Alternanthera philoxeroides

Từ điển WordNet v3.1 - WordNet Dictionary

noun

prolific South American aquatic weed having grasslike leaves and short spikes of white flowers;
clogs waterways with dense floating masses
• Syn:
alligator weed, alligator grass
• Hypernyms:
weed
• Member Holonyms:
Alternanthera, genus Alternanthera