Parietaria Difussa, commonly known as spreading pellitory or spreading wall pellitory, is a plant species belonging to the Urticaceae family. Some synonyms for this species include Parietaria canariensis, Parietaria judaica, Parietaria officinalis, Parietaria mauritanica, and Parietaria diffusa. Spreading pellitory is a creeping perennial plant with lobed leaves and small green flowers. It is commonly found in rocky areas, walls, and pavements and is known for its medicinal properties. It has been used traditionally for treating respiratory problems, skin irritation, and allergies. The plant also has a culinary use in some countries, where it is added to salads or used as a tea ingredient.