Knife cut

• Common name
• Oak
• Genus and species name
• Quercus
• Habitat
• Eastern decidious forest
• Tallgrass prairie
• Active chemicals 
• Tannic acid
• 
• Uses
• Slow bleeding 
• Reduce skin irritation
• Preparation
• Boil acorns to produce an astringent wash 
• Photo
• 
• Sources
• http://www.sptreefarm.com/buy-live-oak-tree-nursery-planting-information-faqs.html