Rhytisma acerinum IMI0039

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Rhytisma acerinum, fully hydrated ascomata with upper wall pushed away to reveal the hymenium. From overwintered leaf of Acer pseudoplatanus, Surrey, England.

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