Aethusa cynapium
Aethusa cynapium is an annual herb in the plant family Apiaceae, native to Europe, western Asia, and northwest Africa. It is the only member of the genus Aethusa. It is related to Hemlock and Water-dropwort, and like them it is poisonous, though less so than hemlock. It has been introduced into many other parts of the world and is a common weed in cultivated ground.Description
It has a :wikt:fusiform|fusiform root and a smooth hollow branched stem growing to about high, with much divided smooth leaves with an unpleasant smell, and small compound umbels of small irregular white flowers.Toxicity
Poisoning from fool's parsley results in symptoms of heat in the mouth and throat and a post-mortem examination has shown redness of the lining membrane of the gullet and windpipe and slight congestion of the duodenum and stomach. Since some toxins are destroyed by drying, hay containing the plant is not poisonous.
