A leprose species that consists of a glaucous green, leprose-granular crust from which, over time, secondary pseudocyphellae develop that are whitish, frequently branches towards the tips, and that are densely covered in pale, bluish green, leprose granules.
Thallus: C-, K-, UV-
In Scotland, Leprocaulon microscopicum has a scattered, more or less coastal distribution where it grows on thin soil and in crevices on cliffs and walls. BLS distribution map
scottishlichens.co.uk 