Tag 'species = Populus tremula'

Value histogram for key 'start_date'

• 3: 1980
• 2: 1960
• 1: 1976
• 1: 1975
• 1: 1951
• 1: 1984
• 1: 2004
• 1: 1970
• 1: 1979
• 1: 1977