30-04-2024 16:22
François BartholomeeusenDear forum members,On April 25 2024, I found one f
03-05-2024 18:04
Riet van OostenHello, Found by Laurens van der Linde on Rubus fr
01-05-2024 23:22
Ethan CrensonHi all, Found late last week in a New York City p
29-04-2024 21:32
Robin IsakssonHi! Found in Sweden. Ascomata with haris, se
01-05-2024 12:54
F. JAVIER BALDA JAUREGUIHello, everyone.An idea for this pyreno, I found u
30-04-2024 19:43
Gernot FriebesHi!We observed this hyphomycete growing between le
29-04-2024 21:51
Mathias HassHi everyone, Found on attached branches of top pa
Psilachnum-like
Marc Detollenaere,
17-02-2024 07:15
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
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