Seed when castor beans have been ingested by animals. In addition, seeds containing amygdalin—apple, apricot, bitter almond, peach, plum, cherry, quince, and others—when consumed in sufficient amounts, may cause cyanide poisoning. Other seeds that contain poisons include annona, cotton, custard apple, datura, uncooked durian, golden chain, horse-chestnut, larkspur, locoweed, lychee, nectarine, rambutan, rosary pea, sour sop, sugar apple, wisteria, and yew. The seeds of the strychnine tree are also poisonous, containing the poison strychnine. The seeds of many legumes, including the common bean ("Phaseolus vulgaris"), contain proteins called lectins which can cause gastric distress if the beans are eaten without cooking.
Fruit of the Poisonous Tree (Once Upon a Time) Fruit of the Poisonous Tree (Once Upon a Time) "Fruit of the Poisonous Tree" is the 11th episode of the American fairy tale/drama television series "Once Upon a Time", which aired in the United States on ABC on January 29, 2012. The series takes place in the fictional seaside town of Storybrooke, Maine, in which the residents are actually characters from various fairy tales that were transported to the "real world" town by a powerful curse. In this episode, Emma Swan (Jennifer Morrison) is asked by Sidney Glass (Giancarlo Esposito) for help uncovering evidence that could expose Regina's (Lana Parrilla)