White lichen with pruinose apothecia

White lichen with pruinose apothecia

Observation - White lichen with pruinose apothecia - UK and Ireland. Description: White placodioid thallus with flat-topped lobes growing on limestone on south wall of church. Middle of thallus cracked. Dark, pruinose apothecia near centre of thallus. Possibly Solenopsora candicans. Update in light of Synangium's comment below: Calop

White placodioid thallus with flat-topped lobes growing on limestone on south wall of church. Middle of thallus cracked. Dark, pruinose apothecia near centre of thallus. Possibly Solenopsora candicans.
Update in light of Synangium's comment below: Caloplaca teicholyta with apothecia of parasitic Diplotomma sp.