Black pyreno on Populus - Forum ASCOFrance

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Black pyreno on Populus

Juuso Äikäs, 29-04-2021 18:22

These were growing on a dead, standing Populus tremula today. Maybe not be entirely ripe, but I measured a few spores:

(14.1) 15 - 16.9 (17.3) × (4.3) 4.6 - 5 (5.2) µm
Q = (2.9) 3 - 3.5 (3.8) ; N = 7
Me = 15.7 × 4.8 µm ; Qe = 3.3

Any idea what this is?

Chris Yeates, 30-04-2021 00:12

Re : Black pyreno on Populus

Looks like classic Melanomma pulvis-pyrius. See: https://www.researchgate.net/figure/Melanomma-pulvis-pyrius-A-B-Ascomata-on-substrate-C-Ascoma-in-longitudinal-section_fig3_318410099

Best wishes

Chris

Juuso Äikäs, 30-04-2021 00:30

Re : Black pyreno on Populus

Yes -- that seems to fit well. Apparently quite a common species. Thanks!

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