Thapsia garganica, the italian thapsia, deadly carrots, or drias plant, is a species of flowering plant in the carrot family, Apiaceae. It is a perennial native to the Mediterranean Basin, including Portugal, Spain, Italy, Greece, Turkey, Algeria, Tunisia, and Libya.
Two subspecies are accepted. Thapsia garganica subsp. garganica – Algeria, Greece, Italy, Libya, Portugal, Spain, Tunisia, and Turkey Thapsia garganica subsp. messanensis – Sicily
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