- An aquatic Southern United states perennial plant (Alternanthera philoxeroides) having opposing, lance-shaped leaves and tight clusters of tiny whitish flowers. It is a mat-forming weed in cozy, freshwater habitats, for instance the southeast united states of america.
- prolific South US aquatic weed having grasslike leaves and short spikes of white blossoms; blockages waterways with dense floating masses
Hypernym for "alligator weed"
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