Note sur la présence d'Asplenium fontanum et A. foreziense (Aspleniaceae) en Belgique

A note on the presence of Asplenium fontanum and A. foreziense (Aspleniaceae) in Belgium. – Historical herbarium collections of these two species from Belgium, more precisely from Saint-Denis (prov. Hainaut), were critically revised. Although it was generally admitted that only the latter had been reliably collected in the past, it is suggested that probably both species were formerly present in that locality.