water shamrock
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Related to water shamrock: water clover, Marsilea quadrifolia
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| Noun | 1. |  water shamrock - 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 surfacegenus Menyanthes, Menyanthes - the type genus of the Menyanthaceae; one species: bogbeans aquatic plant, hydrophyte, hydrophytic plant, water plant - a plant that grows partly or wholly in water whether rooted in the mud, as a lotus, or floating without anchorage, as the water hyacinth |
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