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11-09-2025 16:57

Jason Karakehian Jason Karakehian

Our revision of Marthamycetales (Leotiomycetes) is

28-07-2011 18:31

Alex Akulov Alex Akulov

Dear FriendsToday I made the pdf file of Velenovsk

12-11-2019 10:32

Miguel Ãngel Ribes Miguel Ángel Ribes

Hi againExactly at the same place than my previous

25-12-2019 17:54

Valencia Lopez Francisco Javier

Hola a todos/asEstas supuestas pezizas estaban en

12-07-2015 00:05

Nedim Jukic Nedim Jukic

This one from the same locality as the previous on

28-08-2014 18:36

Rubén Martínez-Gil Rubén Martínez-Gil

Hola a todos. Subo unas fotos de un asco que enco

31-05-2026 22:53

éric ROMERO éric ROMERO

Bonjour tous, Je n'ai pas d'idée pour cette esp

30-05-2026 21:12

Philippe PELLICIER

Sur branche de mélèze (Larix) près de la neige,

31-05-2026 10:35

Hulda Caroline Holte

Hello,I collected this species growing on a rather

25-05-2026 16:35

Bernard CLESSE Bernard CLESSE

Bonjour à toutes et tous,J'ai trouvé récemment,

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Pyrenos on Quercus leaf
Juuso Äikäs, 20-06-2022 07:56
I found some tiny black pyrenos growing on a fallen, decaying Quercus leaf. 

The 2-celled spores measure 8.3 - 9 × 3.5 - 4.1 µm. IKI negative.

Does anyone know what this is? Probably something quite common. Venturiaceae?
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Spooren Marco, 20-06-2022 11:35
Spooren Marco
Re : Pyrenos on Quercus leaf
Hello,

What do you think about "Mycosphserella punctiformis "?If there was no name change there ?

Best,

Marco
Juuso Äikäs, 20-06-2022 13:21
Re : Pyrenos on Quercus leaf
Thanks for the answer -- that does seem like a good suggestion.

The spores are a bit wide with this one, though. But if measured from the septum, the width is 2.7 - 3.2 µm, which might fit better. I'm not sure which measurement style is preferred in this case (center vs. max width).
Spooren Marco, 20-06-2022 15:49
Spooren Marco
Re : Pyrenos on Quercus leaf
Dear,

According to Corlett, annotated list names in Mycosphaerell, your measures are reasonable.There is a study in Mycosphaerella by Andre Aptroot, but I not use that one.

Best,

Marco