Epilobium tetragonum
Southern Willow Herb, Square Stalked Willowherb
Other regional names: Square Stemmed Willow Herb
- Square Stemmed Willow Herb
Also known as: Chamaenerion tetragonum (L.) Moench +13 more
- Chamaenerion tetragonum (L.) Moench
- Chamaenerion tetragonum (L.) Scop.
- Epilobium adnatoparviflorum Griseb.
- Epilobium adnatum f. rodriguezii Hausskn.
- Epilobium adnatum f. stenophyllum Hausskn.
- Epilobium adnatum Griseb.
- Epilobium adnatum var. rodriguezii (Hausskn.) Sennen
- Epilobium decurrens Rchb.
- Epilobium decurrens Spreng., 1812
- Epilobium dregeanum E.Mey. ex Hausskn.
- Epilobium dubium Curtis ex With.
- Epilobium flaccidum Brot.
- Epilobium glabellum var. tetragonum (L.) Maiden & Betche
- Epilobium novum Winterl
Botanical Data
- Taxonomic Rank: Species
- Botanical Family: Onagraceae
- WCVP Morphological Data: Recorded natively as a perennial.
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Naturally occurring in Africa, Temperate Asia, Tropical Asia, and Europe, Epilobium tetragonum (commonly known as Southern Willow-Herb or Square-Stalked Willowherb) is a herbaceous perennial belonging to the Onagraceae family. Within its native range, this species is most commonly linked to temperate conditions. There are naturally occurring subspecies of this species, which are linked below.
Macro Climate
Temperate
Plant Type
Herbaceous Perennial
Native Range
Continents (WGSRPD)
AFRICA, ASIA-TEMPERATE, ASIA-TROPICAL, EUROPE
Regions (WGSRPD)
Caucasus, Eastern Europe, Indian Subcontinent, Macaronesia, Middle Asia, Middle Europe, Northern Africa, Northern Europe, Siberia, Southeastern Europe, Southern Africa, Southwestern Europe, Western Asia
Botanical Countries (WGSRPD L3)
Albania, Algeria, Altay, Austria, Azores, Baleares, Baltic States, Belarus, Belgium, Bulgaria, Canary Is., Cape Provinces, Central European Russia, Corse, Cyprus, Czechoslovakia, East Aegean Is., East European Russia, France, Free State, Germany, Great Britain, Greece, Hungary, Iran, Ireland, Italy, Kazakhstan, Kirgizistan, Krasnoyarsk, Kriti, KwaZulu-Natal, Lebanon-Syria, Lesotho, Madeira, Morocco, Netherlands, North Caucasus, Northern Provinces, Northwest European Russia, Palestine, Poland, Portugal, Romania, Sardegna, Sicilia, South European Russia, Spain, Switzerland, Tadzhikistan, Transcaucasus, Tunisia, Turkey, Turkey-in-Europe, Turkmenistan, Ukraine, Uzbekistan, West Himalaya, West Siberia, Yugoslavia
Introduced Range
Plants flagged as 'Introduced' have been transported outside their native historical range by human activity. While many are common ornamentals, some may become naturalized or invasive in local environments. Local ecological guidelines require verification prior to planting.
Botanical Countries (Non-Native)
Assam, Chile Central, Chile South, Crozet Is., Denmark, Finland, Kerguelen, New Zealand North, Norway, Sweden, Western Australia
Subspecies, Varieties & Forms