There, behind glass, she kept belladonna; hemlock; nightshade, which could induce visions and was said to be in the ointment that allowed witches to fly; henbane, known as black nightshade, used by men to attract women and by women to bring rain; mandrake, an herb said to scream when plucked from the ground by its roots; thorn apple, used for healing and for breaking hexes, but only in tiny amounts, otherwise death might result.