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27-04-2026 20:52

Lothar Krieglsteiner Lothar Krieglsteiner

Found on hanging tiwg of Olea europaea in dried-ou

27-04-2026 18:48

Tony Moverley

Collected 23rd April 2026, Norfolk, EnglandSwarms

27-04-2026 17:41

Lothar Krieglsteiner Lothar Krieglsteiner

.. Algarve, same leaf than the last post. The con

27-04-2026 18:05

Lothar Krieglsteiner Lothar Krieglsteiner

... still attached at standing tree. The green con

27-04-2026 17:16

Lothar Krieglsteiner Lothar Krieglsteiner

.. Algarve, moist lying.The conidiomata look like

27-04-2026 12:54

Steve Clements

Bonjour. Ce petit champignon blanc résupiné et

27-04-2026 09:59

Pauline. Penna

Bonjour Can anyone advise me on these pycnidia fo

26-04-2026 21:08

William Slosse William Slosse

Several species of Ramularia occur on Rumex that I

22-04-2026 20:54

Enrique Rubio Enrique Rubio

Hi to everybody.This Pyrenopeziza grew in moist le

25-04-2026 11:34

Louis DENY

Bonjour forumdans la clé de Zotto, L. pudicellum

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Bryophilous Helotiales on Riccia cilifera
Koszka Attila, 03-02-2020 13:55
Dear Forum!
I could not identify this tiny rose discoid thing with no stipe.
Does anybody have some experience with this?
Thanks: Attila

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Hans-Otto Baral, 03-02-2020 15:01
Hans-Otto Baral
Re : Bryophilous Helotiales on Riccia cilifera
I do not know at all but there are a few questions:

Could you study the excipulum?

Iodine reaction seems negative?

Are there any paraphyses?

Do you still have it fresh and could make a water mount without pressing? Living asci and paraphyses could be helpful.

Your beforelast photo seems in water, do you also have a photo at high magnification showing the septum in vivo?

Size of apos is around 0.5 mm?

Zotto
Hans-Otto Baral, 05-02-2020 11:16
Hans-Otto Baral
Re : Bryophilous Helotiales on Riccia cilifera
I asked Peter Döbbeler and he suggested it could be Pachydisca amoena:


Only the spores are given shorter and no septum is mentioned.

Zotto
Koszka Attila, 06-02-2020 12:03
Re : Bryophilous Helotiales on Riccia cilifera
Sorry for this late ansver, but I was busy in this week.

Unfortunatelly I have not study the excipular part.

Iodine reaction seems mainly negative, but perhaps

wery weakly positive in some immature ascus.

Paraphyses is thin, long-cylidrical, with slightly broad an rounded tips, no pigment bodies.

I cannot have it in fresh, but the collection place where I found it, is exacly known.

The fruiting bodies is 0,1-0,5 mm, resting stalkless near the side and near the base side of the moss-leaves.


It seems to me, that the spores become septate only in the fully mature ascospores.

Attila
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Hans-Otto Baral, 06-02-2020 15:06
Hans-Otto Baral
Re : Bryophilous Helotiales on Riccia cilifera
Thanks for more details. The matter with spore septation requires living asci, it is frequently misunderstood or differently defined. My definition of maturity is: freshly ejected spores. Which they are you can only decide if you have living asci.