Pyrenopeziza on Filipendula ulmaria

04-07-2021 11:38

Knapp, Schweiz. Z. Pilzk (1924)

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Coating on the bark.

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Pyrenopeziza on Filipendula ulmaria

Juuso Äikäs, 09-06-2022 14:41

I've seen this fungus many times before, and it seems to be quite common and plentiful on dead stems of Filipendula ulmaria. This is a finding from yesterday, found near shoreline.

Spores slightly clavate, measuring 8.9 - 9.9 × 2.1 - 2.5 µm, OCI = 1.

The asci measure 42.3 - 56.5 × 6.6 - 7.3 µm, with croziers, IKI+(bb).

Paraphyses +- cylindrical, some a bit swollen. No hairs.

I assume this is a Pyrenopeziza, and maybe someone knows the species?

Enrique Rubio, 09-06-2022 14:48

Re : Pyrenopeziza on Filipendula ulmaria

Hi Juuso
Maybe Pyrenopeziza pulveracea.
Enrique

Juuso Äikäs, 09-06-2022 15:50

Re : Pyrenopeziza on Filipendula ulmaria

Thanks Enrique, this seems like a good suggestion! The substrate, appearance and microscopy all seem to fit.

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