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22-04-2025 14:19

Mollisia albogrisea ?
éric ROMERO éric ROMERO

Bonjour à tous, Je sollicite votre aide et vos r

22-04-2025 09:35

Anamorph on a seed-pod of Cytisus scoparius
François Bartholomeeusen

Dear forum members, Can someone help me!On April

22-04-2025 10:37

A second anamorph on seed-pod Cytisus
François Bartholomeeusen

Also found on April 18, 2025 on an old seed-pod of

29-03-2025 05:45

Ciboria / Rutstroemia (?)
Sebastien Basso

Hello, I'm conducting a mycological inventory in

21-04-2025 10:52

Ayuda con esta
Castillo Joseba Castillo Joseba

me mandan el material de Galicia (España), recole

18-04-2025 23:16

Mollisia
Robin Pétermann Robin Pétermann

Bonjour, Voici une probable Mollisia, genre que j

19-04-2025 20:48

Pyreno on Fagus sylvatica.
Per Marstad Per Marstad

Dear Ascofrance. I have not posted pyrenos for a l

19-04-2025 18:58

Korf & Lizon 2000
Michel Hairaud Michel Hairaud

Bonjour,Je recherche l'article suivant :  ... K

19-04-2025 08:51

Unknown pyrenomycetous fungus growing on cowberry
Henri Koskinen

Could you help me in the right direction with this

18-04-2025 21:54

Unknown aquatic pyrenomycete
Hartmut Schubert Hartmut Schubert

Hi Forum,I found this aquatic pyrenomycete a few d

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Is this a Phaeohelotium on a female catkin of Alnus?
François Bartholomeeusen, 19-06-2024 18:32
On female Alnus catkins I found very small fruit bodies (height < 3 mm; disk < 2mm). The disc had a pink / viollet shade.
Asci: 73x7.5 µm; croziers +; LUG +;
Paraphysis: With refractive guttules,
Spore: (15.6) 16.2 - 18.2 (18.4) × (3.7) 3.9 - 4.67 (4.7) µm; Me = 17.4 × 4.3 µm; Qe = 4.1
Could this be Phaeohelotium epiphyllum?

Thanks in advance,


François

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Hans-Otto Baral, 19-06-2024 20:32
Hans-Otto Baral
Re : Is this a Phaeohelotium on a female catkin of Alnus?
You should try to find living mature asci, also unemptied dead immature asci in IKI for the apical ring shape.

I think the long stipe excludes P. epiphyllum. Is the medulla non-gelatinous and withut crystals?

Living paraphyses with their contents are required.
François Bartholomeeusen, 20-06-2024 08:54
Re : Is this a Phaeohelotium on a female catkin of Alnus?
Dear Zotto,

The medulla is non-gelatinous and without crystals. Right now the FRBs are immature and I cannot determine the apical ring in IKI.

Thank you very much for your quick response!

François


François Bartholomeeusen, 20-06-2024 11:31
Re : Is this a Phaeohelotium on a female catkin of Alnus?
I'm sorry, but I want to show you more pictures. Maybe there are crystals after all? I thought it was a contamination with conidia. I also found a reference to Ombrophila rivulorum which shows a great similarity in appearance.
Maybe an Ombrophila after all?

François

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Hans-Otto Baral, 20-06-2024 12:03
Hans-Otto Baral
Re : Is this a Phaeohelotium on a female catkin of Alnus?
II think you are now on the right track. Though very small these are crystals in the hymenium.

The living paraphysis cels are here empty. In the last pic it looks a bit like VBs but elongated as typical of Ombrophila.

The genus is very difficult.