Not only in Africa, but we also have a dangerous tree, it is called sumac. It is only necessary to touch his leaves, as the intolerable itching, pain begins, then a tumor arises. If you do not go to the doctor on time, the outcome can be deplorable. Sumach is often called an "acetic tree". But despite its danger, suma is used for medicinal purposes, its juice helps in the treatment of rheumatism and certain skin diseases.