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25-02-2023 18:36

Elisabeth Stöckli

Bonsoir, Trouvé sur un tronc de Salix recouvert

05-07-2025 12:38

Åge Oterhals

I found this pyrenomycetous fungi in pine forest o

01-06-2025 09:37

Charles Aron Charles Aron

Hi All, I found this Octospora growing with liver

06-07-2025 19:36

Castillo Joseba Castillo Joseba

me mandan el material de Galicia (España) recolec

07-07-2025 19:22

David Chapados David Chapados

Hi,Does anyone know what could this anamorph be?ht

02-07-2025 18:45

Elisabeth Stöckli

Bonsoir,Sur feuilles d'Osmunda regalis (Saulaie),

04-07-2025 20:12

Josep Torres Josep Torres

Hello.A fungus growing on the surface of a trunk o

20-06-2025 08:33

Josep Torres Josep Torres

Hello.Small, blackish, mucronated surface grains s

28-06-2025 16:00

Josep Torres Josep Torres

Hello.A tiny fungus shaped like globose black grai

04-07-2025 12:43

Castillo Joseba Castillo Joseba

me mandan el material seco de Galicia (España) 

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Phaeohelotium
Zuzana Sochorová (Egertová), 26-08-2024 16:30
Zuzana Sochorová (Egertová)Hello,
yesterday I collected this Phaeohelotium on a decaying trunk of Fagus sylvatica (in the field I though it would be Bisporella/Calycina). The apothecia measured up to 7 mm, but mostly up to 4 mm, were vivid yellow, not reddening.
Ascospores (13.9)15.4-18.2(19.7) × (4.1)4.2 4.7(4.8) µm, Q = (3.1)3.5-4.2(4.6), n = 40, 
Me = 16.9 × 4.4 µm, Qe = 3.8. Most of them were non-septate, some 1-septate, a few 2-septate and a single 3-septate ascospore was observed. 
Asci bb (Hymenoscyphus-type), with croziers. 124-135 x 8-11 µm.
Ectal excipulum textura globulosa-angularis, medulla t. intricata.
Using Bernard´s key I came to Phaeohelotium monticola, but still feel a bit uncertain due to the possible confusion with P. epiphyllum. Based on the information in this forum and after comparing photos on reliable webpages, it seems P. epiphyllum should have less vivid colour, smaller guttules inside paraphyses and should become red when damaged. Nevertheless, I would like to consult this find. 
Zuzana
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Zuzana Sochorová (Egertová), 26-08-2024 16:33
Zuzana Sochorová (Egertová)
Re : Phaeohelotium
Asci and paraphyses
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Zuzana Sochorová (Egertová), 26-08-2024 16:35
Zuzana Sochorová (Egertová)
Re : Phaeohelotium
Excipulum
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Hans-Otto Baral, 26-08-2024 21:08
Hans-Otto Baral
Re : Phaeohelotium
Hi Zuzana

first I see from your living asci that the spores are always non-septate before discharge.

The number of septate spores is a pure function of the degree of senescence. Finally they should get brownish, but I saw such spores only rarely in this species.

Xes, it is P. monticola, no doubt. Such elongated VBs are impossible in H. epiphyllus which has only small roundish VBs in high number. The same applies to the cortical cells.

THT IKI-reaction of the VBs is perhaps also typical.

In fact, P. epiphyllum can hardly be confused with Calycina citrina.

Zotto
Zuzana Sochorová (Egertová), 27-08-2024 06:27
Zuzana Sochorová (Egertová)
Re : Phaeohelotium
Hi Zotto,
perfect, thank you very much!
I can confirm the oldest spores were light brownish.
Zuzana