Millstone Grit Lichen

Millstone Grit Lichen

Observation - Millstone Grit Lichen - UK and Ireland. Description: Warty, light grey areolate crustose thallus. Dark prothallus just visible top left and along the top of the pictures. Large black lecideine apothecia (fingertip for scale). Some of the apothecia look lumpy and distorted. Growing on siliceous rock,mill

Warty, light grey areolate crustose thallus. Dark prothallus just visible top left and along the top of the pictures. Large black lecideine apothecia (fingertip for scale). Some of the apothecia look lumpy and distorted. Growing on siliceous rock,millstone grit erratic, near limestone path. Possibly Porpidia macrocarpa.