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30-01-2009 22:50

Yannick Mourgues Yannick Mourgues

Hi. Need help for this specie. I'm sure I have

30-01-2009 18:40

Jean Pierre Dechaume Jean Pierre Dechaume

Sur branches mortes de houx, en grand nombre. mal

30-01-2009 00:30

Yannick Mourgues Yannick Mourgues

Hi. Here is a specie near B. subpallida. I need

28-01-2009 00:18

Uwe Lindemann Uwe Lindemann

Hello Forum, I am searching for this article: PRO

27-01-2009 23:25

Yannick Mourgues Yannick Mourgues

Bonsoir. Comme Alain à une certaine époque, m

27-01-2009 13:10

Alain BRISSARD

2 autres clichés; la est de qualité médiocre du

27-01-2009 13:07

Alain BRISSARD

Bonjour à tous Peut-être banal pour vous mais j

26-01-2009 19:32

VASILEIOS KAOUNAS

On cow dung. (1) Apothecia: diam.: 1-2 mm. Hymen

25-01-2009 08:26

Christian Lechat Christian Lechat

Dear friends, I would like to know if somebody ha

24-01-2009 16:40

Renée Lebeuf

Bonjour à tous, Je sollicite votre aide pour

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asco sp.
Yannick Mourgues, 30-01-2009 22:50
Yannick MourguesHi.

Need help for this specie. I'm sure I have seen it in this forum next year, but not able to find it again.

Host: on decayed wood of Fraxinus.

Macro: many apo. short stipited, hymenium yellow to grey-green, Excipulum grey-green with many short yellow hairs. Base grey-green to black.

Micro :
spores 7-8,4x3,8-4,1 um, without guttules. Q=1,8-2,1.
Ascus 60-80x5-6 um, with croziers, IKI+
Paraphyses spindly, rounded at the end, with some guttules, 1-2 um widh, 70 to 100 um long.
Hairs brown, septate, more then 4 celled, 100-120x5-6 um. Becomes green With Lugol.

Have you got an idea ?

Yannick
  • message #6529
Yannick Mourgues, 30-01-2009 22:50
Yannick Mourgues
Re:asco sp.
another pict...
  • message #6530
Yannick Mourgues, 30-01-2009 22:50
Yannick Mourgues
Re:asco sp.
Micro...
  • message #6531
Guy Garcia, 30-01-2009 23:22
Re:asco sp.
Neodasysycpha cerina ?
Yannick Mourgues, 30-01-2009 23:37
Yannick Mourgues
Re:asco sp.
Oui, voilà ! C'est ça.
Je m'étais arrêté à Lachnum cerinus/a sans trouver ce genre.
Merci Guy !
Yannick
Hans-Otto Baral, 30-01-2009 23:38
Hans-Otto Baral
Re:asco sp.
Yes, je pense la même. But N. cerina MUST be simple septate, and I feel your image does not show a crozier. You can test with KOH: usually this species yields a purplish dye from the hairs into the medium.
Zotto
Yannick Mourgues, 30-01-2009 23:42
Yannick Mourgues
Re:asco sp.
I'm going to try KOH.
What does it mean : "simple septate" ?
Yannick Mourgues, 30-01-2009 23:52
Yannick Mourgues
Re:asco sp.
Hairs in KOH seems to become black.
Yannick
  • message #6539
Stip Helleman, 31-01-2009 01:04
Stip Helleman
Re:asco sp.
Hi Yannick,
simple septate means without croziers, and the purplish dye comes from the excipulum.
Stip
Yannick Mourgues, 31-01-2009 01:11
Yannick Mourgues
Re:asco sp.
Thank's Stip !
Y
Hans-Otto Baral, 31-01-2009 11:10
Hans-Otto Baral
Re:asco sp.
I noted the purplish dye from the hairs (similar as in Perrotia flammea), but maybe it comes also from the excipulum. This dye is strongest at the moment when the KOH comes in contact with the fungus, later it rapidly dilutes. If you simply mount a fragment in KOH you will not see it. Therefore either put an apo under the bino in a drop of KOH during which you look what happens, or you add KOH to a water mount and look what happens as soon as the KOH reaches the fungus.

Zotto