Accès membres

Mot de passe perdu? S'inscrire

04-06-2024 22:36

David Wasilewski

From the edge of a lawn near an old apple tree, ap

04-06-2024 19:58

Louis DENY

Bonsoir forumRécolté à Gérardmer (Vosges) alti

04-06-2024 17:29

Lothar Krieglsteiner Lothar Krieglsteiner

found yesterday on Carex flacca, Schwäbische Alb,

03-06-2024 23:14

Shane John

Barghoorn, E.S.; Linder, D.H. 1944: Marine fungi:

03-06-2024 10:21

Danny Newman Danny Newman

Hello AscoFrance, I have been made aware of a sig

24-04-2021 09:50

Josep Torres Josep Torres

Hola.Un Hypocreal brotando sobre el himeno de unos

02-06-2024 12:01

Yves Antoinette

Trouvé dans la litière de Douglas, aspect de gyr

01-06-2024 20:26

Andgelo Mombert Andgelo Mombert

Bonjour à tous, Sur branche morte de Carpinus en

02-06-2024 10:59

Andgelo Mombert Andgelo Mombert

Bonjour, Sur ou à proximité de stromas morts de

02-06-2024 15:25

B Shelbourne B Shelbourne

• Hymenoscyphus: Macro, habitat, VBs, spores, ex

« < 97 98 99 100 101 > »
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?
  • message #73062
  • message #73062
  • message #73062
  • message #73062
  • message #73062
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