Observation 179122: Opegrapha vulgata Ach.

Notes:
on lower side of leaning Nyssa sylvatica; open mixed forest at edge of marsh; trail to sound

thallus just a whitish stain, algae trentepohlia, apothecia lirellate black, exciple fully-carbonized, spores ~12×3um hyaline 3-septate 8 per ascus; pycnidia black globose semi-immersed, conidia curved to curly ~10um

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