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Black with a mycelium.
Per Marstad,
27-02-2019 11:16
I have found this in Norway, on Fraxinus excelsior, growing on a bed of mycelium.Spores 27-28 x 6-8 my, with 3 segments.
I would like to have a name.
Per.
Lothar Krieglsteiner,
27-02-2019 11:28
Re : Black with a mycelium.
Hello Per,
macroscopically this looks much like Chaetosphaerella phaeostroma.
The single spore (is it an ascospore?) could fit, too (but are a bit short) - 3 septa, end cells hyaline.
Best regards, Lothar
Per Marstad,
27-02-2019 11:44
Re : Black with a mycelium.
In the description in Fungi and Lichens of Great Britain and Ireland tha size of the ascospore is (22-) 31-36 x 6-9 my and the form is exactly like my picture, so your determination is right, I think. Thank you.
Per.
Per.