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|Noun||1.||genus Limnobium - American frogbit|
liliopsid genus, monocot genus - genus of flowering plants having a single cotyledon (embryonic leaf) in the seed
family Hydrocharidaceae, family Hydrocharitaceae, frogbit family, frog's-bit family, Hydrocharidaceae, Hydrocharitaceae - simple nearly stemless freshwater aquatic plants; widely distributed