Distribution map of Acer opalus (Italian maple)Subspecies:

     Acer opalus subsp. opalus
     Acer opalus subsp. obtusatum (syn. Acer obtusatum)
Caudullo, G., Welk, E., San-Miguel-Ayanz, J., 2017. Chorological maps for the main European woody species. Data in Brief 12, 662-666. DOI: 10.1016/j.dib.2017.05.007
Data: https://doi.org/10.6084/m9.figshare.24550966
References:

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Giovanni Caudullo