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Deciduous trees, top: Black poplar (Populus nigra, or Populus pyramidalis), a-fruit catkins, b-staminate catkins, c+d-branches with leaves, e-staminate blossom, f-pistillate blossom; Silver birch (Betula pendula, or Betula verrucosa), a-flowering branch, b-staminate blossom, c-pistillate blossom, d-fruit (upper part), e-seed, f-carpel; White poplar (Populus alba), a-flowering branch, b-branch with leaves, c-fruit catkins, d-staminate blossom, e-open fruit capsule, f-hairy seed; Aspen (Populus tremula), a-staminate catkins, b-pistillate catkins, c-branch with leaves, d+e-pistillate blossom, f-capsule. Below: Walnut tree (Juglans regia), a-flowerin branch, b-blossom (enlarged), c-pistil (enlarged), d-fruit (walnut) cutted; European black alder (Alnus glutinosa), a-branch with leaves, b-pistillate blossoms, c-staminate blossoms, d-fruit cones, e-seed; Goat willow or goat sallow (Salix caprea), a-staminate catkins, b-a-staminate blossom (enlarged), c-pistillate catkins, d-pistillate blossom (enlarged), e-fruit (enlarged), f-flowering branch; White willow (Salix alba), a-branch with staminate blossoms, b-single staminate blossom (enlarged), c-branch with pistilate blossoms, d-single pistillate blossom (enlarged), e-fruit capsule (enlarged). Wood engravings, published in 1884.