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07-02-2023 14:52

Alex Akulov Alex Akulov

Dear forumPlease help me with the identification o

08-02-2023 09:49

Lothar Krieglsteiner Lothar Krieglsteiner

... of decideous tree in the Algarve (Portugal), y

07-02-2023 22:28

Ethan Crenson

Hello friends, On Sunday, in the southern part of

08-02-2023 09:41

Lothar Krieglsteiner Lothar Krieglsteiner

This pretty small  fungus I found on decaying rem

06-02-2023 17:38

Jan Eckstein

Dear forum, can someone help with this nice littl

06-02-2023 13:16

Miguel Ãngel Ribes Miguel Ángel Ribes

Buenos días Este Coprotus sobre heces de conejo,

05-02-2023 18:38

Marja Pennanen

Hello forum, I collected these tiny, dark discs o

31-01-2023 13:50

Dragiša Savic

Regards to allAn unusual finding, especially for m

05-02-2023 05:02

Ethan Crenson

Hello all, On a recent visit to the Bahamas I cam

05-02-2023 00:33

Lothar Krieglsteiner Lothar Krieglsteiner

.. Algarve, Foia near Monchique, on wood of (?) Ca

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? Thyronectria sp.
Alex Akulov, 07-02-2023 14:52
Alex AkulovDear forum
Please help me with the identification of nectrioid fungus with muriform ascospores.

Perithecia are orange-red, cupulate when dry, grouped above the stromata of unknown sterile Pyrenomycete on the dead branches of Aesculus hyppocastanum. Yellow pigment is released after preparation in KOH. Paraphyses are absent, asci in a bundles. Asci 8-sporous, uniseriate, 129-138 ? (9,5) – 12,2 – 12,4,  with a short mostly absent stipes. Ascospores hyaline, muriform when mature, 15,6-23,5 x 5,8-7,6.

My guess is that this is something close to Thyronectria. Maybe you will have other ideas.

Grateful before,
Alex
  • message #75123
  • message #75123
Andgelo Mombert, 09-02-2023 14:43
Andgelo Mombert
Re : ? Thyronectria sp.
Dear Alex,

Yes I am also thinking of a Thyronectria. I don't see anything that matches. Possibly an undescribed species! You can send this to Hermann Voglmayr.

thank you for the info. it makes me want to look for it on the Aesculus at home.
Best wishes