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01-03-2024 18:06

Marc Detollenaere Marc Detollenaere

Dear Forum,On unidentified moss I found some small

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éric ROMERO éric ROMERO

Bonjour, Sur laissée de mustélidé indeterminé

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Yannick Mourgues Yannick Mourgues

On Fagus decorticated wood near a stream. Diametr

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Malcolm  Greaves Malcolm Greaves

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25-02-2024 19:50

Robin Isaksson Robin Isaksson

Found this one 3-4 times on resin in SwedenAsci IK

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me mandan el material seco de Galicia España reco

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Asco inconue
Piet BORMANS, 28-06-2008 14:31
Piet BORMANSBonjour à tous,
Je sollicite votre aide pour la détermination d'un ascomycète que j'ai trouvé sur bois mort, très humide.
Voici mes données:
Apothécies de 0,5 - 2 mm maximum.
Micro:
Spores: 15-18 x 4-5 µm
Asques: 100-125 x 10-12 µm
Les paraphyses sont pluri-guttulées
J'ajoute 4 photos:
- Apothécies, asques, paraphyses et spores

Merci d'avance de votre aide.
Piet Bormans
  • message #5015
Piet BORMANS, 28-06-2008 14:33
Piet BORMANS
Re:Asco inconue
Asque
  • message #5016
Piet BORMANS, 28-06-2008 14:34
Piet BORMANS
Re:Asco inconue
Spores
  • message #5017
Piet BORMANS, 28-06-2008 14:34
Piet BORMANS
Re:Asco inconue
Paraphysen
  • message #5018
Hans-Otto Baral, 28-06-2008 17:51
Hans-Otto Baral
Re:Asco inconue
Hi Piet

This is "Pachydisca" fulvidula or perhaps a closely related species. It is a quite difficult group. Usually the spores are longer, 18-21 or up to 26.5 µm. The asci are without croziers and I suppose that is also visible in your last image. Could you please test the Lugol reaction and make a photo of it? It would also be interesting to see the excipulum in median section (at about 400x). This should look a bit like in Mollisia.

From where comes this find? The species is typical of acis bogs.

Zotto

Piet BORMANS, 29-06-2008 15:53
Piet BORMANS
Re:Asco inconnu
Dear Zotto.
Thanks for your response. This find was done in Belgium, municipality Houthalen-Helcheren - domain Kelchterhoef, in a dale of the Roosterbeek. It’s found together with Pachyella babingtonii. Date: 26/06/2008. Ifbl: D7.31.11

Picture asci with Lugol x 1000 (1 = 1,01 µm)
  • message #5032
Piet BORMANS, 29-06-2008 15:58
Piet BORMANS
Re:Asco inconnu
Asci 1/2 congored x 1/2 eosine x 400 (1 = 2,51 µm)
  • message #5033
Piet BORMANS, 29-06-2008 15:59
Piet BORMANS
Re:Asco inconnu
Excipulum x 100 (1 = 10,1 µm)
  • message #5034
Piet BORMANS, 29-06-2008 16:00
Piet BORMANS
Re:Asco inconnu
X = Exipulum x 400
  • message #5035
Piet BORMANS, 29-06-2008 16:01
Piet BORMANS
Re:Asco inconnu
Spores x 1000
  • message #5036
Hans-Otto Baral, 29-06-2008 18:37
Hans-Otto Baral
Re:Asco inconue
Dear Piet

The IKI reaction of the ascus apex is a bit indistinct (should be more clearly blue). Otherwise all fits well to fulvidula, in my opinion. I have images of apos with yellow hymenium as well as greyish, and exterior from white to blackish-brown near the base. The species is related to Hymenoscyphus epiphyllus and should belong in that genus, or in Phaeohelotium if that is considered separable.

Zotto
Piet BORMANS, 29-06-2008 21:27
Piet BORMANS
Re:Asco inconue
Thank you very much Zotto