Explanatory notes
… ), ash ( Fraxinus spp. ), beech ( Fagus spp. ), birch ( Betula spp. ), cherry ( Prunus spp. ), chestnut ( Castanea spp. ), elm ( Ulmus spp. ), eucalyptus ( Eucalyptus spp. ), hickory ( Carya spp. ), … and aspen ( Populus spp. ), robinia ( Robinia spp. ), tulipwood ( Liriodendron spp. ) or walnut ( Juglans spp. ) …