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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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Ascolichen on Blechnum?
Enrique Rubio, 03-09-2025 12:44
Enrique RubioHi to somebody.

I would like to know your opinion on these apothecium-like, gregarious, whitish, pubescent, briefly stipitate fungi, up to 200 microns in height and 150-160 microns in width, which were growing on Blechnum spicant fronds on a quartzite wall that was oozing water.
The asci are bitunicate and the whole structure appears dextrinoid, as only the medulla of the fruiting body appears to turn slightly blue in IKI after KOH-pretreatment. Peculiar paraphyses with a highly refractive content can be seen, and perhaps also a pilosity formed by similar elements, although I have not been able to make a vertical section of the ascoma that would give me a good idea of the whole. Nor have I been able to clearly observe a possible thallus at the base of the stipe base.
Could this be an ascolychen?
Thank you very much for your ideas.

 

  • message #83421
  • message #83421
  • message #83421
Hans-Otto Baral, 03-09-2025 16:31
Hans-Otto Baral
Re : Ascolichen on Blechnum?
This must be Vezdaea stipitata (Vezdaeaceae). You had it already some years ago (2022?) on a ?liverwort.

The red ascus reaction is hemiamyloid, not dextrinoid (in MLZ without KOH you would get nothing).

I was unaware of such prominent VBs in Lecanorales, staining deep red-brown in IKI. Very probably the family is misplaced there. Available DNA does not give a clear hint on their relationship. Syllabus gives it as Vezdaeales in Xylonomycetes while in the Outline 2024 it is Vezdaeales in Pezizomycetes incertae sedis.
Enrique Rubio, 04-09-2025 12:02
Enrique Rubio
Re : Ascolichen on Blechnum?
Hi Zotto.
You're right. It's the same one you identified for me years ago, although this time the blue reaction of the interascale elements is much less intense.
Thank you again.
  • message #83424
Franz Berger, 16-09-2025 11:20
Franz Berger
Re : Ascolichen on Blechnum?
More text can be found in Poelt & Vezda 1977: Bestimmungsschlüssel europäischer Flechten. - ergänzungsheft 1 . Cramer Vaduz.
With remarks like: "Paraphysen spärlich bis schwierig zu erkennen" - which is in contrast to the images.
and: Asci amyloid, mit jung deutlich amyloidem Tholus. Sporen 1-septate.

Another remark: genus certaily contains more species.

Regards: Franz