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05-05-2025 10:09

Nicolas Suberbielle Nicolas Suberbielle

Re-bonjour,Cet ascomycète trouvé et étudié par

10-05-2025 18:47

David Chapados David Chapados

Hi, Does anyone have an idea of what this could b

09-05-2025 16:01

Thomas Flammer

I found a black cushon which might eventually be 

09-05-2025 19:10

Enrique Rubio Enrique Rubio

Hi to everybody.This Orbilia (apos up to 0.5 mm),

02-05-2025 13:29

Isabelle Charissou

Bonjour, j'aimerais savoir s'il y a eu des public

06-05-2025 13:37

Thomas Flammer

Munk, Anders (1953). The System of the Pyrenomycet

08-05-2025 20:50

Andreas Jacob

Good evening, due to contstant drought I started

07-05-2025 18:29

Francois Guay Francois Guay

I found this small hyaline ascomycete on moist, de

08-05-2025 02:22

Francois Guay Francois Guay

I found this white, hairy ascomycete on the bark o

08-05-2025 18:32

Ethan Crenson

Hello all, I was looking at leaves of Yucca from

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bryophilous Helotiales IKI rr
Andreas Gminder, 01-02-2025 20:32
Andreas GminderHello,
today my girlfriend Sylvie found a single apothecium of an obviousely bryophilous inoperculate ascomycete on bare soil between some cushion of Dicranum spec.
The apothecium is turbinate, slightly orange-salmon coloured, appr. 0,5 mm in diam.. The attached foto here is not the original growth place, but the apothecium was placed in this cushion of Dicranum. Nevertheless the only moss nearby was just this one.
Most striking microscopical feature is the Ascus pore reacting red with IKI.

Exc. of textura prismatica +/- parallel to surface.
Spores 1-14 x 3,5-4 µm, with oil guttules, appr. content 1,5-2.
Asci 90-110 x 8-9 µm (dead state), with croziers. Ascus pore strongly enlarged in dead state, IKI rr.
Paraphyses with some diffuse internal content, non-refractive, cylindrical, 1-1,5 µm broad, tips slighetly bent and up to 2 µm broad, branched.

Any hints?

thank you and all the best,
Andreas and Sylvie
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Hans-Otto Baral, 01-02-2025 21:23
Hans-Otto Baral
Re : bryophilous Helotiales IKI rr
Hallo Andreas

die Sporen sind ?11-14 µm lang?

Die Asci und Sporen sind etwas zu lang für Luteodiscus hemiamyloideus, der auch nicht an Laubmoosen vorkommt.

Das Apo war ja auch vital rosa-orange, offenbar ohne äußeren Einfluss.

B. turbinatus hat keine Haken.

Ein echter Bryoscyphus ist wegen der fehlenden VBs ausgeschlossen.

Hab keine Ahnung.

Zotto
Andreas Gminder, 01-02-2025 21:33
Andreas Gminder
Re : bryophilous Helotiales IKI rr
Hello Zotto,
not exactly the answer I hoped for, but nevertheless thank you for your opinion.
The spores are 11-14 µm long, not 1-14 µm of course.
What concerns the colour of the apothecium: We only had this one and as there is freezing temperatures in the night I don't know for sure whether this is the true colour. But as there are no vacuoles, it should not be a reddening species at least.
all the best,
Andreas
Hans-Otto Baral, 01-02-2025 21:45
Hans-Otto Baral
Re : bryophilous Helotiales IKI rr
Yes, the parahyses and excipular cells look alive, so there is no reason for a colour change.
Andreas Gminder, 08-02-2025 16:13
Andreas Gminder
Re : bryophilous Helotiales IKI rr
Hello,

we solved the question - it is Roseodiscus formosus. And we had that species already in 2021 at this location .....

all the best,
Andreas
Andreas Gminder, 08-02-2025 20:49
Andreas Gminder
Re : bryophilous Helotiales IKI rr
Hello once more,

the location is by the way the highest elevation with 470-480 m a.s.l., whereas the other known locations do not exceed 250 m a.s.l.. Also the other German location are all in the atlantic climat zone, whereas the location in Goslar is just at the border to continental climate.

all the best,
Andreas
Hans-Otto Baral, 08-02-2025 22:12
Hans-Otto Baral
Re : bryophilous Helotiales IKI rr
Ah that's a good idea!