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18-07-2025 23:03

Josep Torres Josep Torres

Hello.Fruitings between 51 and 130 microns in tota

17-07-2025 11:55

Castillo Joseba Castillo Joseba

De ayer en bosque de hayas y abetos, en tieraEjemp

16-07-2025 17:34

Bernard Declercq Bernard Declercq

Hello,I have trouble distinguishing above mention

14-07-2025 11:20

Michel Hairaud Michel Hairaud

Bonjour, Voici une espèce de  (?) Hyaloscyphace

15-07-2025 13:27

Angel Pintos Angel Pintos

Hello, does anyone have access to the following ar

16-01-2023 21:31

Riet van Oosten Riet van Oosten

Hello, Nearby the find of Calycina claroflava on

14-07-2025 17:55

Yanick BOULANGER

BonjourAutre dossier laissé en suspendJe viens de

14-07-2025 11:17

Yanick BOULANGER

BonjourJ'ai un dossier Jackrogersella qui est rest

14-07-2025 15:52

Gernot Friebes

Hi,I wanted to share this collection on Rubus idae

14-07-2025 13:37

Gernot Friebes

Hi,do you think this collection could be R. ulmari

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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