Common Poisonous Plants. Left To Right: Deadly Nightshade (Atropa Belladonna); Fly Blown Mushroom Or Fly Amanita (Agaricus Muscarius Or Amanita Muscaria); Strong Scented Or Poisonous Lettuce (Lactuca Virosa). From The Household Physician, Published Circa 1890.Image #: 1903895 See More From: Ken Welsh