Photo-graphic leaf-key
Below is the Photo-graphic leaf-key. It has photos with a number of leafs with the names. If your leaf is not present here go to the logical leaf key. If you still don't succeed there this site has failed for you. Or have you not yet tried the elimination key?
Walnut or Juglans regia
Apple or Malus sylvestris
Cherry with red leafs or Prunus cerasifera 'Nigra'
Golden elm or Ulmus hollandica (x) 'Wredei
Ash genus or Fraxinus (Oleaceae or Olivefamily)
European Beech or Fagus sylvatica
Pea-family or Leguminosa or Fabaceae
Oak genus or Quercus (Fagaceae or Beechfamily)
Planetree genus or Platanus (Platanaceae)
Maple genus or Acer (Aceraceae or Maple family)
Birchgenus or Betula (Betulaceae or Birchfamily)
Lindengenus or Tilia (Tiliaceae or Lindenfamily)
Hornbeam or Carpinus betulus
Hornbeam or Carpinus betulus (NOT BEECH!)
Pea-family or Leguminosa or Fabaceae
Oak genus or Quercus (Fagaceae of Beukenfamilie)Katsura tree or cercidiphyllum japonicum
Hornbeam or Carpinus betulus (NOT BEECH!)
Dawn redwood or Metasequoia glyptostroboides (Taxodiaceae)
Hornbeam or Carpinus betulus (NOT BEECH!)
Poplar-genus or Populus (Salicaceae or Willowfamily)
Willow genus or Salix (Salicaceae or Willow family)
Pea-family or Leguminosa or Fabaceae (Black locust)Planetree genus or Platanus (Platanaceae)
Cherry or prunus-genus or Prunus (Rosaceae of Rosefamily)
Catalpa or Catalpa bignonioides
Kiwi or Actinidia deliciosa.
Horse chestnut or Aesculus hippocastanum
Red horse chestnut or Aesculus x carnea = A. hippocastanum x pavia
Poplar genus or Populus (Salicaceae of Willowfamily)
Pea-family or Leguminosa or Fabaceae (Black and Honeylocust)
Turkish filbert or Corylus colurna.
Maple-genus or Acer (Aceraceae of Maple-family)
Cherry or prunus-genus or Prunus (Rosaceae of Rosefamily)
Planetree genus or Platanus (Platanaceae)
Catalpa bignonioides
Maple-genus or Acer (Aceraceae of Maple-family)
Here compound leafs that look alike:Pea-family or Leguminosa or Fabaceae (Black locust and Honeylocust and Japanese scholartree)
Ash-genus or Fraxinus (Oleaceae or Olivefamily)
More compound leafs that look like these are, first two bushes: European mountainash or Sorbus aucuparia (Rosaceae) and Black elderberry or Sambucus nigra (Caprifoliaceae). Trees with such leafs are: Caucasian wingnut or Pterocarya fraxinifolia and the Walnut or Juglans regia and Boxelder or Acer negundo, St. John's Bread Carob or Ceratonia siliqua, Kentucky coffeetree or Gymnocladus dioicus, Mimosa / Silver wattle or Acacia dealbata, Heaven tree or Ailanthus altissima