Taxon: Wolffia arrhiza (L.) Horkel ex Wimm.

Genus: Wolffia
Section: Wolffia
Family: Araceae
Subfamily: Lemnoideae
Nomen number: 403878
Place of publication: Fl. Schles. ed. 3, 140. 1857
Link to protologue:
Name Verified on: 20-Dec-1995 by ARS Systematic Botanists. Last Changed: 13-Dec-2002
Species priority site is:
Accessions: 0 in National Plant Germplasm System

Common names:

  • rootless duckweed  (Source: BSBI) - English
  • wurzellose Zwergwasserlinse  (Source: Zander Ency) - German

Economic Importance:

  • Animal food: fodder (fide E. Landolt, pers. comm.)
  • Weed: (fide Atlas WWeed)

Distributional Range:


  • Africa

    • East Tropical Africa: Kenya ; Tanzania ; Uganda
    • Northern Africa: Algeria ; Morocco
    • South Tropical Africa: Angola ; Mozambique
    • Southern Africa: Botswana ; South Africa Cape Province, KwaZulu-Natal, Transvaal
    • West Tropical Africa: Cote D'Ivoire ; Ghana ; Nigeria ; Senegal ; Togo
    • West-Central Tropical Africa: Burundi ; Rwanda
    • Western Indian Ocean: Madagascar
  • Asia-Temperate

    • Caucasus: Georgia
    • Western Asia: Iran ; Israel
  • Asia-Tropical

    • Indian Subcontinent: India Jammu and Kashmir
  • Europe

    • Eastern Europe: Belarus ; Ukraine
    • Middle Europe: Austria ; Belgium ; Germany ; Hungary ; Netherlands ; Poland
    • Northern Europe: United Kingdom
    • Southeastern Europe: Bulgaria ; Croatia ; Italy ; Romania ; Serbia ; Slovenia
    • Southwestern Europe: France ; Portugal ; Spain
  • Southern America

    • Brazil: Brazil Rio de Janeiro

  • Naturalized

  • Asia-Temperate

    • Eastern Asia: Japan
  • Europe

    • Middle Europe: Czech Republic ; Slovakia
  • Northern America

    • Southwestern U.S.A.: United States California
  • Southern America

    • Brazil: Brazil


  • Botanical Society of the British Isles BSBI taxon database (on-line resource). (BSBI)
  • Erhardt, W. et al. Der große Zander: Enzyklopädie der Pflanzennamen. 2008 (Zander Ency)
  • Euro+Med Editorial Committee Euro+Med Plantbase: the information resource for Euro-Mediterranean plant diversity (on-line resource). (EuroMed Plantbase)
  • FNA Editorial Committee 2000. Flora of North America. (F NAmer) 22:152.
  • Govaerts, R. & D. G. Frodin World checklist and bibliography of Araceae (and Acoraceae). 2002 (L Araceae)
  • Hickman, J. C., ed. The Jepson manual: higher plants of California. 1993 (F CalifJep)
  • Holm, L. et al. A geographical atlas of world weeds. 1979 (Atlas WWeed)
  • Jardin botanique national de Belgique Flore du Congo, du Rwanda et du Burundi (Flore d'Afrique centrale). (F Afr Centr)
  • Landolt, E. 1986. Biosystematic investigations in the family of duckweeds (Lemnaceae). 2. The family of Lemnaceae - a monographic study Veröff. Geobot. Inst. ETH Stiftung Rübel Zürich 71:366.
  • Landolt, E. 1994. Taxonomy and ecology of the section Wolffia of the genus Wolffia (Lemnaceae) Ber. Geobot. Inst. E. T. H. Stiftung Rübel 60:147-148.
  • Landolt, E. 1996. pers. comm. (pers. comm.)
  • Saldanha, C. J. & D. H. Nicolson Flora of Hassan district. (F Hassan)
  • Turrill, W. B. et al., eds. Flora of tropical East Africa. (F TE Afr)
  • Tutin, T. G. et al., eds. Flora europaea. (F Eur)


Check other web resources for Wolffia arrhiza (L.) Horkel ex Wimm. :