| NOUN | plant | alligator grass, alligator weed, Alternanthera philoxeroides | prolific South American aquatic weed having grasslike leaves and short spikes of white flowers |
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| Meaning | prolific South American aquatic weed having grasslike leaves and short spikes of white flowers; clogs waterways with dense floating masses. | |
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| Synonyms | alligator weed, Alternanthera philoxeroides | |
| Member of | Alternanthera, genus Alternanthera | genus of low herbs of tropical America and Australia |
| Broader | weed | Any plant that crowds out cultivated plants |
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