Lady-s-thumb meaning

lādēzthum
A weedy perennial plant (Persicaria maculata) having clusters of small pinkish flowers and usually a dark blotch near the center of the leaf.
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An annual plant (Polygonum persicaria) of the buckwheat family, with dense spikes of pinkish or purplish flowers.
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Origin of lady-s-thumb

  • Possibly from the belief that the blotch was left by the Virgin Mary when she pinched a leaf and rejected it while looking for water pepper, a similar plant that lacks the blotch and is used as a condiment

    From American Heritage Dictionary of the English Language, 5th Edition