Poisonous celery: also known as wild celery, Chinese Pulsatilla, poisonous ginseng, celery leaf hook and spotted poisonous celery. It is a perennial herb shaped like celery. Often eat poisoning by mistake. Distributed in north temperate zone. In China, hemlock is distributed in the marshes near the waterside or ditches in the northeast, northwest and north China. Leaves are like celery leaves, which bloom in summer and stink all over the trees. The whole tree is poisonous, and the flowers are the most poisonous. After eating, it will cause nausea, vomiting, cold hands and feet, quadriplegia and even death. The main toxic components are hemlock, methyl hemlock and hemlock toxin. The effect of toxic alkali is similar to that of curare, which can paralyze motor nerves and inhibit the medulla oblongata center. The toxic dose of human body is 30 ~ 60mg, and the lethal dose is120 ~150mg. Heating and drying can reduce the toxicity of hemlock. Toxins mainly excite the central nervous system. Chinese name: Hemlock. Alias: Niuxinpuzi, Niuxinpuzi, Niuxinpuzi.

Water celery can be eaten, and wild celery (also known as Pulsatilla chinensis, skink and water violet) is poisonous and must not be eaten.

The most obvious difference between water celery and wild celery is whether there are fine hairs on the stem. The stems of wild celery are hairy, but water celery is not. Secondly, the leaves of wild celery are wider and shorter, more like celery, while the leaves and teeth of water celery are slender and slender.