Degelia plumbea (also called blue felt lichen)[4] is a species of grey to blue-black or brown
folioselichen in the genus Degelia.[5] It mostly grows on trees in undisturbed woodlands but occasionally on coastal rocks.[5][6] It is found widely in Britain and western Ireland as well as in America and Canada, as it grows in
maritimeAtlantic climates.[5][7][8]
D. plumbea is highly sensitive to
acid rain and climatic changes. D. plumbea and other lichen are highly sensitive to high light and have a high-water holding capacity. Other factors like method of dispersal and obtaining the appropriate substrate effects the growth and prosperity of the fungi. The genes in the D. plumbea don’t share a common ancestral gene through speciation due to potential environmental changes.[9][10][11]