Buellia ocellata Physciaceae
Buellia ocellata

Growth type crustose
Chemical results: K-, C+ persistent orange, P-, UV-

Often forms mosaics with Buellia aethalea on exposed siliceous stonework, rocks and pebbles and on granite or sandstone headstones.

The small, areolate patches of green-grey or yellow-grey thallus are sometimes surrounded by a black prothallus. Immersed black apothecia, the epithecium brown to olive. Paraphyses with swollen dark tips, spores brown, 1-septate, (11-)13-17(-21) x 6.5-9(-11) Ám. Micro photographs below.

Photograph immediately below shows Buellia ocellata with B. aethalea, (chemistry: K-, C-, or K+/- yellow going red)


Buellia ocellata and Buellia aethalea


Buellia ocellata

Microscope photograph
Buellia ocellata


Buellia ocellata
Buellia ocellata
Studland churchyard, Dorset. February 2013. On fence, Pamphill Green, January 2016

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