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Knotgrass
Knotgrass or knot grass is the common name for several plants and a moth and may refer to: *''Paspalum distichum'', a species of grass *''Polygonum'', a genus of plants in the buckwheat family, more often known as knot weed *''Acronicta rumicis ''Acronicta rumicis'', the knot grass moth, is a species of moth which is part of the genus '' Acronicta'' and family Noctuidae. It was first described by Carl Linnaeus in his 1758 10th edition of ''Systema Naturae''. It is found in the Pal ...
'', a moth of the family Noctuidae {{Plant common name ...
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Paspalum Distichum
''Paspalum distichum'' is a species of grass. Common names include knotgrass, water finger-grass, couch paspalum, eternity grass, gingergrass, and Thompson grass. Its native range is obscure because it has long been present on most continents, and in most areas it is certainly an introduced species. Its native range probably includes parts of the tropical Americas. This is a perennial grass forming clumps and spreading via rhizomes and stolons. It grows decumbent or erect to a maximum height near 60 centimeters. The inflorescence is usually divided into two branches lined with spikelets. ''Paspalum distichum'' is a food source for several avian species, including the long-tailed widowbird The long-tailed widowbird (''Euplectes progne''), also known as the "sakabula", is a species of bird in the family Ploceidae.Mackworth-Praed, C.W., and C.H. Grant. (1960). ''Birds of Eastern and North Eastern Africa''. Longmans, Green and Co LTD. .... References External links Jepson Manu ...
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Polygonum
''Polygonum'' is a genus of about 130 species of flowering plant in the buckwheat and knotweed family Polygonaceae. Common names include knotweed and knotgrass (though the common names may refer more broadly to plants from Polygonaceae). In the Middle English glossary of herbs ''Alphita'' ( 1400–1425), it was known as ars-smerte. There have been various opinions about how broadly the genus should be defined. For example, buckwheat (''Fagopyrum esculentum'') has sometimes been included in the genus as ''Polygonum fagopyrum''. Former genera such as ''Polygonella'' have been subsumed into ''Polygonum''; other genera have been split off. The genus primarily grows in northern temperate regions. The species are very diverse, ranging from prostrate herbaceous annual plants to erect herbaceous perennial plants. ''Polygonum'' species are occasionally eaten by humans, and are used as food plants by the larvae of some Lepidoptera species – see list. Most species are considered weeds i ...
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