Situation of lichens of aquatic and transient habitats in Eastern and East-Central European lowlands is discussed basing on example of several selected species: Leptogium biatorinum. Sarcosagium campestre. Steinia geophana. Verrucaria aquatilis. https://www.bekindtopets.com/great-pick-Obsidian-ULU-w-Eagle-clearance/