Protoblastenia rupestris

Found in my local churchyard this lichen is easily identified as Protoblastenia by the apothecia and the K+ crimson reaction to the apothecia. Spores measured up to 10x7.5µm
Identification made by apothecia only up to .5mm, K+ crimson reaction and the spores elipsoid rather than globose.

Protoblastenia rupestris section showing K+ reaction

Protoblastenia rupestris spores

Protoblastenia rupestris