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03-02-2026 20:44

Zetti Mario

When I first saw this white mould on an Agaricus s

18-08-2025 15:07

Lothar Krieglsteiner Lothar Krieglsteiner

.. 20.7.25, in subarctic habital. The liverwort i

02-02-2026 21:46

Margot en Geert Vullings

On a barkless poplar branch, we found hairy discs

02-02-2026 14:55

Andgelo Mombert Andgelo Mombert

Bonjour,Sur thalle de Lobaria pulmonaria.Conidiome

02-02-2026 14:33

Andgelo Mombert Andgelo Mombert

Bonjour,Sur le thalle de Peltigera praetextata, ne

31-01-2026 10:22

Michel Hairaud Michel Hairaud

Bonjour, Cette hypocreale parasite en nombre les

02-02-2026 09:29

Bernard CLESSE Bernard CLESSE

Bonjour à toutes et tous,Pour cette récolte de 2

01-02-2026 19:29

Nicolas Suberbielle Nicolas Suberbielle

Bonjour, Marie-Rose D'Angelo (Société Mycologiq

30-01-2026 22:49

éric ROMERO éric ROMERO

Bonjour tous, Récolté dans les Vosges le 22/10/

31-01-2026 09:17

Marc Detollenaere Marc Detollenaere

Dear Forum,On decorticated wood of Castanea,I foun

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two Amicodisca
Kosonen Timo, 18-08-2016 10:13
Kosonen TimoHello,

I recently found a very typical "Amicodisca habitat" with slightly dried out water ponds with wet small/medium sized deciduous wood debris. Amicodisca virella was plentiful, but there was also one population of Amicodisca svrcekii. A. svrcekii with clearly less than 15 um long spores with small bipolar vacuoles, so no doubt there.

I am not that familiar with svrcekii so my question is that are the apos really this different in size? The big one is svrcekii and the small ones virella. On the same piece of wood in this case actually.

Timo
  • message #44430
Hans-Otto Baral, 18-08-2016 10:36
Hans-Otto Baral
Re : two Amicodisca
I measured in A svrcekii 0.2-0.35 mm on ?Sambucus and 1 mm on Qurecus, and in A. virella 0.2-0.55(-0.7) mm in two samples on Salix. So I think apo size is variable and not correlated.

From A. svrcekii on Quercus (HB 7022) I have an ITS sequence, while Stip has ITS and LSU from A. virella.They cluster in a clade with rather high distance. So it would be great if we could compare these data with yours if you succeed with this.

Strains of Amicodisca sp. in genBank appear to belong to a Dematioscypha.
Zotto

Kosonen Timo, 18-08-2016 11:09
Kosonen Timo
Re : two Amicodisca
all right. I kind of thought that they would still overlap sometimes, good to know that it has been recorded. Svrcekii shot spores well and virella too, so we should have material to compare to fairly soon. Also Stip send us A.virella previously and it was exctracted succesfully.

Timo
Jason Karakehian, 19-08-2016 20:51
Jason Karakehian
Re : two Amicodisca
I have a recent collection of A. svrcekii from Massachusetts, USA and one of A. virella from New Brunswick, Canada.  If someone is working on these and wants North American material you are welcome to them.
Kosonen Timo, 22-08-2016 11:45
Kosonen Timo
Re : two Amicodisca
Hello Jason,

I appreciate your offer! We (Karen Hansen, Seppo Huhtinen and I) are working on the systematics of "Hyaloscyphaceae". For now, our main focus is the "Hyaloscyphaceae sensu stricto". Arachnopezizas are getting some attention as well. American material is more than wellcome, it's all Eurasian so far - what a bias! I'll write you in lenght once back in the office.

Timo Kosonen
Kosonen Timo, 22-08-2016 11:45
Kosonen Timo
Re : two Amicodisca
Hello Jason,

I appreciate your offer! We (Karen Hansen, Seppo Huhtinen and I) are working on the systematics of "Hyaloscyphaceae". For now, our main focus is the "Hyaloscyphaceae sensu stricto". Arachnopezizas are getting some attention as well. American material is more than wellcome, it's all Eurasian so far - what a bias! I'll write you in lenght once back in the office.

Timo Kosonen
Jason Karakehian, 22-08-2016 13:51
Jason Karakehian
Re : two Amicodisca
Excellent.  I also have a few species of Arachnopeziza, Proliferodiscus and others if you would like to use them as well.