Quercus petraea
Hydrolysable tannins can be extracted from different vegetable plants, such as chestnut wood ("Castanea sativa"), oak wood ("Quercus robur", "Quercus petraea" and "Quercus alba"), tara pods ("Caesalpinia spinosa"), gallnuts ("Quercus infectoria" and "Rhus semialata"), myrobalan ("Terminalia chebula"), sumac ("Rhus coriaria") and Aleppo gallnuts ("Andricus kollari").