Frostbite

Tall Grass Prairie and Eastern Deciduous Forest:

Common Name: Weeping Willow

Genus and Species Name: Salix babylonica

Active Chemical Ingredients: Salicylic acid

Usage of specimen: To treat pain and frostbite

Preparation: Tincture from bark treats pain and rub treats frostbite

Sources: 
Morstead, P. (n.d.). Willow. Retrieved September 7, 2015, from http://www.digherbs.com/willow.html 

Other steps for treatment: Soak affected area in water, starting off with cold water and working your way to hot.