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Definition of Alligator grass
1. Noun. Prolific South American aquatic weed having grasslike leaves and short spikes of white flowers; clogs waterways with dense floating masses.
Exact synonyms: Alligator Weed, Alternanthera Philoxeroides
Group relationships: Alternanthera, Genus Alternanthera
Generic synonyms: Weed
Group relationships: Alternanthera, Genus Alternanthera
Generic synonyms: Weed