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14-07-2025 11:20

Michel Hairaud Michel Hairaud

Bonjour, Voici une espèce de  (?) Hyaloscyphace

16-01-2023 21:31

Riet van Oosten Riet van Oosten

Hello, Nearby the find of Calycina claroflava on

14-07-2025 17:55

Yanick BOULANGER

BonjourAutre dossier laissé en suspendJe viens de

14-07-2025 11:17

Yanick BOULANGER

BonjourJ'ai un dossier Jackrogersella qui est rest

14-07-2025 15:52

Gernot Friebes

Hi,I wanted to share this collection on Rubus idae

14-07-2025 13:37

Gernot Friebes

Hi,do you think this collection could be R. ulmari

14-07-2025 11:19

Michel Hairaud Michel Hairaud

Bonjour, Voici une espèce de  (?) Hyaloscyphace

25-02-2023 18:36

Elisabeth Stöckli

Bonsoir, Trouvé sur un tronc de Salix recouvert

12-07-2025 16:45

Thierry Blondelle Thierry Blondelle

Bonjour à tous,J'avais d'abord pensé à des stro

05-07-2025 12:38

Åge Oterhals

I found this pyrenomycetous fungi in pine forest o

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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