Appearance
Each plant is a smooth, round, flat disc one half to one centimeter wide. It produces several minute roots. It also produces a pouch containing male and female flowers. The top part dies in the fall and the plant often overwinters as a turion.
Distribution
Recorded, as "Lemna polyrhiza" L., as mainly in the south and east of the British Isles. In Ireland it is found in counties Down, Antrim and Londonderry.References:
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