"species"=>"fagus sylvatica","leaf_type"=>"broadleaved","species:nl"=>"bruine beuk","start_date"=>"1865","circumference"=>"4.55"
"species"=>"platanus hispanica","leaf_type"=>"broadleaved","species:nl"=>"gewone plataan","start_date"=>"1825","circumference"=>"4.50"