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14-04-2026 05:32

Ethan Crenson

Hi all, A few weeks back a friend pointed out som

12-04-2026 17:56

Hardware Tony Hardware Tony

Found on dead stems in February earlier this year

12-04-2026 15:52

Gernot Friebes

Hi,I'm looking for help with this anamorph collect

12-04-2026 12:22

William Slosse William Slosse

In a dune grassland in Oostduinkerke (Belgium), on

11-04-2026 15:45

Zuzana Sochorová (Egertová) Zuzana Sochorová (Egertová)

Please, could anyone send me this paper?Moyne G.,

11-04-2026 13:34

Artem Ptukha

Hello, I am seeking assistance with the identific

11-04-2026 10:42

Castillo Joseba Castillo Joseba

Me mandan el material de Galicia, España, recolec

11-04-2026 10:19

Michel Hairaud Michel Hairaud

Chers amis d'Ascofrance , voici une très bonne no

11-04-2026 10:10

Michel Hairaud Michel Hairaud

Dear Ascofrance members, here is some very good ne

10-04-2026 23:22

Gernot Friebes

Hi,ascospores are 1- to 3-septate, approximately 

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pyrenomycete parasitized or not?
François Bartholomeeusen, 06-05-2019 15:14
Hi forum members,

On carex (probably C. acutiformis) I found, just below the epidermis, black ellipsoid fruiting bodies with a tapering ostiole. Here and there are brown ancoring hyphen.
During an initial examination I found filiform spores that were unripe, in my view. After adding Melzer reagent I counted seven septa.
In the second examination, three days later, there were winding threads visible at both ends of the asci. These threads grew from each individual spore. In Congo red the "healthy" asci react strongly as well as the apical apparatus. I wonder if, what I thought to be paraphyses, are perhaps parasitic conidiophores?
Third examination: several asci bend like a banana and the contents disintegrated before my eyes.
Two questions: 1) which pyrenomycete have I examined?
2) Can anyone explain the phenomenon, is it maturation or a parasite?
Thank you for any additional information.

François Bartholomeeusen
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Eduard Osieck, 07-05-2019 09:24
Re : pyrenomycete parasitized or not?
You may consider the genera Ophioceras and Plagiostoma although the latter has non-septate spores and is more or less confined to Urtica. The following key dealing with pyrenomycetes (s.l.) with filiform spores may be of help (i.e. key A9): https://www.mycologen.nl/NMV_Ascomyceten.html Eduard
Alain GARDIENNET, 07-05-2019 16:26
Alain GARDIENNET
Re : pyrenomycete parasitized or not?
François Bartholomeeusen, 07-05-2019 20:54
Re : pyrenomycete parasitized or not?
Good evening, Eduard and Alain,

Thank you for your advice, I will follow your guidelines and hopefully find the right solution.
Best regards,

François
Jac Gelderblom, 09-05-2019 19:17
Re : pyrenomycete parasitized or not?
why not Gaeumannomyces?

It was my first thought when I saw ypor pictures

greetings

Jac Gelderblom
Jac Gelderblom, 09-05-2019 19:17
Re : pyrenomycete parasitized or not?
why not Gaeumannomyces?

It was my first thought when I saw ypor pictures

greetings

Jac Gelderblom
Alain GARDIENNET, 09-05-2019 21:56
Alain GARDIENNET
Re : pyrenomycete parasitized or not?
Yes Jac, of course. Plgiosphaera-like on grasses =  Gaeumannomyces.
François Bartholomeeusen, 10-05-2019 11:34
Re : pyrenomycete parasitized or not?
Dear Jac and Alain,

Thank you very much for providing the solution. Probably it is Gaeumannomyces caricis, unfortunately I don't find a key or "Mycotaxon 11 (1): 23 (1980). I suspect that the website of Cyberliber is down!

Many greetings,

François
Martin Bemmann, 10-05-2019 11:42
Martin Bemmann
Re : pyrenomycete parasitized or not?
Mycotaxon you will find also here:


regards

Martin
François Bartholomeeusen, 10-05-2019 12:07
Re : pyrenomycete parasitized or not?
Hi Martin,

Thank you very much, I've got it!

greetings,

François