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22-10-2019 00:02

Yannick Mourgues Yannick Mourgues

On Fagus decorticated wood near a stream. Diametr

21-10-2019 21:53

Markov Sergey

I found small Scutellinia species on very wet very

21-10-2019 19:51

Mirek Gryc

HelloI warmly ask for your opinion on this collect

17-10-2019 17:04

Gilbert MOYNE

Bonjour, Une récolte de mardo 15/10/2019, Réser

21-10-2019 13:06

Castillo Joseba Castillo Joseba

Del pasado martes  en bosque de  piceas y hayasP

21-10-2019 12:53

Castillo Joseba Castillo Joseba

Del pasado Jueves en bosque de piceas, a 1250 m. d

21-10-2019 09:46

Koszka Attila

Dear Forum! Yesterday I found this species, is thi

15-10-2019 21:47

Stephen Mifsud Stephen Mifsud

Hi, my eye fell on a dead stalk of a herbaceous pl

20-10-2019 00:11

PASCAL DUBOC

Bonsoir sur bois pourrissant de feuillus en ripis

20-10-2019 19:22

BERNARD CLESSE BERNARD CLESSE

Bonsoir à toutes et tous,J'ai trouvé récemment

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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