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Graphis mucronata
Small pale greyish-white plaques (photobiont) were seen on moist thick bark of a eucalypt. Each of these plaques had a scribbly lead-grey pattern. These long, branched reproductive parts are the apothecia.
Spotted on a eucalypt growing along the coast - Bass Strait/ Snowy River estuary.
A large amount of Calcium Oxalate crystals is responsible for the grey colour of the photobiont in this lichen.
The branched apothecia are called Lirellae, a characteristic of this type of lichen.
Family: Graphidaceae
https://www.anbg.gov.au/lichen/photos-ca...
Spotted on May 17, 2017
Submitted on May 21, 2017
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