Was quadrantenbasierte Punktverbreitungskarten (konkret: in der Toskana) betrifft, meint er:
Friuli-Venezia Giulia - http://www.librinlinea.it/titolo/nuovo- ... CFI0535601Unfortunately, distribution maps in quadrants are only available (in book form) for the floras of individual administrative regions. NE Italy + Latium are fully covered, below are links to the main books (none of which is freely available online).
The project Wikiplantbase has started only recently: it aims at georeferencing occurrence data (from literature and herbarium specimens) throughout Italy, but up to now it was implemented only for some regions, Tuscany being one of them. You find a link to the distribution maps in the taxon pages of the Portal to the Flora of Italy, which is available online (with updates every 6 months) at: http://dryades.units.it/floritaly/
Trieste and Gorizia Karst - http://www.edizionigoliardiche.it/books/353
Veneto - https://www.ibs.it/flora-del-veneto-lib ... 8883149986
Trentino Alto-Adige - https://www.libreriauniversitaria.it/fl ... 8874982974
Lombardia (Eastern Part) - https://www.hoepli.it/libro/flora-vasco ... 02934.html
Emilia-Romagna (protected plants only) - https://geoportale.regione.emilia-romag ... 8659823.74 ;
Latium - https://www.parchilazio.it/schede-1835- ... _del_lazio ;