Urtica piluliferaUrtica pilulifera, also known as the Roman nettle, is a herbaceous annual flowering plant in the family Urticaceae.DescriptionUrtica pilulifera, also known as the Roman nettle, can grow up to around 2 feet tall. Its leaves have stinging hairs, which can irritate the skin.DistributionUrtica pilulifera is native to the countries around the Mediterranean, and eastwards into the Arabian Peninsula and Iran. It has been introduced into Belgium, Germany and Great Britain. It is no longer found in Britain.