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08-04-2020 11:36

Garcia Susana

Hola, Pseudotecios muy pequeños, unos 120um de d

04-04-2020 19:03

Andgelo Mombert

Bonsoir, Sur branche morte aérienne de Crataegus

10-04-2020 10:17

Andgelo Mombert

Bonjour, Sur branche morte de Salix sp. en situat

09-04-2020 19:51

Miguel Ãngel Ribes Miguel Ángel Ribes

Good evening guysI found this small apos (1,5-2 mm

05-04-2020 18:59

Andgelo Mombert

Bonsoir, Un sympathique pyréno observé sur Vibu

07-04-2020 11:03

Malcolm  Greaves Malcolm Greaves

Has anyone got a key to Pososordaria or informatio

07-04-2020 23:11

BERNARD CLESSE BERNARD CLESSE

Bonsoir à toutes et à tous,Trouvé hier ce que j

08-04-2020 20:19

Enrique Rubio Enrique Rubio

Hi to everyoneThis fungus forms very small ascomat

08-04-2020 16:14

Edmond POINTE Edmond POINTE

Bonjour tout le monde,Trouvé sur crotte de lièvr

07-04-2020 17:56

Mirek Gryc

Hello allCan anyone help me identify this unknown

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Octospora rubens, Octospora rustica?
Riet van Oosten, 16-02-2020 15:25
Riet van Oosten
Hello,

Just a try :-)

Found by Rene Hoogenboom, Febr. 2020, The Netherlands (coastal area, Noordhollands duinreservaat). The moss species is Ceratodon.

Fruitbody: about 2 mm

Asci, lenght: (194.6-)221.4-226.7 µm

Spore size: 14.7-15.0 x 10.3-10.7 µm

Greetings, Riet
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Charles Aron, 16-02-2020 16:44
Charles Aron
Re : Octospora rubens?

Hi,


I would suggest that you have Octospora rustica-your spore dimensions fit nicely with that species. I have recently collected O. rubens from burnt ground and the spores were 16-19 x 11.5-13 and also the paraphyses tips were a bit more swollen. I've used Microfungi on Land Plants by Ellis and Ellis which may be slightly dated.


Regards,


Charles.

Riet van Oosten, 16-02-2020 17:10
Riet van Oosten
Re : Octospora rubens?
Thank you very much for your reaction Charles!
Marcel Vega, 16-02-2020 19:47
Re : Octospora rubens, Octospora rustica?
Hi dear Riet,
I agree with your determination.
Beside the colour of the apothecia, hence the species name, apos of O. rubens often (but not always) show a distinct margin whereas O. rustica does not. But, more important, on your nice pics of live material one can observe the vacuolar bodies in the paraphyses -a feature paraphyses of O. rustica do not have.
Here's some more info in case you were interested:
https://www.repository.naturalis.nl/document/569807
Cheers,
Marcel
Zuzana Sochorová (Egertová), 16-02-2020 20:28
Zuzana Sochorová (Egertová)
Re : Octospora rubens, Octospora rustica?
Hi Riet, Charles and Marcel, 
yes, the content of paraphyses as well as colour of apothecia fit well Octospora rubens. It's nicely illustrated by Billekens. But what about the structure of ectal excipulum? In this aspect Riet's find is definitely more similar to O. rustica, at least when comparing with the illustrations from the paper mentioned above. 
I also have a find from Olomouc combining paraphyses with VBs + ectal excipulum formed by textura globulosa-angularis. Zuzana 
Riet van Oosten, 16-02-2020 21:04
Riet van Oosten
Re : Octospora rubens, Octospora rustica?
Dear Charles, Marcel and Zuzana
Thank you for your help and information!
Peter Püwert, 16-02-2020 21:10
Peter Püwert
Re : Octospora rubens, Octospora rustica?
Hi, I can't contribute to the structure of the excipulum, but here two very old microfoto and a link to an interest website.

Greetings Peter.

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Riet van Oosten, 16-02-2020 21:26
Riet van Oosten
Re : Octospora rubens, Octospora rustica?
Thank you for the link and your photos Peter! 
With the names of Zuzana and Marcel on the first page!
Charles Aron, 16-02-2020 22:07
Charles Aron
Re : Octospora rubens, Octospora rustica?

Hi',


In the light of all this additional information I would concede that O. rubens is much more likely and that what I had found (apothecia more orange and paraphyses lacking vacuoles) fits much better with O. rustica.


Regards,


Charles.

Riet van Oosten, 17-02-2020 12:29
Riet van Oosten
Re : Octospora rubens, Octospora rustica?
Hi,
Thanks again for all your help and info!
If there are no objections I'll name this find Octospora rubens.
Greetings,
Riet