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23-01-2026 21:50

Cameron DK

I am looking for this please publication. is anyon

10-01-2026 20:00

Tom Schrier

Hi all,We found picnidia on Protoparmeliopsis mur

21-01-2026 19:55

Bohan Jia

Hi,  Could this be Nemania aureolutea? Or did I

21-01-2026 16:32

Gernot Friebes

Hi,I need your help with some black dots on a lich

21-01-2026 16:48

Gernot Friebes

Hi,after my last unknown hyphomycete on this subst

20-01-2026 17:49

Hardware Tony Hardware Tony

I offer this collection as a possibility only as e

15-01-2026 15:55

Lothar Krieglsteiner Lothar Krieglsteiner

this one is especially interesting for me because

03-01-2026 15:36

éric ROMERO éric ROMERO

Bonjour, Pouvez-vous me dire quel est le nom à p

19-01-2026 12:01

Castillo Joseba Castillo Joseba

Me mandan el material seco de Galicia (España) 

17-01-2026 19:35

Arnold Büschlen

Hallo, ich suche zu Cosmospora aurantiicola Lite

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Lachnum virgineum ?
Thierry Blondelle, 29-12-2023 10:16
Thierry BlondelleHello
Just a confirmation of Lachnum virgineum found on dead chestnut wood. Attached are the photos of the microscopy. Thanks.
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Michel Hairaud, 29-12-2023 10:39
Michel Hairaud
Re : Lachnum virgineum ?
Hi Thierry, 
It seems that the last cells of the hairs you show are smooth , which would rather match Dasyscyphella intead of LAchnum

Or am I wrong ? 
AmitiésMichel
Thierry Blondelle, 29-12-2023 13:35
Thierry Blondelle
Re : Lachnum virgineum ?
Hi Michel

I think you are right. New observations point in your direction. What species are you thinking of? I saw that there was a castaneicola species.
PS: I am looking for a key to determining the genera of felted or hairy inoperculate ascomycetes. Is there one?

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Thierry Blondelle, 29-12-2023 13:52
Thierry Blondelle
Re : Lachnum virgineum ?
Ain Raitviir's key which takes into account the length of the last article of the hair and the length of the spores leads to D. nivea.
Michel Hairaud, 29-12-2023 18:15
Michel Hairaud
Re : Lachnum virgineum ?
D. nivea is a common species through all winter and can be found nearly systematically on lower faces of Quercus stumps or other hardwood. 
Michel
Guy Marson, 30-12-2023 22:43
Re : Lachnum virgineum ?
Hi Thierry, 


What various authors consider to be Lachnum virgineum consists genetically of 5 species, as can be seen in a small section of the ITS1 (-> screenshot of an ailgnment below).

What Lachnum virgineum really is cannot be identified genetically either, because the first description of Lachnum virgineum (Batsch) P. Karst. (1871) is too old to be sequenced.

My best wishes for 2024 :).


Guy

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Thierry Blondelle, 31-12-2023 08:23
Thierry Blondelle
Re : Lachnum virgineum ?
Thank you Guy for this update on Lachnum virgineum.
Best wishes too