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04-02-2015 09:56

Cordyceps memorabilis
Rémi Péan

Bonjour,Je suis à la recherche de Pacioni & F

27-12-2014 19:16

En gramínea de zona dunar
Javier Ormad Javier Ormad

Hola a todos. Incrustadas en hoja de Digitaria san

08-12-2014 18:11

Hypoxylon ticinense - docu
Till Lohmeyer

Bonjour à tous, for a possible publication I nee

02-02-2015 20:11

Helvella semiobruta or helvellula?
Carmel Sammut

Hi,   I found a few specimens of a small Helvell

04-02-2015 20:08

Barrmaelia ?
Garcia Susana

Hi all,Found immersed perithecia to 250-400um diam

03-02-2015 12:23

Ascozonus
Salvador Tello

Hola a todos.Tengo unos Ascozonus creciendo en exc

04-02-2015 14:24

Coronophoral on Castanea branches
Enrique Rubio Enrique Rubio

Hi to all I need your help again with this pyreno

03-02-2015 20:51

Hymenoscyphus aff subferrugineus 210913 47
Miguel Ãngel Ribes Miguel Ángel Ribes

Hi againAnother Hymenoscyphus, 2-3 mm, stalked, on

03-02-2015 18:35

Hymenoscyphus aff rokebyensis 101114 10
Miguel Ãngel Ribes Miguel Ángel Ribes

Good eveningThis small white-pale yellow, 1-2 mm,

03-02-2015 18:17

Peritecios en Tamarix
Blasco Rafael Blasco Rafael

Hola, TENGO ESTAS Pequeñas Muestras Recogidas en

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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
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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