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.
Rose hip seed oil Rose hip seed oil Rose hip seed oil is a pressed seed oil, extracted from the seeds of the wild rose bush ("Rosa moschata" or "Rosa rubiginosa") in the southern Andes. Rosehip seed oil can also be extracted from "Rosa canina", which grows in many regions of the world including South Africa and Europe. The oil contains provitamin A (mostly beta-Carotene). It has been wrongly said to contain retinol (vitamin A) which is a vitamin solely made by animals from provitamin A. It does however contain levels (up to .357 ml/L) of tretinoin or all-trans retinoic acid, a vitamin A