“Avoid any plant with milky sap except dandelion. Avoid fruits that are divided into five segments. Avoid red plants – hemlock has reddish-purple splotches on its stem, and though the red stem of rhubarb can be eaten if cooked, its leaves are poisonous. And avoid anything that tastes or smells of bitter almonds or peaches, or anything that stings or numbs the skin or tongue.”