01-02-2026 19:29
Nicolas Suberbielle
Bonjour, Marie-Rose D'Angelo (Société Mycologiq
31-01-2026 09:17
Marc Detollenaere
Dear Forum,On decorticated wood of Castanea,I foun
29-08-2025 05:16
Francois Guay
I think I may have found the teleomorph of Dendros
31-01-2026 10:22
Michel Hairaud
Bonjour, Cette hypocreale parasite en nombre les
30-01-2026 21:20
Arnold BüschlenBryocentria brongniartii und B. metzgeriae mit ihr
21-01-2026 16:32
Gernot FriebesHi,I need your help with some black dots on a lich
07-12-2015 14:17
Zugna Marino
Buon giorno a tutti, ad un primo momento, non ess
29-01-2026 10:04
Jean-Paul Priou
Bonjour à tous, Marcel LECOMTE président de L'A
Psilachnum-like
Marc Detollenaere,
17-02-2024 07:15
Dear 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
Hans-Otto Baral,
17-02-2024 09:44
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
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
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
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
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
Re : Psilachnum-like
Thanks to all for the response.
I examined some young fruitbodies as Timo asked. The hairs look similar to me.
I examined some young fruitbodies as Timo asked. The hairs look similar to me.
Marc Detollenaere,
17-02-2024 14:30
Re : Psilachnum-like
Cotton blue
Kosonen Timo,
18-02-2024 09:48
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
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
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
If you give me your address, I will sent you the collection this week. In fresh state or dried?
marc.dt@skynet.be
Marc