Pruinose lichen in limestone wall

Pruinose lichen in limestone wall

Observation - Pruinose lichen in limestone wall. Description: Thallus of pruinose brown and grey squamules growing in limestone wall. Black lecideine apothecia. Proper margin visible in younger apothecia, less clear in older more convex apothecia. Possibly Toninia sedifolia.

Thallus of pruinose brown and grey squamules growing in limestone wall. Black lecideine apothecia. Proper margin visible in younger apothecia, less clear in older more convex apothecia. Possibly Toninia sedifolia.