Jeroen Willemsen lives south of Rotterdam in The Netherlands. He is a photographer of European wild plant species. Reports of his trips to European plant destinations are published on his website WWW.BOTANICALJOURNEYS.COM [1]. Jeroen is also interested in research on mammals (mainly bats and mice) and he studies marine flora and fauna. Jeroen has written a thesis about the foundation of national botanical associations in the Netherlands and Belgium in the nineteenth-century.