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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

22-04-2024 11:52

Zuzana Sochorová (Egertová) Zuzana Sochorová (Egertová)

Hello,I made a loan of a collection of Microstoma

11-01-2022 16:36

Jason Karakehian Jason Karakehian

Hi does anyone have a digital copy of Raitviir A (

22-04-2024 08:54

Rafael Cabral

Bonjour à toutes et tous, Quelqu'un pourrait-il

22-04-2024 20:38

Miguel Ãngel Ribes Miguel Ángel Ribes

Good afternoon.Does anyone know this anamorph?It g

21-04-2024 14:29

B Shelbourne B Shelbourne

• Genus Brunnipila: Distinct macro and habitat,

19-04-2024 14:28

B Shelbourne B Shelbourne

Cudoniella tenuispora: Distinctive macro and habit

20-04-2024 16:02

Michel Hairaud Michel Hairaud

Bonjour,On me fait part, pour diffusion d une list

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Psilachnum-like
Marc Detollenaere, 17-02-2024 07:15
Marc DetollenaereDear forum,

On debarked Pinus I found some small discs with the looks of Hyaloscypha. Asci were 8-spored , 45x6.7µ. Spores were hyalines, scutullate 8.5x2.8µ and contained several small guttules.Asci were IKI positive.Hairs looked cylindric to me with glassy aspect, 40-50µ, not tapering.
The only genus that was close with Nordic Macromycetes I was Psilachnum does this does not occur on wood. 
Any help would be appreciated.

Marc
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Hans-Otto Baral, 17-02-2024 09:44
Hans-Otto Baral
Re : Psilachnum-like
Possible is the group of Psilocistella quercina and Resinoscypha (Arachnopeziza) variepilosa, which are not clearly solved.
Kosonen Timo, 17-02-2024 11:08
Kosonen Timo
Re : Psilachnum-like
Hi,

These hyaloscyphoids with multiseptate thinwalled hairs are really not solved yet. Resinoscypha is an option, check with Cotton blue for cyanophilous substance inside the hairs. Psilocistella quercina comes close (morphology / phylogenetics), but is not conspecific with R. variepilosa. The thing is that there are others as well .. ! 

Resinoscypha (variepilosa) is fairly common in old growth forests (Picea especially) and the morphology is variable: young fruitbodies have mostly hairs that look like "pillars", distinctly wider than in the more mature fruitbodies where the proportions are more like in this sample (wether it is a Resinoscypha or not) and as in our recent drawings (Kosonen et al 2020). I was first sure that these are different species, but vast testing /sequencing proved otherwise. R. monoseptata I have not observed live.

Timo
Michel Hairaud, 17-02-2024 12:34
Michel Hairaud
Re : Psilachnum-like
Hi everyone, 
I also thought P. quercina has similar characters to this collection, but could it actually be found on Pinus ?  

Amitiés Michel
Marc Detollenaere, 17-02-2024 14:29
Marc Detollenaere
Re : Psilachnum-like
Thanks to all for the response.
I examined some young fruitbodies as Timo asked. The hairs look similar to me.

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Marc Detollenaere, 17-02-2024 14:30
Marc Detollenaere
Re : Psilachnum-like
Cotton blue
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Kosonen Timo, 18-02-2024 09:48
Kosonen Timo
Re : Psilachnum-like
Sorry, I can't make up my mind on this one. Resinoscypha has also occasional amyloid inclusions. You could check those (no MLZ/IKI slides there right?).

It looks like a handsome sample and if you have a chance to send it to Turku or sequence otherwise that would be lovely. ...I have received a number of beautiful samples through AscoFrance and the majority of them are still in the publication pipeline, so I am almost embarassed to ask. but this one could maybe make it faster, just working on these specifically. :-)

Timo
Marc Detollenaere, 18-02-2024 18:34
Marc Detollenaere
Re : Psilachnum-like
Timo,

If you give me your address, I will sent you the collection this week. In fresh state or dried?
marc.dt@skynet.be

Marc