Definition
Roman nettle refers to plants from the genus *Urtica*, notorious for their stinging hairs. Imagine accidentally brushing against one and feeling an instant, burning itch! Unlike harmless plants, these nettles inject histamine and other chemicals into your skin, causing that unpleasant sensation. Think of it as nature's booby trap for the unwary. It's like a plant with a built-in defense mechanism, reminding you to respect nature's boundaries. They are found in Europe and can cause severe skin irritation. So, admire them from a distance!