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12-01-2014 17:07

Asco sur sapin
Gilbert MOYNE

Voici un ascomycète récoté sur sapin pour leque

14-01-2014 17:03

Discomycete on wood of deciduous tree
Jakob Schneller Jakob Schneller

Can sombody help me.  Spores with many septa, abo

14-01-2014 17:03

Discomycete on wood of deciduous tree
Jakob Schneller Jakob Schneller

Can sombody help me.  Spores with many septa, abo

14-01-2014 17:02

Discomycete on wood of deciduous tree
Jakob Schneller Jakob Schneller

Can sombody help me.  Spores with many septa, abo

14-01-2014 17:01

Discomycete on wood of deciduous tree
Jakob Schneller Jakob Schneller

Can sombody help me.  Spores with many septa, abo

13-01-2014 16:22

Calycina
Salvador Tello

Hola a todos.Tengo este hongo que cogí hace unos

14-01-2014 11:10

bibliography of Hyphodiscus and Cistella
Quijada Luis

Hi all, Nowadays I am working in two genus (Hypho

02-01-2014 01:11

No se que puede ser
Salvador Tello

Hola a todos.hace unos días encontré este ascomi

11-01-2014 23:11

Tricharina gilva?
Rubén Martínez-Gil Rubén Martínez-Gil

Hola a todos.Encontré en diciembre de 2012 esto

11-01-2014 23:32

Octospora
Zuzana Sochorová (Egertová) Zuzana Sochorová (Egertová)

Good evening,I have got here a smooth-spored Octos

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Microthyrium on Alnus?
Marc Detollenaere, 19-04-2023 07:31
Marc DetollenaereDear Forum,
On a small branch of Alnus glutinosa I found some small black pyrenomycetes(0.2mm) with hyaline 1-septate spores of 19.5x4.5µ.Each part of the spore contained 2 large guttules. The asci were remarkebly sacculate.Any ideas?

Marc
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Chris Yeates, 19-04-2023 15:21
Chris Yeates
Re : 1-septate pyreno on Alnus
Hi

Tricky one. The asci and spores (though not the perithecium, from what I can see) remind me a little of Microthyriales. Were the perithecia/pseudothcia flattened? Might the spores have very thin appendages? (oil immersion + cotton blue).

Cordialement, Chris
Marc Detollenaere, 19-04-2023 18:49
Marc Detollenaere
Re : Microthyrium on Alnus?
Hi Chris,

It looks indeed as a Microthyreaceae. Following the genus key, I arrived at Microthyrium but in Microthyrium I have no match.No appendages or cilia were seen in cottonblue.
Another genus?
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Alain GARDIENNET, 20-04-2023 21:55
Alain GARDIENNET
Re : Microthyrium on Alnus?
Bonsoir Marc,
Je serais plutôt du même avis que Chris. Qu'est-ce qui te fait penser à un Microthyrioaceae ? la forme des ascomes en forme de thyriothèces ?
La structure de la paroi ne colle pas, la micro non plus. J'opterais davantage pour un Mycosphaerella. Mais je peusx me tromper.
Alain
Marc Detollenaere, 21-04-2023 10:18
Marc Detollenaere
Re : Microthyrium on Alnus?
Thanks Alain for your remarks. I will look further
Marc