Lichen 2f

Lichen 2f

Observation - Lichen 2f. Description: White-grey, crustose lichen growing on siliceous sandstone. White prothallus. Growth rings visible near edges of rosettes (clearer on thumbnail sized image). Lumpy surface with lecanorine apothecia. Discs white-grey with powdery appearance. Possibly Ochr

White-grey, crustose lichen growing on siliceous sandstone. White prothallus. Growth rings visible near edges of rosettes (clearer on thumbnail sized image). Lumpy surface with lecanorine apothecia. Discs white-grey with powdery appearance. Possibly Ochrolechia parella.