Sci. data Sci. data The GenTree Dendroecological Collection, tree-ring and wood density data from seven tree species across Europe Martinez-Sancho E Slamova L Morganti S Grefen C Carvalho B Dauphin B Rellstab C Gugerli F Opgenoorth L Heer K Knutzen F von Arx G Valladares F Cavers S Fady B Alia R Aravanopoulos F Avanzi C Bagnoli F Barbas E Bastien C Benavides R Bernier F Bodineau G Bastias CC Charpentier JP Climent JM Correard M Courdier F Danusevicius D Farsakoglou AM del Barrio JMG Gilg O Gonzalez-Martinez SC Gray A Hartleitner C Hurel A Jouineau A Karkkainen K Kujala ST Labriola M Lascoux M Lefebvre M Lejeune V Liesebach M Malliarou E Mariotte N Matesanz S Myking T Notivol E Pakull B Piotti A Pringarbe M Pyhajarvi T Raffin A Ramirez-Valiente JA Ramskogler K Robledo-Arnuncio JJ Savolainen O Schueler S Semerikov V Spanu I Thevenet J Mette Tollefsrud M Turion N Veisse D Vendramin GG Villar M Westin J Fonti P 2020 research-article