Contribution to the knowledge of some poorly known lichens in Poland. I. The genus Absconditella
Data on the poorly known lichen genus Absconditella in Poland are presented. A. pauxilla is reported as new to the country. New collections of the rare in Central Europe A. delutula and A. sphagnorum are provided. Additionally, new records of the very much overlooked A. lignicola are presented from many regions of Poland. Taxonomic remarks, known world distribution and habitat preferences for the species are included.