Nectrioid fungus on Cornus - Forum ASCOFrance

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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

Martin Bemmann, 18-12-2019 19:59

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.

see: http://www.ascofrance.com/search_forum/23643

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

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