Abstract: Lentinus lepideus is common on Finnish railway sleepers made of pine wood. Of the 280 railway stations studied, its fruit bodies were observed at 156 stations, which were fairly evenly distributed over the railway net. There is some concentration on less used and poorly maintained lines. Railway age and station size have little influence. During the observation period of five years no yearly differences in the occurrence were noted. Fruit bodies emerge at the end of June, and their number remains almost constant up to September.