Also in some plants one part is edible and another part is poisonous. A grocery store example of this is cherries. The fruit is very good, but the seeds contain cyanide which is deadly if you eat enough. The leaves are likewise poisonous and have been known to kill cattle. Just because one part of a plant is edible does not mean that the whole plant is good to eat, and just because a plant is listed as edible does not mean that it is not poisonous.
