[[Fasciculus:Valdarno_superiore.JPG|350px|thumb|Despectus in Vallem Arnonicam Superiorem e [[Pratum Magnum|Prato Magno]]]]
'''Vallis ArnonicaArni'''<ref>[https://books.google.it/books?id=61ZfAAAAcAAJ&pg=PA138&lpg=PA138&dq=%22Vallis+Arni%22+Tuscia&source=bl&ots=gGsyZ9fkdh&sig=Q8T47BBeySImsJbNuJTEiTL18BQ&hl=it&sa=X&ved=0ahUKEwia4OOxr-HNAhVBXhoKHYuvC-sQ6AEIMTAD#v=onepage&q=%22Vallis%20Arni%22%20Tuscia&f=false ]</ref><ref>[Neologismus|Toponimumhttps://books.google.it/books?id=uz4G7jqASWIC&pg=PA138&lpg=PA138&dq=%22Vallis+Arni%22+Tuscia&source=bl&ots=afBHs_E0tJ&sig=VB4HUsKu3ztV-c180SfQAwtJtsM&hl=it&sa=X&ved=0ahUKEwia4OOxr-HNAhVBXhoKHYuvC-sQ6AEINDAE#v=onepage&q=%22Vallis%20Arni%22%20Tuscia&f=false novatum]</ref><ref>[https://books.google.it/books?id=kjdZTAzN5ukC&pg=PA54&lpg=PA54&dq=%22Vallis+Arni%22+Tuscia&source=bl&ots=KLRD3_0jsm&sig=dV_vskqBDUl4Ph4SN7zHhVhEGCc&hl=it&sa=X&ved=0ahUKEwia4OOxr-HNAhVBXhoKHYuvC-sQ6AEINjAF#v=onepage&q=%22Vallis%20Arni%22%20Tuscia&f=false ]</ref><ref>[https://books.google.it/books?id=s3E5Hx2mE6kC&pg=PA575&lpg=PA575&dq=%22Vallis+Arni%22+Tuscia&source=bl&ots=dmwKsMq_hZ&sig=0_uobV3s0WbrjmpavyZ0hwlB09Y&hl=it&sa=X&ved=0ahUKEwia4OOxr-HNAhVBXhoKHYuvC-sQ6AEIQTAI#v=onepage&q=%22Vallis%20Arni%22%20Tuscia&f=false ]</ref> seu '''Vallis ArniArnonica'''<ref>[[Neologismus|Toponimum novatum]]</ref> ([[Lingua Italiana|Italiane]]: ''[[:it:Valdarno|Valdarno]]'') est vallis [[Italia]]e, in [[Regio Italiae|Regione]] [[Tuscia]] sita. ''Vallis Arni'' omnes vallis flumis [[Arnus|Arni]] non est, quoniam pars prima, a [[Mons Falteronae|Mons Falteronis]] usque ad urbem [[Arretium|Arretii]], [[Clusentinus]] nomen habet.
