单词	frogbit
释义	frogbit /ˈfrɒɡbɪt / noun A floating freshwater plant with creeping stems which bear clusters of small rounded leaves. Two species in the family Hydrocharitaceae: Eurasian frogbit (Hydrocharis morsus-ranae) and American frogbit (Hydromystria laevigatum). Other species found during the survey include coontail, fragrant waterlily, American pondweed, duckweed, American frogbit, cattail, soft-stem bulrush, and arrowhead.... Since its introduction in Ottawa, European frogbit has become one of the dominant plants in many eastern-Ontario wetlands, and has reduced native plant biodiversity. European frogbit can displace native aquatic plants and deplete dissolved oxygen levels, impacting fish and wildlife.
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