The burdock leaf is used some burn care workers as a moisture barrier in dressing burns. It also appears to help with pain management and to speed healing time. Burn care workers hold that it eases dressing changes and appears to impede bacterial growth on the wound site.
Here is a larger picture of the burdock leaf than I put in the Burdock Leaves – An Innovative Burn Treatment article. This larger picture will help you better identify the plant.