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Order: Ostropales
Family: Graphidaceae
Species: Graphis scripta Very variable. Smooth or wrinkled white or grey thallus with curved or stellate apothecia. Centres of lirellae open, +/- white pruinose. Similar to G. elegans but carbonaceous margins are raised and unfurrowed. Asci 8-spored, spores 5-15 septate, 25-70 x 6-10 µm. Mature spores are colourless but may become brown when old. Microscope photographs below. Chemistry negative. Very common on smooth barked trees, branches and twigs. K-, P- One of the main species of the Graphidion lichen community found on smooth hazel stems. Sometimes parasitised by Stigmidium microspilum |
Microscope photographs
Graphis scripta. Co. Cork, SW Ireland. January 2010 and 2012