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|Noun||1.||genus Mercurialis - a genus of slender herbs belonging to the family Euphorbiaceae|
rosid dicot genus - a genus of dicotyledonous plants
boys-and-girls, herb mercury, herbs mercury, Mercurialis annua - Eurafrican annual naturalized in America as a weed; formerly dried for use as a purgative, diuretic or antisyphilitic