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03-09-2025 21:59

Philippe PELLICIER

La Léchère, Col de la Madeleine, alt 1970m, au s

03-09-2025 12:44

Enrique Rubio Enrique Rubio

Hi to somebody.I would like to know your opinion o

02-09-2025 10:28

Castillo Joseba Castillo Joseba

De ayer en madera muy podrida de haya (Fagus)A ver

31-08-2025 19:41

Enrique Rubio Enrique Rubio

Hi to someone.I need to download this issue of Sve

02-09-2025 11:34

Thomas Læssøe

https://svampe.databasen.org/observations/10527903

31-08-2025 17:32

Michel Hairaud Michel Hairaud

Bonjour, Pas d'identité trouvée pour cette réc

01-09-2025 08:42

François Corhay

Un ami, conservateur d'une RN en Belgique, m'a adr

31-08-2025 14:34

Thomas Flammer

I have found a Rutstroemia on abt. 2000 m on Alnus

29-08-2025 19:04

Thomas Flammer

Spores 21.2 - 26.2 x 8.3 - 11.3 µm - Q: 2.20 - 2.

30-08-2025 18:29

Joaquin Martin

Hi,I found this undetermined ascomycete on broadle

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Yellow longneck...
Martin Bemmann, 19-12-2009 22:49
Martin BemmannHello,

this one I found last weekend before it started to freeze... meanwhile we have here -14 C.
I collected a dead twig of Prunus avium observing some apothecia with the hand loupe that turned out to be Neodasyscypha cerina. But under the bino I found some other fungi upon it, among them this one I can't determin.
By habitus it reminds me to the Natantiella I found recently, immersed in the soft decaying wood on decorticated part of the twig, with a "long" (< 1mm) ostiole neck and bunshes of asci at the bottom when excavated. ( I didn't manage yet to prepare a complete specimen but I belive it would have the same shape as a Natantiella or Eutypella.
But the colour of the outer wall and the ostiole is yellow and it is not crusty at all but gelatinous. Shape and appearance of the spores is also very differrent.
Can somebody show me the way?

Best regards,

Martin
  • message #9873
Martin Bemmann, 19-12-2009 22:52
Martin Bemmann
Re:Yellow longneck...
another view in water showing the cluster of asci to the left:
  • message #9874
Martin Bemmann, 19-12-2009 22:54
Martin Bemmann
Re:Yellow longneck...
Asci (81-91x8,4-11 µm):
  • message #9875
Martin Bemmann, 19-12-2009 22:54
Martin Bemmann
Re:Yellow longneck...
more asci:
  • message #9876
Martin Bemmann, 19-12-2009 22:55
Martin Bemmann
Re:Yellow longneck...
and spores: (27,6-31,9 x 3,7-4,3 µm):
  • message #9877
Martin Bemmann, 19-12-2009 23:02
Martin Bemmann
Re:Yellow longneck...
Finally, the apical apparatus stained slightly blue in IKI:

  • message #9878
Martin Bemmann, 20-12-2009 15:18
Martin Bemmann
Re:Yellow longneck...
Hi again,

during my search I came across the genus Pseudohalonectria that shows morphological similarities. But the taxa descibed by Shearer (1989) do not fit well to my collection (much larger dimensions of asci and ascospores), not to mention that P. is found generally on submersed wood which wasn't the case with my find.
On this stick are 2-3 ascocarps more. I don't want to slaughter them until I see a direction what to search for.
Any suggestions welcome!

Best regards,

Martin


Edited: Pseudohalonectria
Martin Bemmann, 20-12-2009 23:14
Martin Bemmann
Re:Yellow longneck...
PS: I am not sure about IKI+... maybe the apical apparatus contains only refractive bodies...
Jacques Fournier, 21-12-2009 15:56
Jacques Fournier
Re:Yellow longneck...
Hi Martin,
I agree Pseudohalonectria is a possible lead, but noy very convincing because of the different ecology. Yellow waxy necks and fusiform spores also indicate possible relationships with Ceratosphaeria but in this genus the ascomatal wall is much thicker. I suggest you first manage to find more material, or try to incubate your branch of Prunus outdoor and be patient! If it works Martina Réblova could perhaps help you. Or just ask her now at reblova@ibot.cas.cz.
Cheers,
jacques
Martin Bemmann, 21-12-2009 16:13
Martin Bemmann
Re:Yellow longneck...
Thank you Jaques,

I will try to contact her. The branch lies in my garage covered with a damp tissue. Outside it is some degrees below zero...

Best regards,

Martin