Tobias Barreto Sources of tanninsSources of condensed tannins Areca catechu seed arecatannins Broad bean Vicia faba Grape Vitis vinifera Mimosa bark Acacia mollissima Myrtan or black marlock Eucalyptus redunca Quebracho wood Sources of hydrolysable tannins Chestnut wood Dhawa Anogeissus latifolia Myrobalan fruit Terminalia chebula Oak bark Oak wood Valonia oak Quercus macrolepis Sumac Tanner's sumach leaves - Rhus coriaria or Chinese gall on Rhus chinensis Tara pod Tara spinosa Other sourcesby organBarks General : Tanbark Acacias (most notably Acacia pycnantha and Acacia decurrens) Alder Alnus sp Avaram Senna auriculata Babul Acacia nilotica Birch Betula sp Button mangrove Conocarpus erectus Hemlock Tsuga sp Larch Larix sp Mangrove Pine Pinus sp Spruce Picea sp Urunday Myracrodruon urundeuva Willow Salix caprea Leaves Badan Bergenia crassifolia Gambier Uncaria gambir Redoul Coriaria myrtifolia Roots Canaigre Rumex hymenosepalus Garouille Quercus coccifera Sea lavender Limonium sp Woods Cutch Senegalia catechu Fruit Divi-divi pod Libidibia coriaria Sant pod Acacia nilotica Teri pod Moullava digyna Galls Gall oak Quercus lusitanica Quercus infectoria Whole plant Prosopis sp. bark and wood Prosopis humilis Prosopis nigra Tanoak Notholithocarpus Tizra heartwood and root Searsia pentaphylla Undetermined organ Anadenanthera colubrina (vilca)