Polygonum aviculare
Doorweed, English Knotgrass
Other regional names: Knotgrass
- Knotgrass
Also known as: Centinodium aviculare (L.) Fourr., 1869 +18 more
- Centinodium aviculare (L.) Fourr., 1869
- Polygonum arenarium Raf. ex Meisn.
- Polygonum aviculare subsp. vegetum Ledeb.
- Polygonum aviculare var. aviculare
- Polygonum aviculare var. crassifolium Lange
- Polygonum aviculare var. erectum (Roth) W.D.J.Koch
- Polygonum aviculare var. eximium (Lindman) Asch. & Graebn.
- Polygonum aviculare var. rurivgum (Jord. ex Boreau) Gentil.
- Polygonum aviculare var. virgatum Peterm.
- Polygonum erythrellum Gand., 1882
- Polygonum gnidiifolium Gand., 1882
- Polygonum heterophyllum subsp. virgatum (Asch. & Graebn.) H.Scholz
- Polygonum lapidicola Gand., 1882
- Polygonum microphyllum Ruiz
- Polygonum montivagum Gand., 1882
- Polygonum pusillum Guss. ex Nyman
- Polygonum retinerve Vorosch.
- Polygonum segetale Lindm.
- Polygonum stypticum K.Koch.
Botanical Data
- Taxonomic Rank: Species
- Botanical Family: Polygonaceae
- WCVP Morphological Data: Recorded natively as a annual or perennial.
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Polygonum aviculare (commonly known as Doorweed or English Knotgrass) is an annual or perennial herbaceous plant within the Polygonaceae family. It naturally occurs in Africa, Temperate Asia, Tropical Asia, and Europe. Within its native range, this species is primarily associated with temperate conditions.
Macro Climate
Temperate
Plant Type
Herbaceous Perennial
Plant Type
Annual
Native Range
Continents (WGSRPD)
AFRICA, ASIA-TEMPERATE, ASIA-TROPICAL, EUROPE
Regions (WGSRPD)
Arabian Peninsula, Caucasus, China, Eastern Asia, Eastern Europe, Indian Subcontinent, Indo-China, Macaronesia, Middle Asia, Middle Europe, Northeast Tropical Africa, Northern Africa, Northern Europe, Russian Far East, Siberia, Southeastern Europe, Southwestern Europe, Western Asia
Botanical Countries (WGSRPD L3)
Afghanistan, Albania, Algeria, Altay, Amur, Austria, Azores, Baleares, Baltic States, Belarus, Belgium, Bulgaria, Buryatiya, Canary Is., Central European Russia, China North-Central, China South-Central, China Southeast, Chita, Corse, Cyprus, Czechoslovakia, Denmark, East Aegean Is., East European Russia, East Himalaya, Egypt, Eritrea, Ethiopia, Finland, France, Føroyar, Germany, Great Britain, Greece, Hainan, Hungary, Iceland, Inner Mongolia, Iran, Iraq, Ireland, Irkutsk, Italy, Japan, Kamchatka, Kazakhstan, Khabarovsk, Kirgizistan, Korea, Krasnoyarsk, Kriti, Krym, Kuril Is., Lebanon-Syria, Libya, Madeira, Magadan, Manchuria, Morocco, Myanmar, Nansei-shoto, Nepal, Netherlands, North Caucasus, North European Russia, Northwest European Russia, Norway, Pakistan, Palestine, Poland, Portugal, Primorye, Qinghai, Romania, Sakhalin, Sardegna, Saudi Arabia, Sicilia, South European Russia, Spain, Sweden, Switzerland, Tadzhikistan, Taiwan, Tibet, Transcaucasus, Tunisia, Turkey, Turkey-in-Europe, Turkmenistan, Ukraine, Uzbekistan, West Himalaya, West Siberia, Xinjiang, Yakutskiya, Yemen, Yugoslavia
Introduced Range
An “Introduced” distribution indicates that the plant is recorded outside its native range in that region as a result of deliberate or accidental human introduction. Introduced records may include casual, naturalized or invasive populations, but do not include plants that are only cultivated or planted without self-sustaining populations.
Botanical Countries (Non-Native)
Alabama, Alaska, Alberta, Angola, Argentina Northeast, Argentina Northwest, Argentina South, Arizona, Arkansas, Bolivia, Brazil South, Brazil Southeast, British Columbia, California, Cape Provinces, Chad, Chile Central, Chile North, Chile South, Colombia, Colorado, Connecticut, Delaware, District of Columbia, Ecuador, Falkland Is., Florida, Free State, Georgia, Guatemala, Hawaii, Idaho, Illinois, Indiana, Iowa, Juan Fernández Is., Kansas, Kentucky, Kenya, KwaZulu-Natal, Lesotho, Louisiana, Maine, Manitoba, Maryland, Massachusetts, Mexico Central, Mexico Northeast, Mexico Northwest, Michigan, Minnesota, Mississippi, Missouri, Montana, Namibia, Nebraska, Nevada, New Brunswick, New Hampshire, New Jersey, New Mexico, New York, New Zealand North, Newfoundland, North Carolina, North Dakota, Northern Provinces, Northwest Territories, Nova Scotia, Oklahoma, Ontario, Oregon, Paraguay, Pennsylvania, Prince Edward I., Québec, Rhode I., Saskatchewan, South Carolina, South Dakota, Svalbard, Tasmania, Tennessee, Texas, Tristan da Cunha, Uruguay, Utah, Vermont, Virginia, Washington, West Virginia, Wyoming, Yukon, Zimbabwe