cortex
Lawson’s Cypress Chamaecyparis lawsoniana
Horse Chestnut Aesculus hippocastanum
Horse Chestnut Aesculus hippocastanum twig and conker
Hazel Corylus avellana tree
Hazel Corylus avellana twig and leaf
Hazel Corylus avellana
Hawthorn Crataegus monogyna
Grey willow Salix cinerea
Elm Ulmus minor
Elder Sambuccus nigra
Crab Apple Malus sylvestris
Crack willow Salix fragilis
Date Palm Phoenix dactylifera
Common Alder Alnus glutinosa
Common Alder Alnus glutinosa roots
Common Alder Alnus glutinosa Cones and catkins
Cedar of Lebanon Cedrus libani
Black poplar Populus nigra leaf flower and catkins
Beech Fagus sylvatica twig and leaf
Beech Fagus sylvatica
Beech bark study Fagus sylvatica
Pollarded Alder Alnusglutinosa
Ash Fraxinus excelsior twig and leaf
Ash Fraxinus excelsior