味甘苦气寒．入足太阳经．功专益精强阴．入膀胱．除虚热．利小便而通淋．治疝．散恶疮．叶作浴汤．去皮肤风热丹肿．洗眼除雀盲涩痛．恶螵蛸．胁下疼痛．地肤子末酒服良．