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01-06-2025 09:37

Octospora
Charles Aron Charles Aron

Hi All, I found this Octospora growing with liver

05-07-2025 12:38

Pyrenomycetous fungi on dead Juniperus twig
Åge Oterhals

I found this pyrenomycetous fungi in pine forest o

04-07-2025 20:12

Black thready anamorph
Josep Torres Josep Torres

Hello.A fungus growing on the surface of a trunk o

20-06-2025 08:33

Ascomycete on a herbaceous stem.
Josep Torres Josep Torres

Hello.Small, blackish, mucronated surface grains s

28-06-2025 16:00

Salvia leaf parasite
Josep Torres Josep Torres

Hello.A tiny fungus shaped like globose black grai

04-07-2025 12:43

En tallo de herbaceas 1102
Castillo Joseba Castillo Joseba

me mandan el material seco de Galicia (España) 

03-07-2025 18:40

Melampsora ??? en Salix
Castillo Joseba Castillo Joseba

me mandas el material seco de Galicia (España) re

03-07-2025 20:08

Yellowish asco on submerged Larix needles
Francois Guay Francois Guay

I found this interesting yellowish asco growing on

01-07-2025 23:37

Help with a Pleosporal.
Josep Torres Josep Torres

Hello.A Pleosporal symbiotic organism located and

02-07-2025 17:26

hymenoscyphus albidus
Yanick BOULANGER

BonjourRécolté sur une brindille au fond d'un fo

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Nectrioid fungus on Cornus
Eduard Osieck, 18-12-2019 19:35
This nectrioid fungus was found on a dead Viburnum branch still attached to a fallen shrub. The dark yellow perithecia (KOH+, 0,5 mm only 0,25-0,3 mm visible) were largely embedded in the substratum. The 7-septate brownish spores were rather large: 68-72 x 11-13 um. Intact asci not seen.

All suggestions are welcome!

Eduard


Note: Substrate corrected 24/02/2022
  • message #60518
  • message #60518
  • message #60518
  • message #60518
  • message #60518
Martin Bemmann, 18-12-2019 19:59
Martin Bemmann
Re : Nectrioid fungus on Cornus
Hi Eduard,

this is Pseudotrichia viburnicula. Would be nice to have your collection details (date an location). This fungus is plurivorous, I think Cornus is a new host.


best regards

Martin

PS: if it is from the NL, there ia a collection from Steenbergen on Crataegus by Aafke Buijs in 2015.
Eduard Osieck, 18-12-2019 21:14
Re : Nectrioid fungus on Cornus
Hi Martin,

Thank you very much for the prompt identification as Trichonectria viburnicola! Clearly, I was misled by the yellow (top of the) perithecium and the positive KOH-reaction.


Little information about this species in the literature but the more on this site including your document of the Heidelberg collection and your message in 2013. Yes my collection was done in the Netherlands, so this is the second collection after the one in Steenbergen on Crataegus.


Cheers, Eduard