20-05-2025 22:15
Francois Guay
I found this ascomycete at the base of a dead fern
30-05-2025 17:54
Louis DENYHello forum!Touvé près de Belfort, altitude 350m
31-05-2025 00:51
Ethan CrensonHello, Last week in New York City this Orbilia wa
30-05-2025 17:55
Louis DENYHello forum!Touvé près de Belfort, altitude 350m
30-05-2025 12:53
Gernot FriebesHi,I'm struggling to find a name for this species.
28-05-2025 21:19
Terje KristiansenThe rose is intertwined with black elderberry.Prob
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.
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
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
Thank you for your help and information!
With the names of Zuzana and Marcel on the first page!
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.
Thanks again for all your help and info!
If there are no objections I'll name this find Octospora rubens.
Greetings,
Riet