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Mot de passe perdu? S'inscrire

08-02-2009 20:36

Pablo Chacón Pablo Chacón

Forêt siliceo de Quercus suber, trouvée entre Er

08-02-2009 18:28

Edouard Evangelisti Edouard Evangelisti

Bonjour à tous ! Je voudrais soumettre à votr

07-02-2009 17:49

Alain GARDIENNET Alain GARDIENNET

Bonjour, Un collègue a fait une récolte étonn

06-02-2009 19:07

dominique cosnier

Je désire connaître le nom du genre et de l'espÃ

06-02-2009 09:19

Alain GARDIENNET Alain GARDIENNET

Bonjour, Encore des problèmes avec un diable de

05-02-2009 23:14

Alain GARDIENNET Alain GARDIENNET

I've made another recolt on Equisetum, E.arvense i

05-02-2009 19:40

VASILEIOS KAOUNAS

Found in forest of Quercus ilex

05-02-2009 19:03

Alain GARDIENNET Alain GARDIENNET

Bonjour à tous, Je voudrais inventorier toutes

05-02-2009 10:05

christian Deconchat

Bonjour à tous , Profitant du mauvais temps de

04-02-2009 19:50

Illescas Tomás Illescas Tomás

Estimados amigos: Este discomycete lo recolectÃ

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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