This paper deals with records of 89 lichen species and 21 non-lichenised fungi growing on lichens or algae. This paper deals mainly with new species and rediscoveries compared to the first checklist of lichens (HEIBEL et al. 1999). New for Northrhine-Westphalia and Germany: Thelocarpon imperceptum, T. pallidum (later also found in Hesse), new for Northrhine-Westphalia: Absconditella pauxilla, Agonimia vouauxii, Arthonia muscigena, A. phaeophysciae, Bacidina saxenii, Cercidospora parva, Chaenotheca brachypoda, Collema undulatum, Corticifraga fuckelii, Endocarpon psorodeum, Epicladonia sandstedei, Epigloea grummannii, E. soleiformis, Halecania viridescens, Illosporium carneum, Lecidella flavosorediata, Leptogium imbricatum, Libertiella malmedyensis, Micarea myriocarpa, Nectriopsis indigens, Opegrapha demutata, Paranectria oropensis, Parmelia ernstiae, Placopsis lambii, Pronectria robergei, Psilolechia clavulifera, Psoroglaena stigonemoides, Psorotichia lutophila, Ramonia interjecta, Roselliniella microthelia, Staurothele rufa, Thelocarpon intermediellum, T. magnussonii, T. olivaceum, T. saxicola, T. superellum, Usnea substerilis, Vezdaea retigera, Xylographa parallela, rediscoveries: Absconditella trivialis, Bacidia trachona, Caloplaca cerina var. cerina, Cladonia polycarpoides, Cyphelium inquinans, Epilichen scabrosus, Leptogium biatorinum, L. teretiusculum, Mycocalicium subtile, Peltigera leucophlebia, Rinodina pityrea, Solorina spongiosa, Thrombium epigaeum. Until recently two species were lumped under the name Bacidina arnoldiana, B. arnoldiana and B. sulphurella, both have been sampled in NRW.