[in Dutch with English abstract: ] A day trip to Paterswolde, a village in the very north of the province of Drenthe, once again demonstrated the exceptional importance of veteran trees for epiphytic diversity. In total about 80 species were recorded from veteran trees. Especially oak (Quercus robur) is exceptionally rich in coniocarpous ‘rain shadow specialists’ (Caliciaceae), among which six members of the genus Chaenotheca and the four currently known Dutch Calicium species: C. adspersum, C. glaucellum, C. salicinum and C. viride. Calicium adspersum and Chaenotheca phaeocephala were found for the second time in The Netherlands. Former great rarities such as Arthonia didyma, A. ruana and especially Normandina pulchella are rather common these days. Also the newcomers Coniocarpon cinnabarinum and Porina byssophila appear to be rapidly spreading.