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Oak tree Quercus robur in full leaf. Illustration from The Hidden Universe: Adventures in Biodiversity by Alexandre Antonelli

Yew Taxus baccata sprig and detail of lone berry

Woolly willow Salix lanata sprig with catkins and small image of the tree shape

Wych elm Ulmus glabra with fruit, flower, and leaves on twig

Wild service tree Sorbus torminalis with white flowers and an autumn leaf with fruit

Willow Salix sprig with catkin

Tulepo Nyssa ogoche sprig showing fruit, flowers, and a close up of one flower

Sycamore Acer pseudoplatanus leaves with winged fruit amd flowers

Diagram of schematic tree, very simplified colour wash over pen and ink showing how the root system is as large as the tree above ground

Silver Birch Betula pendula tree shape without leaves, close up of bark, and sprig with leaves and catkins

Snowball tree Viburnum opulus sterile with detail of individual flowers

Silver birch Betula pendula pen and ink tree shape without leaves

Silver Birch Betula pendula twig with buds and catkins and leaf

Rowan Sorbus aucuparia tree sapling tree without leaves, in pen and ink

Rowan Sorbus aucuparia tree ink drawing without leaves

Rowan Sorbus aucuparia sprig of leaves, clutch of orange berries and white flowers

Scots pine Pinus sylvestris trees in pen and ink from young dapling to mature adult tree

Scots pine Pinus sylvestris tuft with mature cone and green cones

Silver birch Betula pendula bark study with a small layer of bark curling off the tree

Oak bark Quercus robur study

Oak Quercus robur pen and ink tree shape without leaves

Larch Larix decidua sprig with mature cone and young flower detail

Lawson’s Cypress Chamaecyparis lawsoniana pen and ink drawing of a mature tree

Lime Tilia europaea bark study