Plant of the boraginácea family, considered weeds by farmers and traditionally used as a poultice to remove warts and as a healing agent. Today we know that it has a toxic alkaloid, cinoglosin. People have named it in many ways as verruguera, scorpion tail, litmus, sunflower, malgirasol, heliotrope. . . Botanists identify it as heliotropium europaeum.