BLS map
Protoblastenia rupestris Psoraceae

Protoblastenia rupestris

Growth type crustose
Chemical results: Apothecia K+ crimson
An important indicator species of calcareous substrataand common on mortar, limestone, cement and concrete.

The grey, greyish-brown or green-grey thallus can be either scurfy, cracked or +/- absent. The dull-orange apothecia are not in pits and become +/- convex and distorted. Ascus 8-spored with ellipsoid spores, 8-17 x 5-8 µm.

Similar: Protoblastenia calva, P. incrustans and P. lilacina


Protoblastenia rupestris

Protoblastenia rupestris

Protoblastenia rupestris
Protoblastenia rupestris
On concrete, Dorset. February 2014

All images used are copyright. Please contact me if you find errors.