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02-12-2025 18:59

Malcolm  Greaves Malcolm Greaves

This pair of ascos 2.5cm across were on recently b

02-12-2025 19:25

Buckwheat Pete

Hello, can anyone identify this hairy fungus growi

02-12-2025 14:28

Mirek Gryc

527 / 5 000Hello everyoneThey grew on dead shoots

30-11-2025 12:53

Edvin Johannesen Edvin Johannesen

White short-stipitate apothecia found on thin twig

30-11-2025 10:47

William Slosse William Slosse

I recently found a collection of small Peziza sp.

27-11-2025 12:01

Thomas Læssøe

https://svampe.databasen.org/observations/10496727

27-11-2025 11:46

Thomas Læssøe

https://svampe.databasen.org/observations/10493918

17-09-2025 10:50

Heather Merrylees

Hi there!I am hoping for any advice on the identif

29-11-2025 08:40

Andreas Millinger Andreas Millinger

Hello,on a splintered part of a branch on the grou

28-11-2025 16:45

Nogueira Héctor

November 23, 2025 Requejo de Sanabria (León) SPAI

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Annulusmagnus?
Hans-Otto Baral, 28-08-2010 12:35
Hans-Otto BaralOn a Fagus log lying in mud of pond, soc. Orbilia luteorubella (Tübingen). Sp. *16.5-21 x 6-6.7 µm. Asci with striking inamyloid apical ring.

The log is flooded after heavy rain, and the mud permanently moist in drier times.

It reminds me of Annulusmagnus triseptatus but spores early turn brown.

Zotto
  • message #12657
Hans-Otto Baral, 28-08-2010 12:36
Hans-Otto Baral
Re:Annulusmagnus?
Micro
  • message #12658
Gernot Friebes, 28-08-2010 12:59
Re:Annulusmagnus?
maybe Ascitendus austriacus. This species should have delicately striate spores.

Best wishes,

Gernot
Alain GARDIENNET, 28-08-2010 13:31
Alain GARDIENNET
Re:Annulusmagnus?
I'm agree with Gernot.
Alain
Hans-Otto Baral, 28-08-2010 19:51
Hans-Otto Baral
Re:Annulusmagnus?
Thanks, I never heard of that genus, nor Ascolacicola where it was first described. Is that only known from the type collection??? Incredible to believe.

The asci are with (dead) 130-140 x 9-10 µm a bit short (protologue: 160-200 x 8.5-10.5). The spores are smooth, in my opinion, but the protologue says nothing of a striation. In any case, this fits quite well!

Was the species redescribed later? I do not have Campbell + Shearer 2004. Nothing is said on the spore guttules, as usually.

Zotto


Gernot Friebes, 28-08-2010 20:23
Re:Annulusmagnus?
here you can find Campbell & Shearer (2004):

http://www.mycologia.org/cgi/content/full/96/4/822

Best wishes,

Gernot
Hans-Otto Baral, 28-08-2010 21:46
Hans-Otto Baral
Re:Annulusmagnus?
I now found that the spores become partly distinctly longitudinally striate when I put them in Melzer! Thereby they shrink a bit from 6-6.7 to 5.6-6.5 µm. Here a pic in water (live)
  • message #12668
Hans-Otto Baral, 28-08-2010 21:50
Hans-Otto Baral
Re:Annulusmagnus?
Here in Melzer.

I did not yet read the Campbell article but I am surprized that they describe a new genus for every species... Has that any sense?

Zotto
  • message #12671
Guy Garcia, 29-08-2010 08:40
Re:Annulusmagnus?
Hi Zotto,
You can download the paper here
http://www.mycologia.org/cgi/reprint/96/4/822.pdf
Best, Guy