Plants or plant parts known or suspected to produce poisonous chemical properties, at least in some stage of their life cycle. The poisoning may result from systemic effects via internal digestion or respiratory conditions, or from producing topical skin irritations.
CAUTION: Although BONAP has attempted to indicate all North American plants found within the geographic area that are known or suspected to contain toxins, many toxic effects are individual-specific, rendering some persons as being more susceptible to certain toxins than others. Since additional toxic plants may exist in North America, this summary should not be viewed as a comprehensive listing. Therefore, the Synthesis should not be used in any regard to determine if a particular plant should, or could be used for human consumption without consulting other works or knowledgeable individuals.