alligator weed

Noun
  1. Prolific South American aquatic weed having grasslike leaves and short spikes of white flowers;
    Clogs waterways with dense floating masses (synset 111845216)
    is a type of: weed - any plant that crowds out cultivated plants
    belongs to: alternanthera, genus alternanthera - genus of low herbs of tropical America and Australia; includes genus Telanthera
    same as: alligator grass, alternanthera philoxeroides

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