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06-09-2025 21:40

David Chapados David Chapados

Hi, Does somebody know the genus that has those b

07-09-2025 11:34

Zuzana Sochorová (Egertová) Zuzana Sochorová (Egertová)

Hello,I have identified this fungus as Hymenoscyph

02-09-2025 11:34

Thomas Læssøe

https://svampe.databasen.org/observations/10527903

05-09-2025 09:32

Nicolas VAN VOOREN Nicolas VAN VOOREN

Bonjour, hi everyone,Do you know where the fungari

07-09-2025 08:19

Josep Torres Josep Torres

Hello.Tiny pinkish discomycetes, photographed and

05-09-2025 18:53

Robin Isaksson Robin Isaksson

Hi! Spores 1 septate; 12-13 x 3um Hairs 35-75

03-09-2025 21:59

Philippe PELLICIER

La Léchère, Col de la Madeleine, alt 1970m, au s

04-09-2025 20:11

Åge Oterhals

Saccobolus on dear droppings. Can any of you confi

03-09-2025 12:44

Enrique Rubio Enrique Rubio

Hi to somebody.I would like to know your opinion o

02-09-2025 10:28

Castillo Joseba Castillo Joseba

De ayer en madera muy podrida de haya (Fagus)A ver

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Nectria with pale brown spores
Björn Wergen, 07-03-2012 11:09
Björn WergenHi all,

a few days ago I have found a small, single growing Nectria on old Quercus wood. It has 0,2-0,3 mm broad, bright red perithecia with protuding same-coloured ostiolus. 

The main interesting thing is that it has pale brown mature spores with verrucose ornamentation and a single septa. I had 3 other Nectria that day with similar but hyaline spores, differing in spore size and ornamentation. 

I did not see any conidia (or do the black stipes having a relation to the Nectria?)

Spores are 10,5-12,5x4-6µm, Asci 90-110x5-6µm.

regards,
björn
  • message #17657
  • message #17657
  • message #17657
Björn Wergen, 07-03-2012 11:58
Björn Wergen
Re : Nectria with pale brown spores
Hi Yan, do you mean the Cosmospora aff. magnusiana thread from Zotto? These findings were on Diatrype species, my was on wood associated by Protounguicularia barbata. Cosmospora seems to be unclear these days :/
Christian Lechat, 07-03-2012 16:19
Christian Lechat
Re : Nectria with pale brown spores
Dear Björn,
at present, several research teams are working with the "Cosmospora" in the world. It seems that there is numerous species in this group but we do not yet know well how to separate them.?
Yan is right, it is impossible to know what is your specimen without culture and molecular data. Jacques Fournier and I are working with "Cosmospora", as soon as we will have some results we will notify you.

Furthermore, I would like to study your collection, if you agree, you can send it to me

Regards,
Christian

Ascofrance
64, route de Chizé
79360 Villiers en Bois
France

Björn Wergen, 07-03-2012 22:27
Björn Wergen
Re : Nectria with pale brown spores
Hi Yan and Christian,

thanks.

@Christian: Of course I will send you. I have some other Nectria here, I will send them too, perhaps you can do something with them :)

regards,
björn
Christian Lechat, 07-03-2012 22:46
Christian Lechat
Re : Nectria with pale brown spores
Ok Björn,
I'm waiting for your sending

Christian