A review by andrewspink
Flora van België, het Groothertogdom Luxemburg, Noord-Frankrijk en de aangrenzende gebieden : (Pteridofyten en Spermatofyten) by Filip Verloove, Fabienne van Rossum

Did not finish book. Stopped at 9%.

This is a reference book, not for reading every page.
An excellent flora. I tried several of they keya and they worked fine, mostly with usable characteristics. Nice that it includes surrounding areas like the Eifel, as well as Belgium.