Hi Gernot,

Of course you have seen that anything fits within Hysteriales. It's a very interesting fungus.

But have you looked towards Hysteropatella ? How are ascomatas when they are moist?

Alain

I don't know this genus, but perhaps you will go to the solution with the paper : http://www.mycosphere.org/pdf/Mycosphere_6_3_7.pdf

Alain

I am very interested in this fungus!
3 times I have collected an asco on bark Pines sylvestris which might be the same as this one. So far I have called it cf Poetschia cratincola. It do not fit the original description of Karschia cratincola very well, so even the genus may be wrong?

Ascospores: (25,0) 28,1 – 29,8 (32,5) x (9,1) 9,5 -10,8 (12,4) µm
Asci: (4?) 8-spored, (53) 58.4 - 77.8 (85.4) × (20.6) 22.4 - 31.1 (31.4) µm

Best wishes,
Per

No, I do not have Kutorga & Hawksworth 1997, is it on the internet?
I've read a key on MycokeyDK: Diverse småfamilier (Ascocorticiaceae, Gelatinodiscaceae, Patellariaceae, Odontotremaceae, Ostropaceae, Triblidiaceae and unplaced genera) http://www.mycokey.com/MycokeyDK/DKkeysPDFs/DiverseSkiver.pdf The desription of Poetschia buellioides there fit quite well, but it supposed to grow on broadleaved trees? P. cratincola is fund on broadleaves trees and conifers but have bigger spores.

I think it is very similar to your photos, Björn, of P. buellioides, The shape of the asci may depend on how hard you press the glass on the slide? Here is another picture of an asci.

Is it P. buellioides?

Best wishes,
Per

Gernot,

Have you observed young asci in Meltzer's reagent ?

Alain

PS : Minutisphaera is different.

Hi Gernot,

My question refers to the tholus Melzer + of young asci seen in the paper of Mycosphere.

About the pore, you can use chloral-lactophenol to detect them better.

Best wishes,

Alain

There is no blue reaction with either Lugol or Melzers. KOH + Lugol blue reaction is also emphasized by Kutorga & Hawksworth 1997, and then I think we can exclude P. buellioides.
I have not observed any germ pores, but as you write, Gernot, the spores are lighter in the ends. I do not have chloral-lactophenol. Today I observed that some of the spores look like they are germinating.

Best wishes,
Per

This fungus must be quite common in my district in Hedmark, Norway. Yesterday I collected some pieces of bark from a Pinus sylvestris near my home and there it was again! I have not studied Pinus-bark in particular, only some few bark pieces from 6 trees and this asco was found on 4 of them!

Best wishes,
Per

Voici 3 séquences du petit bijou:

MW045914
MZ206326
MZ411677

Joyeuses fêtes,

Guy