The autumn field meeting of 1996 was held on the Waddensea island Schiermonnikoog. 160 lichens and 2 lichenicolous fungi are reported. Arthopyrenia fraxini Massal. and Xanthoriicola physciae (Kalchbr.) D.Hawksw. are mentioned for the first time from the Netherlands. Also the weakly or not lichenized species Exarmidium hemisphericum (Fries) Aptroot and Kirschsteiniothelia maritima (Linder) D.Hawksw. are new for the Netherlands. Or. P. Diederich is thanked for the identification of lichenicolous fungi.