'' Linnaeus, 1758, being names for different seasonal forms of the species now referred to as ''Araschnia le ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Equisetum Debile
''Equisetum ramosissimum'' var. ''huegelii'', with synonyms including ''Equisetum debile'' and ''Equisetum huegelii'', is a variety of '' Equisetum ramosissimum'', a plant in the family Equisetaceae, found in parts of tropical Asia and China. It is locally known as ne, सिमे झार, , translit=sime jhar and ''translit.'' in Nepal. Description ''Equisetum ramosissimum'' var. ''huegelii'' is a spore-bearing herb with erect, cylindrical, and hollow stems. Branches are long, slender, two or three in whorl, ribbed, nodes encircled by a tight sheath of connate scale like leaves. It has oblong strobilus at the end of branches. Phenology and reproduction ''Equisetum ramosissimum'' var. ''huegelii'' vegetatively propagates by the splitting of rhizome. Spore formation occurs in June to July. After dispersal, spores germinate within a few days at humid condition. Gametophytes reproduce protogynous reproduction i.e., formation of female gamete before male one. Ecology and dis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Equisetum Giganteum
''Equisetum giganteum'', with the common name southern giant horsetail, is a species of horsetail native to South America and Central America, from central Chile east to Brazil and north to southern Mexico. Description It is one of the largest horsetails, growing tall, exceeded only by the closely allied '' Equisetum myriochaetum'' (up to relying on surrounding plants' support). The stems are the stoutest of any horsetail, 1–2 cm diameter (up to 3.5 cm (1.33 inches) in diameter in some populations), and bear numerous whorls of very slender branches; these branches are not further branched, but some terminate in spore cones. Unlike some other horsetails, it does not have separate photosynthetic sterile and non-photosynthetic spore-bearing stems. Populations from northern Chile with very stout stems up to 3.5 cm diameter have sometimes been treated as a separate species ''Equisetum xylochaetum'', [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States
The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territories, nine Minor Outlying Islands, and 326 Indian reservations. The United States is also in free association with three Pacific Island sovereign states: the Federated States of Micronesia, the Marshall Islands, and the Republic of Palau. It is the world's third-largest country by both land and total area. It shares land borders with Canada to its north and with Mexico to its south and has maritime borders with the Bahamas, Cuba, Russia, and other nations. With a population of over 333 million, it is the most populous country in the Americas and the third most populous in the world. The national capital of the United States is Washington, D.C. and its most populous city and principal financial center is New York City. Paleo-Americ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
