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11-06-2026 19:03

Nicolas VAN VOOREN Nicolas VAN VOOREN

Chers membres d'Ascofrance,Le site sera placé en

11-06-2026 19:01

William Slosse William Slosse

Hello all,In an attempt to make a culture of a sus

10-06-2026 23:08

éric ROMERO éric ROMERO

Bonjour tous, Je vous propose un Mollisia trouvé

11-06-2026 16:24

Ethan Crenson

Hi all, Recently, a friend found this Orbilia in

09-06-2026 18:32

Camille Mertens

Sur morceau de roseau immergé 0,5 - 0,7 mm de dia

10-06-2026 12:54

Steve Clements

Bonjour encore, Pouvez-vous m'aider, s'il vous pl

10-06-2026 21:16

François Freléchoux François Freléchoux

Bonsoir,Le dernier du jour, en attendant votre avi

10-06-2026 21:07

François Freléchoux François Freléchoux

Toutes les tiges de gentianes jaunes de l'an passÃ

10-06-2026 13:41

François Freléchoux François Freléchoux

Bonjour à nouveau, Voici une trouvaille d'hier.

10-06-2026 11:53

Steve Clements

Bonjour, This disco is abundant on dead stems of

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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