"wikidata"=>"Q26899","leaf_type"=>"broadleaved","leaf_cycle"=>"deciduous"
"species"=>"Quercus robur","leaf_type"=>"broadleaved","leaf_cycle"=>"deciduous","diameter_crown"=>"22"
"species"=>"Quercus robur","diameter"=>"1250","leaf_type"=>"broadleaved","denotation"=>"natural_monument","leaf_cycle"=>"deciduous","start_date"=>"1850","source:date"=>"2017-12","ref:ghbbl2017"=>"MO 09","diameter_crown"=>"25"