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30-07-2025 10:12

Asco1 sur crotte de mouton
Bernard CLESSE Bernard CLESSE

Bonjour à toutes et tous,Pourriez-vous m'aider à

31-07-2025 16:32

Carbophilous discomycete - Anthracobia pseudorehmii?
Andreas Gminder Andreas Gminder

Dear collegues,today I found on a very fresh fire

30-07-2025 20:52

apo on Pteridium aquilinum
Bohan Jia

Hi together,  I've been looking posts in AscoFra

30-07-2025 18:06

Orbilia dryadum?
Stefan Jakobsson

On a decorticated twig of Alnus incana on moist so

29-07-2025 18:59

Ayuda con esta
Castillo Joseba Castillo Joseba

Me mandan el  material seco de Galicia, España,

28-07-2025 12:34

Capronia
Enrique Rubio Enrique Rubio

Hi to everybody.I would appreciate any ideas about

28-07-2025 04:59

identification?
Richard Droker

Growing on resin (over moss on Tsuga heterophyll)l

13-06-2025 09:41

Aquatic ascomycete.
Josep Torres Josep Torres

Hello.A cerebriform ascomycete sprouting scattered

13-06-2025 16:34

Strossmayeria-like on Fagus
Andgelo Mombert Andgelo Mombert

Bonjour,Un petit discomycète qui me résiste. Il

24-07-2025 19:02

Discomiceto 2510
Castillo Joseba Castillo Joseba

De esta mañana en tronco caido de Haya A ver si

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Black discomycete on Rhododendron ferrugineum
Gernot Friebes, 06-06-2018 12:46
Hi,

this one I collected on a dead branch of Rhododendron ferrugineum. The ascospores measure about 11-11,5 x 3,5-3,8 µm and are filled with numerous oil drops. The asci have croziers and are IKI-. The paraphyses are hyaline and slightly thickened apically. The medulla contains greenish material. Thanks again for your help!

Best wishes,
Gernot
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Hans-Otto Baral, 06-06-2018 13:03
Hans-Otto Baral
Re : Black discomycete on Rhododendron ferrugineum
Did you test KOH for ionomidotic?
Gernot Friebes, 06-06-2018 14:19
Re : Black discomycete on Rhododendron ferrugineum
There is indeed a yellowish/greenish pigment extracted in KOH. Do you have something specific in mind?
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Hans-Otto Baral, 06-06-2018 18:24
Hans-Otto Baral
Re : Black discomycete on Rhododendron ferrugineum
It should be a Cordieritidaceae, and there it is very difficult to give a name.

I have a folder Phaeangella which is a potential name for these fungi.  Compare "semilichenia" and P. ulicis. They are quite similar but their DNA is very divergent!

Your fungus will be difficult to distinguish from them by morphology I fear.

How large are your apos?
Gernot Friebes, 06-06-2018 19:58
Re : Black discomycete on Rhododendron ferrugineum
Great, thanks. That does look very similar. The apos are around 0,5 mm in diam.

Best wishes,
Gernot
Hans-Otto Baral, 06-06-2018 21:43
Hans-Otto Baral
Re : Black discomycete on Rhododendron ferrugineum
Und das war richtig in den Alpen? Wahrscheinlich hat auch daran Guy großes Interesse.
Gernot Friebes, 06-06-2018 21:49
Re : Black discomycete on Rhododendron ferrugineum
Der Fundpunkt ist ± identisch mit den Orbilien, die ich dir heute geschickt habt (nur etwas weiter SW).