Plants Not to Eat in the Wilderness:

Although we can't describe every inedible plant, here are some generalb guidlines that might prove useful.

Sap
Sap that is white or milky should usually be avoided as well as brightly colored sap.

Fruit
If the fruit of a plant is white then it is often poisonous. Red, blue, or black fruits should also be eaten only if you are sure they are edible.

Taste
Whenever you are unsure about any plant, chew a small amount first. If it is very bitter, sour, acidic, or has a nauseating taste then this plant should be avoided.