Lichenen van een specialistische lichenen excursie naar Utrecht

A short lichenological excursion was held on september 9th 1989 to the eastern part of the province Utrecht. Special emphasis was laid on corticolous crustaceous species. The list gives a good representation of the rather rich flora still present. Three species are not mentioned in the Dutch checklist, for various reasons. Some specimens have been identified by Dr. B.C. Coppins, for wich we are thankful.