genus Zannichellia

Từ điển WordNet v3.1 - WordNet Dictionary

noun

horned pondweed: completely submerged herbs;
in some classifications included in Potamogetonaceae
• Syn:
Zannichellia
• Hypernyms:
monocot genus, liliopsid genus
• Member Holonyms:
Zannichelliaceae, family Zannichelliaceae