menyanthes trifoliata   (TTS Sound)

The noun menyanthes trifoliata has 1 sense

• water shamrock, buckbean, bogbean, bog myrtle, marsh trefoil, Menyanthes trifoliata -- (perennial plant of Europe and America having racemes of white or purplish flowers and intensely bitter trifoliate leaves; often rooting at water margin and spreading across the surface)