"The death of Chris McCandless should serve as a caveat to other foragers: Even when some parts of a plant are known to be edible, other parts of the same speci

"The death of Chris McCandless should serve as a caveat to other foragers: Even when some parts of a plant are known to be edible, other parts of the same species may contain dangerous concentrations of toxic compounds." Definitely, the most obvious example is potatoes. The fruit and other parts contain solanine. In general there is a great amount of danger around us, within 100 square meters of my home I can recognize at least 5/6 toxic species, so when one learns to eat a plant, it is important to also learn how all the similar plans that are dangerous look like, and what part of the plans are edible and what not.