1.Arnica montana. USDA, NRCS. 2014. The PLANTS Database (http://plants.usda.gov, July 2014). National Plant Data Center, Baton Rouge, LA 70874-4490 USA. Accessed July 27, 2014. 2. Khan IA, Abourashed AE.Leung’s Encyclopedia of Common Natural Ingredients Used in Food, Drugs, and Co...