Opeg verm4215e.jpg

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Opegrapha vermicellifera, an extensive colony growing on the base of a shaded Fraxinus trunk, VC 29 (Cambridgeshire). Lecanactis abietina is superficially similar; it has slightly larger pycnidia and tends to grow on more acidic bark.

Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith