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07-12-2025 22:43

Andreas Millinger Andreas Millinger

Good evening, tried to determine with Munks Valsa

07-12-2025 17:43

Malcolm  Greaves Malcolm Greaves

This Helvella was in mixed woodland. Uniform cupul

07-12-2025 16:07

Arnold Büschlen

Hallo, ich habe in einer Moos-Aufsammlung (epiohy

05-12-2025 17:33

Bruno Coué Bruno Coué

Bonjour, je serais heureux de recueillir votre avi

07-12-2025 09:24

Castillo Joseba Castillo Joseba

De la pasada semana en Galicia EspañaEn el suelo

06-12-2025 00:19

Viktorie Halasu Viktorie Halasu

Hello, would anyone have this article, please? An

04-12-2025 23:53

Malcolm  Greaves Malcolm Greaves

Is there an up to date Anthracobia key available?T

04-12-2025 21:30

Ethan Crenson

Hello all, I am looking for the following:  Bar

02-12-2025 18:59

Malcolm  Greaves Malcolm Greaves

This pair of ascos 2.5cm across were on recently b

03-12-2025 20:02

Buckwheat Pete

Hello everyone, does anyone know the genus Godroni

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Diatrype polycocca on Acer negundo ?
Alex Akulov, 28-09-2013 23:32
Alex AkulovDear Friends,
Today on the dead fallen branches of Acer negundo I have collected interesting Diatrype sample, looking like Diatrype polycocca. Asci are 8-sporous, long stipitate, the length of the sporiferous parts are 51-54 (single 70) micrometers, the width - (6.5) 7,1-10,6 micrometers, the length of stipes are 44-70 micrometers. Ascospores allantoid, smoky-brown, 10,9-11,9 x 2.2-2.4 microns.

Did you know this species?

According available at me information, this species was described on Acer opaca from Switzerland and recently was found on Acer platanoides in Poland and on ? Cornus in France.

Waiting for your answer,
Alex
  • message #25276
  • message #25276
Paul LEROY, 03-10-2013 22:58
Re : Diatrype polycocca on Acer negundo ?
Hello Alex,

Apparemment cette Diatrypaceae pourrait plutôt être: Eutypella leprosa. Cette espèce est
très commune sur arbres feuillus variés et son entostroma blanc conduit plutôt à chercher
vers le genre Diatrype. L'appareil apical est J+ mais est souvent peu visible, même après
prétraitement KOH.
Cordialement
Paul
Alex Akulov, 06-10-2013 15:43
Alex Akulov
Re : Diatrype polycocca on Acer negundo ?
Paul, merci beaucoup pour vos conseils!