Iron stained crustose lichen

Iron stained crustose lichen

Observation - Iron stained crustose lichen. Description: Patches of crustose lichen with grey areolate thallus growing on siliceous rock. Red-brown iron staining in places. Black lecideine apothecia. Possibly Lecidea lithophila.

Patches of crustose lichen with grey areolate thallus growing on siliceous rock. Red-brown iron staining in places. Black lecideine apothecia. Possibly Lecidea lithophila.