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06-04-2026 15:04

David Chapados David Chapados

Hi! Could someone help me identifying this specim

29-06-2016 15:18

Per Vetlesen

HiIt was found on the bark of a dead branch of Jun

07-01-2018 22:47

Per Vetlesen

Grown in moist chamber on bark/resin of fallen Pin

06-04-2026 21:36

Viktorie Halasu Viktorie Halasu

Hello, could anyone please send me the article wi

06-04-2026 19:40

David Gibbs David Gibbs

Help with this one much appreciated, on rotting Fa

06-04-2026 11:07

Louis DENY

Bonjour forum, Trouvé sur bois de feuillu très d

06-04-2026 16:24

Juuso Äikäs

Last Tuesday I found some tiny white Helotiales gr

05-04-2026 13:33

Sylvie Le Goff

Bonjour à tousPuis avoir votre avis sur ce champi

05-04-2026 20:40

Robin Isaksson Robin Isaksson

Hi!Found i Japan on bark of Abies sp. Spores 35-4

06-04-2026 08:15

Lothar Krieglsteiner Lothar Krieglsteiner

some days ago, on the lower surface of leaf of Que

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Orange, dark-stipitate apothecia on alga-covered wood in flood zone
Edvin Johannesen, 09-02-2023 16:29
Edvin JohannesenThese apothecia were found in cracks on a mossy log with algal growth in a frequently flooded area. The underside is pretty dark, as are the rather short stems. The ectal excipulum consists of intertwined brown hyphae with cylindrical algal cells imbedded. The lower side of the excipulum is almost covered in algae. It almost appears that the fungus is lichenized, but I guess that is an illusion.
I am still trying to figure out vital taxonomy/microscopy. The images below are from material which has been dry for months, mounted in water (except for the IKI one, in Lugol). I hypothesize that we see living spores inside (and outside) dead asci, but I'm not sure. The spores measure approx. 5-6 x 15-17.5 micr.  Asci 90-100 x 7.5-10 micr. Spores contain a few large and sereval small guttules. Paraphyses are a bit difficult to interpret clearly - some seem filiform, some thicker and acuminate, some brownish with granular content. I assume they are dead? I have not seen croziers. The ascus pore stains blue in Lugol (no pre-treatment)

I have been thinking Phaeohelotium, but I am not sure how that genus is cureently to be understood. I don't see a distinct layer with rounded cells in the excipulum.

Any suggestions are welcome.  Thanks.
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Edvin Johannesen, 09-02-2023 16:30
Edvin Johannesen
Re : Orange, dark-stipitate apothecia on alga-covered wood in flood zone
Some more images.
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Edvin Johannesen, 09-02-2023 16:33
Edvin Johannesen
Re : Orange, dark-stipitate apothecia on alga-covered wood in flood zone
Forgot to mention that the spores eventually become 1-septate, as you can see in one of the images.
Hans-Otto Baral, 09-02-2023 17:13
Hans-Otto Baral
Re : Orange, dark-stipitate apothecia on alga-covered wood in flood zone
To me this looks a bit senescent. I more think of a Hymenoscyphus, H. calyculus perhaps. That should have croziers, however.
Edvin Johannesen, 09-02-2023 23:03
Edvin Johannesen
Re : Orange, dark-stipitate apothecia on alga-covered wood in flood zone
OK, I will check. Thanks a lot.