Polygonum arenastrum
Common Knotweed, Doorweed
Other regional names: Equal Leaved Knotgrass +4 more
- Equal Leaved Knotgrass
- Matweed
- Oval Leaf Knotweed
- Ovalleaf Knotweed
- Prostrate Knotweed
Botanical Data
- Taxonomic Rank: Species
- Botanical Family: Polygonaceae
- WCVP Morphological Data: Recorded natively as a annual.
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Polygonum arenastrum (commonly known as Common Knotweed or Doorweed) is an annual within the Polygonaceae family. It originates in Africa, Temperate Asia, Tropical Asia, and Europe. Within its native range, this species is most commonly linked to temperate conditions.
Macro Climate
Temperate
Plant Type
Annual
Native Range
Continents (WGSRPD)
AFRICA, ASIA-TEMPERATE, ASIA-TROPICAL, EUROPE
Regions (WGSRPD)
Caucasus, China, Eastern Europe, Indian Subcontinent, Macaronesia, Middle Asia, Middle Europe, Mongolia, 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, Central European Russia, Chita, Corse, Czechoslovakia, Denmark, East Aegean Is., East European Russia, Finland, France, Germany, Greece, Hungary, Iran, Iraq, Irkutsk, Italy, Kamchatka, Khabarovsk, Krasnoyarsk, Kriti, Krym, Kuril Is., Madeira, Magadan, Manchuria, Mongolia, Morocco, Netherlands, North Caucasus, North European Russia, Northwest European Russia, Norway, Pakistan, Palestine, Portugal, Primorye, Romania, Sakhalin, Sardegna, Sicilia, Sinai, South European Russia, Spain, Sweden, Switzerland, Transcaucasus, Tunisia, Turkey, Turkey-in-Europe, Turkmenistan, Tuva, Ukraine, West Himalaya, West Siberia, Yakutskiya, 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, Arizona, Arkansas, British Columbia, California, Chile Central, Chile South, Colorado, Connecticut, Delaware, Florida, Georgia, Great Britain, Idaho, Illinois, Indiana, Iowa, Ireland, Japan, Kansas, Kentucky, Labrador, Louisiana, Maine, Manitoba, Maryland, Massachusetts, Mexico Northwest, Michigan, Minnesota, Missouri, Montana, Nebraska, Nevada, New Brunswick, New Hampshire, New Jersey, New Mexico, New York, New Zealand North, Newfoundland, North Carolina, North Dakota, Northwest Territories, Nova Scotia, Ohio, Oklahoma, Ontario, Oregon, Pennsylvania, Poland, Prince Edward I., Québec, Rhode I., Saskatchewan, South Carolina, South Dakota, Tasmania, Tennessee, Texas, Utah, Vermont, Virginia, Washington, West Virginia, Wisconsin, Wyoming, Zimbabwe