Ramalinaceae Bacidia egenula Growth type crustose Chemistry: Upper exciple K +/- purple-red, epithecium K-, N+ red-violet Usually on shaded calcareous rocks, sandstone and bricks, rare on bark and fence posts. BLS conservation evaluation: LC NS Finely granular yellow-green or pale brown thallus, flat grey, brown or black apothecia with bluish-green epithecium and brown upper hypothecium. The spores are 3(-7) septate, 25-40(-45) × 1.5-2(-2.5) µm. Pycnidia are rare, +/- immersed. Microscope photographs below.

Microscope photographs




Bacidia egenula
Studland Heath, Dorset. March 2015