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24-06-2019 12:01

Blasco Rafael Blasco Rafael

Hola, les presento otro hongo imperfecto, para ver

23-06-2019 15:18

ida Bruggeman-Nannenga

fruitbody tiny, ca 150 um dia, dark, round, black

22-06-2019 17:36

Joop van der Lee

The following is generated when trying to use the

23-06-2019 15:18

ida Bruggeman-Nannenga

fruitbody tiny, ca 150 um dia, dark, round, black

20-06-2019 23:28

Patrice TANCHAUD

Bonsoir, récolte sur débris de plantes. Spores

21-06-2019 09:40

Blasco Rafael Blasco Rafael

Hola, tienen ustedes alguna idea para este hongo ?

19-06-2019 19:45

Andgelo Mombert

Bonsoir, Sur tige morte d'ombellifère, peut-êtr

20-06-2019 14:58

Juuso Äikäs

I found these in a small grove, growing on a falle

21-06-2019 15:03

Michel Delpont Michel Delpont

Bonjour à tous! Je recherche la description d'As

20-06-2019 23:28

Patrice TANCHAUD

Bonsoir, récolte sur débris de plantes. Spores

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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