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29-04-2024 21:32

Robin Isaksson Robin Isaksson

Hi! Found in Sweden. Ascomata with haris, se

29-04-2024 21:51

Mathias Hass Mathias Hass

Hi everyone, Found on attached branches of top pa

28-04-2024 18:05

Bernard CLESSE Bernard CLESSE

Bonsoir à toutes et tous,J'ai trouvé ce matin ce

28-04-2024 13:30

Juuso Äikäs

On Friday I found these pale, hairy little discos

24-03-2024 08:27

Thierry Blondelle Thierry Blondelle

HiOn Hedera helix fallen branchEcological habitat:

26-04-2024 10:07

Mathias Hass Mathias Hass

Hello, Does anyone know what this is? Found on J

24-04-2024 21:54

éric ROMERO éric ROMERO

Bonjour, J'ai trouvé ce Lasiobolus sur laissées

23-04-2024 15:18

Lothar Krieglsteiner Lothar Krieglsteiner

... but likely a basidiomycete. I hope it is o.k.

23-04-2024 13:17

Edouard Evangelisti Edouard Evangelisti

Bonjour à tous, Je viens de récolter ce que je

23-04-2024 21:49

Ethan Crenson

Hello all, A friend recently found this orange as

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Odontotrema or something strange?
Yatsiuk Iryna, 18-10-2010 16:18
Yatsiuk IrynaHello, everybody!
This one was collected in 2008 year on bark of Acer tataricum. Actually, I don't have credible ideas, what this can be:(
Dimensions:
Apothecia: up to 0,5 mm in diam, 0,4*0,8 mm.
Sporesize: 15,3-17,8* 5,3-6,3 um, mature become 1-septate
Asci: 90-100*10-12 um
Apical pore blued in IKI
Pleace, help!

Thank you,
Irina
  • message #13033
Hans-Otto Baral, 18-10-2010 16:40
Hans-Otto Baral
Re:Odontotrema or something strange?
Here you should show us the IKI-stained apical ring in big resolution. Presently I have no idea.

Also a median section through the apothecia showing the excipular cells (perhaps in KOH) would be helpful.

Zotto
Martin Bemmann, 18-10-2010 16:58
Martin Bemmann
Re:Odontotrema or something strange?
Reminds me on Rhizodiscina lignyota in dry state.

Best regards,

Martin
Quijada Luis, 18-10-2010 23:05
Re:Odontotrema or something strange?
Dear Martin, Is unitunicate or bitunicate? Macromorphology and characters for me resembles to Rhytidysteron, but its a Patellariaceae. You could see the paper: Murillo, C. et al. 2009. Molecular data indicate that Rhytidhysteron rufulum (ascomycetes, Patellariales) in Costa Rica consists of four distinct lineages corroborated by morphological and chemical characters. Mycological Research 113: 405-416. Rhizodiscina lignyota has brown and inequilateral spores, and the base of asci are narrow and long. I hope you find it helpfull. Best wishes Luis.
Martin Bemmann, 18-10-2010 23:35
Martin Bemmann
Re:Odontotrema or something strange?
Hi Luis,

I don't have seen Rhytidisteron and Odontotrema either. I am looking forward to some new micros of Irina for further discussion. Rhizodicina was just a spontaneous guess...

Best regards,

Martin
Yatsiuk Iryna, 19-10-2010 13:34
Yatsiuk Iryna
Re:Odontotrema or something strange?
Dear Zotto and Martin,

Thank you for your ideas.
I'll post photos of median section through the apothecia and apical pore as soon as I can.

Irina

Alain GARDIENNET, 19-10-2010 14:22
Alain GARDIENNET
Re:Odontotrema or something strange?
Bonjour à tous,
For Luis ; now the genus Rhytidhysteron is now in Hysteriaceae (See Boehm and al. in a recent SIM). Itsn't one of them here.
I don't think it could be Rhizodiscina too, as Luis. Here we need a median vertical section, as Zotto said, and perhaps more precisions about ascospores.
Alain

NC NC, 19-10-2010 19:09
Re:Odontotrema or something strange?
Here is some more ascospores (septate and non-septate) and stained apical pore.
Actually, staining was rather weak.
Unfortunately I have no possibility to make photos with better resolution:(

Placed in KOH 3 %, ascocarps began to extract bright cherry-colored pigment!
I'll tried to make a section, but it was all dark because of this pigment.

Irina
  • message #13069
Yatsiuk Iryna, 19-10-2010 19:15
Yatsiuk Iryna
Re:Odontotrema or something strange?
Here are some ascospores (septate and non-septate from the same specimen) and apical pore in IKI.
Actually, staining was rather weak.
Unfortunately I haven't opportunity to make photos with better resolution:(
Being placed in KOH 3%, ascocarps begin to extract bright cherry-colored pigment!
I also tried to do a cross-section.

Irina
  • message #13070
Hans-Otto Baral, 19-10-2010 20:46
Hans-Otto Baral
Re:Odontotrema or something strange?
Did you see the red pigment extruding into the medium? My idea is a Dermea (which shows such a strong iononmidotic reaction in KOH), but on Acer I do not know if this is possible.

Zotto
Alain GARDIENNET, 19-10-2010 21:58
Alain GARDIENNET
Re:Odontotrema or something strange?
My ideas turned around Dermea, or other Dermataceae, too. But without concrete idea.
Alain
Yatsiuk Iryna, 20-10-2010 13:07
Yatsiuk Iryna
Re:Odontotrema or something strange?
Dear Zotto, Alain, Martin,

Yes, I saw bright red pigment.
Maybe, collector made a mistake concerning substrate...
Is anyone interested in this specimen (from Ukraine, Kharkiv district)?
I can send doubles to everyone who will have time to take a look on them.

Irina
Alex Akulov, 24-10-2010 17:51
Alex Akulov
Re:Odontotrema or something strange?
Possible, it is immature Dermea acerina?

Alex
Hans-Otto Baral, 24-10-2010 18:44
Hans-Otto Baral
Re:Odontotrema or something strange?
Yes, this is a good idea! I know this species only from Groves 1938. I do not know whether it has a conspicuous pycnidial anamorph.

Zotto
Alex Akulov, 24-10-2010 19:48
Alex Akulov
Re:Odontotrema or something strange?
I have some samples of this species from Ukraine (both anamorph and teleomorph).
Some of them were tested by Dr. Popov from Russia.
If you interested, I can send you duplicates for your collection.

Alex.
Hans-Otto Baral, 24-10-2010 22:22
Hans-Otto Baral
Re:Odontotrema or something strange?
Hi Alex

This would be surely great to have a look at them. But even more happy I would be if you have macro- and microillustrations of that species. Do you?

Zotto