The root contains a crystalline solid, that stimulates the growth of epithelium on ulcerated surfaces. It may be administered internally in the treatment of gastric and duodenal juries to sinews, tendons and the periosteum. Acts on joints generally. Neuralgia of knee. Of great use in wounds penetrating to perineum and bones, and in non-union of fractures; irritable stump after amputation, irritable bone at point of fracture. Psoas abscess. Pricking pain and soreness of periosteum.