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16-01-2022 18:26

Niek Schrier

Hi everyone,I found a (lichenicolous?) fungi growi

16-01-2022 22:08

Jonah Benningfield

Hello,I was hoping to get some feedback on this As

16-01-2022 18:00

Riet van Oosten Riet van Oosten

Hello, Found 14-01-2022 on a dead stem of Rubus f

09-01-2022 18:56

William Slosse William Slosse

Good evening every one,On 07/01/2022 I found a gro

27-09-2015 13:03

Elisabeth Stöckli

Bonjour,Trouvé sur pives de pinus (tourbière);Ap

09-01-2022 08:14

Michel Hairaud Michel Hairaud

Bonjour,Je me fais le porte parole de ses amis les

13-01-2022 16:33

Juuso Äikäs

An old Pyrenopeziza finding from my archive:These

13-01-2022 14:48

Juuso Äikäs

On August 2020 I found a group of Trichophaea hybr

11-01-2022 00:31

Valencia Lopez Francisco Javier

Hola amigos Tengo muchas dudas con esta especie, r

11-01-2022 14:34

Camille Mertens

Hello all.Hairy asco found a week ago on half rott

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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.