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12-05-2022 12:48

Viktorie Halasu Viktorie Halasu

Hello,last year (22.IX.) I've found this small red

16-05-2022 10:37

Castillo Joseba Castillo Joseba

Me mandan el materila de Galicia (España) recolec

15-05-2022 21:53

PASCAL DUBOC

Bonsoirun  morceau de feuillu pourri flottant.. c

06-05-2022 14:38

Laurent Bonneau Laurent Bonneau

Bonjour, j'ai trouvé ces Scutellinia dans le sud

09-05-2022 19:45

Elisabeth Stöckli

Bonsoir,Trouvé au sol sur tige morte de Rubus (94

14-05-2022 21:03

Enrique Rubio Enrique Rubio

These sessile or subsessile apothecia, more or les

08-05-2022 19:29

PASCAL DUBOC

Bonjourcolonie de disques (< 2 mm) gris à marg

12-05-2022 17:27

Edvin Johannesen Edvin Johannesen

Apothecia 0.2-0.5 mm in diam., slightly downy exci

17-01-2012 15:11

Jean-Claude Malaval Jean-Claude Malaval

Bonjour à tous,Fréquent sur différents supports

12-05-2022 10:31

Viktorie Halasu Viktorie Halasu

Hello, can I call this Coprotus disculus, or is i

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Nectriopsis rubefaciens?
Niek Schrier, 16-01-2022 18:26
Hi everyone,

I found a (lichenicolous?) fungi growing on thallus of Parmelina pastillifera. From a macro perspective, they look like Nectriopsis rubefaciens: small fuiting bodies wit perithecial hairs. However, the spores I sofar see in my samples are not corresponding with the spores of N. rubefaciens. The are 1-celled, 12,1 - 15,9 x 2,5-3,2 micrometer (1 div = 2,9 um).

Does anyone know what species this is? Thanks in advance!

Kind regards,
Niek Schrier
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Franz Berger, 16-01-2022 20:14
Franz Berger
Re : Nectriopsis rubefaciens?
The determination is correct! The actual name is Trichonectria r. now, due to some marginal discriminating features to Nectriopsis, (which has not been valuated by gen sequences until now).
To my knowledge, Parmelina pastillfiera is a new host lichen! 

Franz Berger
Niek Schrier, 16-01-2022 21:04
Re : Nectriopsis rubefaciens?
Thank you for the conformation Franz! So the spores can variate for this species? Or are these undeveloped 1-celled spores which become the 2-celled spores I see in documentation about this species? 
I also cound not find any note for this species hosting on Parmelina pastillfiera, but did read it hosts on Parmeliaceae, indicating it has a lot of hosts to choose from.

Niek Schrier
Franz Berger, 17-01-2022 14:21
Franz Berger
Re : Nectriopsis rubefaciens?
It was supposed by some authors, that T.rubefaciens could be an agglomerate of species. There are not so many hosts known till now, mostly it was found on Parmelia sulcata and P.saxatilis agg. I have a collection on Flavoparmelia caperata with much longer ascospores, affirming this hypothesis. And one on Parmelina tiliacea.
1-celled ascospores might be very young ones or mature  broken into 2 parts.  Irregularities can be observed sometimes, Not only in T.rubefaciens. 
Keep an eye on this specimen. I was informed recently, that a working group in Krakau  is starting to investigate  Hypocreales in nearer future. 
Yours
Franz