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29-08-2025 05:16

Teleomorph of Dendrostilbella smaragdina ?
Francois Guay Francois Guay

I think I may have found the teleomorph of Dendros

29-08-2025 19:04

Yellow apothecia on cow dung without hairs - Cheilymenia spec.?
Thomas Flammer

Spores 21.2 - 26.2 x 8.3 - 11.3 µm - Q: 2.20 - 2.

28-08-2025 17:24

Literatur request J. Berthier, Typhula
Thomas Flammer

I know, that this is not the real topic of this fo

24-08-2025 21:59

Podospora
Edmond POINTE Edmond POINTE

Bonsoir amis mycologues,Trouvé sur crottin de che

27-08-2025 12:02

On Abies alba macroscopically similar to Propolis sp.
Pavol Palo

Hello dear friendsI would like to ask for sharing

25-08-2025 17:37

Petit asco indéterminé
François Freléchoux François Freléchoux

Bonjour,Nous avons trouvé samedi dernier à l'ét

24-08-2025 21:30

Orbilia dryadum ?
Ethan Crenson

Found yesterday in a New Jersey park.  An Orbilia

21-08-2025 18:09

Semble Thecotheus
Edmond POINTE Edmond POINTE

Bonjour Amis mycologues.Trouvé sur crottin de che

22-08-2025 18:10

Protocrea ?
Ethan Crenson

Hello everyone,  I found what I think might be P

20-08-2025 19:04

Adelphella babingtonii - lacking much brown pigment
Ethan Crenson

Hello, This asco was found on the same wood as my

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Diaporthe or related? On dogwood twig.
Edvin Johannesen, 04-06-2020 19:30
Edvin Johannesen
I did not draw the black lines here - the fungus did!

The perithecia are quite deeply embedded, sometimes more than one, but few, in a group.  Spores very large, but variable in length; 35-65 x 8-10 microns, 1-septate, slightly constricted at the septum, filled with variably sized droplet, bearing ca. 4 microns long hyaline appendages at the poles.  Asci irregularly biseriate. Ascus apparatus ring-shaped. Spores measured an photographed in water. Phase contrast used in order to see the spore appendages.

Are we in Diaporthaceae (Diaporthe) or Gnomoniaceae (Pseudodiaporthe) or somewhere else?

Thanks in advance.
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Edvin Johannesen, 04-06-2020 19:31
Edvin Johannesen
Re : Diaporthe or related? On dogwood twig.
Some microscopic details.
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Edvin Johannesen, 04-06-2020 19:33
Edvin Johannesen
Re : Diaporthe or related? On dogwood twig.
The dogwood species is Swida sericea (=Cornus stolonifera).
Eduard Osieck, 08-06-2020 22:25
Re : Diaporthe or related? On dogwood twig.
Hi Edvin
Compare with Diaporthe tessella which species has such large, appendaged spores and stromatic line. Nice drawing of spores and stroma in Wehmeyer 1933 (Diaporthe world monograph). A link to this book is given on www.verspreidingsatlas.nl/0740020 (see tab Artikelen).
Eduard
Edvin Johannesen, 08-06-2020 22:28
Edvin Johannesen
Re : Diaporthe or related? On dogwood twig.
Thanks a lot, Eduard - I will check :)