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31-01-2012 13:42

Björn Wergen Björn Wergen

Hi,today I have found a curious small pyrenomycete

30-01-2012 12:45

PASCAL DUBOC

Bjrj'aimerai savoir si Cudonia circinans et Cudoni

21-01-2012 00:23

Michel Hairaud Michel Hairaud

Bonjour à tous, Hi to all, Voici une récolte abo

29-01-2012 20:53

Björn Wergen Björn Wergen

Hi again,between Radulomyces confluens, Mollisia a

29-01-2012 01:24

Björn Wergen Björn Wergen

Hello,I think this is not the first time asking ab

29-01-2012 01:37

Björn Wergen Björn Wergen

Hidoes anybody know this nice hyphomycet? I rememb

04-01-2012 19:53

Alex Akulov Alex Akulov

Dear friendsI try to find some publications, devot

28-01-2012 00:06

Ridha EL MOKNI

Bonsoir Chers Mycologues,une idée sur ce petit Ba

27-01-2012 23:59

Ridha EL MOKNI

Bonsoir Chers mycologues,une idée sur ce petit ba

26-01-2012 11:14

Michel RIMBAUD

Bonjour,J'examine un petit disco hyalin-grisâtre,

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cf. Nectria
Zuzana Sochorová (Egertová), 13-09-2021 15:54
Zuzana Sochorová (Egertová)Hello,
while making a section of Scutellinia olivascens using the stereomicroscope, I noticed little scarlet nectrioid fungi growing nearby.
They are from the Czech Republic, from a locality in 180 m a.s.l., and were growing on tiny roots in a very wet place, close to a little pond (the most frequent tree in the locality is Salix). Apothecia grow in a group.

Ascospores distinctly warted, 1-septate, (14.9) 15.6 - 16 (16.2) × (6) 6.1 - 6.8 (6.9) µm, Q = 2.3-2.7
Me = 15.7 × 6.4 µm; Qe = 2.4


I used the key by Hirooka et al. 2012 (https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3310236/)


It leads me to the point 19, when one has to decide between N. australiensis (a bit smaller ascospores + known from Oceania) and N. noackiana (totally wrong spore size + known from Brazil). When I make a compromise and jump on „known from alpine regions" (instead of temperate to subtropical), I would end at N. berberidicola. But the substrate in my collection is not Berberis :-)
Therefore, I think I am probably searching in a wrong genus.
Could you give me an advice, please?
Thank you, Zuzana

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Zuzana Sochorová (Egertová), 13-09-2021 15:56
Zuzana Sochorová (Egertová)
Re : cf. Nectria
more photos
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Zuzana Sochorová (Egertová), 13-09-2021 17:15
Zuzana Sochorová (Egertová)
Re : cf. Nectria
Maybe Neonectria?
Zuzana Sochorová (Egertová), 13-09-2021 19:05
Zuzana Sochorová (Egertová)
Re : cf. Nectria
Two more photos.
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Christian Lechat, 13-09-2021 20:21
Christian Lechat
Re : cf. Nectria
Hi Zuzana,

your fungus could be Thelonectria veuillotiana or something similar

Christian
Zuzana Sochorová (Egertová), 13-09-2021 21:22
Zuzana Sochorová (Egertová)
Re : cf. Nectria
Hi Christian,
thank you very much!
It seems to be difficult to determine this fungus with certainty without cultivating or sequencing. According to this paper, the spores in my specimens are small for the true T. veullotiana, but species with a better fitting spore size are not known from Europe.
https://www.researchgate.net/publication/229015577_Multigene_phylogenetic_analyses_of_the_Thelonectria_coronata_and_T_veuillotiana_species_complexes#fullTextFileContent
Zuzana