Organism that occurs as crusty patches on tree trunks or bare ground

Let's find possible answers to "Organism that occurs as crusty patches on tree trunks or bare ground" crossword clue. First of all, we will look for a few extra hints for this entry: Organism that occurs as crusty patches on tree trunks or bare ground. Finally, we will solve this crossword puzzle clue and get the correct word. We have 1 possible solution for this clue in our database.