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30-03-2026 12:03

William Slosse William Slosse

Hello all,On 27/03/26, in Kraaiveld in Wingene (Be

28-03-2026 17:41

Louis DENY

Bonjour forum,Mollisia trouvée sur tige de Molini

30-03-2026 09:53

Yanick BOULANGER

BonjourVoici des petites fructifications poilues s

25-03-2026 10:35

Hulda Caroline Holte

Hello,I collected this species growing on a dead b

27-03-2026 10:47

Ã…ge Oterhals

I have tentatively identified this Stictis to S. f

28-03-2026 07:55

Marc Detollenaere Marc Detollenaere

Hello everybody,Yesterday I found a number of whit

26-03-2026 15:31

Ã…ke Widgren Ã…ke Widgren

Hello,I found this one in October last year, on r

27-03-2026 15:23

Gernot Friebes

Hi,this Trichopezizella deviates from typical T. b

27-03-2026 15:08

Gernot Friebes

Hi,I'm looking for help with this coelomycete on C

24-03-2026 21:37

Elisabeth Stöckli

Bonsoir,Sur bois (tronc) très pourri de conifère

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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