Opegrapha rupestris Roccellaceae
Opegrapha rupestris #

Chemistry negative. Exciple K+ brown-red in section

Lichenicolous on crustose Verrucariaceae on natural limestone rocks and memorials, especially Bagliettoa baldensis (Verrucaria baldensis)
BLS conservation evaluation: LC NS

Scattered clusters of small lirellae, +/- rounded with a persistently narrow central slit. Spores are 3-septate, 14-22 5-8 m.
Microscope photographs below.

Similar: Opegrapha parasitica is parasitic on Aspicilia calcarea,
Opegrapha pertusariicola on Pertusaria leioplaca and
Opegrapha physciaria on Xanthoria parietina


Opegrapha rupestris

Opegrapha rupestris

Opegrapha rupestris

Opegrapha rupestris

Microscope photographs
Opegrapha rupestris, spores

Opegrapha rupestris, spores
Opegrapha rupestris
Arne, Kimmeridge and Branksome Park, Dorset. February and March 2014, February 2017

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