Wolffia arrhiza
Rootless Duckweed, Rootless Duckweed, Spotless Watermeal
Also known as: Bruniera vivipara Franch. +7 more
- Bruniera vivipara Franch.
- Horkelia arrhiza (L.) Druce
- Lemna arrhiza L.
- Lemna microscopica Schur
- Lenticula arrhiza (L.) Lam.
- Telmatophace arrhiza (L.) Friche-Joset & Montandon, 1856
- Wolffia delilii Miq.
- Wolffia michelii Schleid.
Botanical Data
- Taxonomic Rank: Species
- Botanical Family: Araceae
- WCVP Morphological Data: Recorded natively as a hydroannual.
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Wolffia arrhiza (commonly known as Rootless Duckweed or Spotless watermeal) is an aquatic annual within the Araceae family. It originates in Africa, Temperate Asia, Tropical Asia, and Europe. Within its native range, this species is primarily associated with subtropical conditions.
Macro Climate
Subtropical
Plant Type
Annual
Plant Type
Aquatic Plant
Native Range
Continents (WGSRPD)
AFRICA, ASIA-TEMPERATE, ASIA-TROPICAL, EUROPE
Regions (WGSRPD)
Caucasus, East Tropical Africa, Eastern Asia, Eastern Europe, Indian Subcontinent, Macaronesia, Malesia, Middle Europe, Northeast Tropical Africa, Northern Africa, Northern Europe, South Tropical Africa, Southeastern Europe, Southern Africa, Southwestern Europe, West Tropical Africa, West-Central Tropical Africa, Western Asia, Western Indian Ocean
Botanical Countries (WGSRPD L3)
Algeria, Angola, Austria, Baltic States, Bangladesh, Belgium, Benin, Botswana, Bulgaria, Burundi, Canary Is., Cape Provinces, Central European Russia, Corse, Czechoslovakia, East European Russia, Ethiopia, France, Free State, Germany, Ghana, Great Britain, Greece, Guinea-Bissau, Hungary, India, Iran, Italy, Ivory Coast, Kenya, Korea, KwaZulu-Natal, Lebanon-Syria, Madagascar, Morocco, Mozambique, Netherlands, Nigeria, North Caucasus, Northern Provinces, Philippines, Poland, Portugal, Romania, Rwanda, Senegal, Sicilia, South European Russia, Spain, Taiwan, Tanzania, Togo, Transcaucasus, Tunisia, Uganda, Ukraine, West Himalaya, Yugoslavia, Zaïre
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)
Brazil Southeast, California, Nansei-shoto