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28-11-2025 16:45

Nogueira Héctor

November 23, 2025 Requejo de Sanabria (León) SPAI

25-11-2025 14:24

Thomas Læssøe

https://svampe.databasen.org/observations/10490522

17-09-2025 10:50

Heather Merrylees

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

27-11-2025 15:41

Thomas Læssøe

Spores brownish, typically 4-celled; 26.8 x 2.4;

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

27-11-2025 11:31

Thomas Læssøe

Collectors notes: Immersed ascomata, erumpent thro

23-09-2025 13:31

Thomas Læssøe

https://svampe.databasen.org/observations/10534623

26-11-2025 18:13

Jason Karakehian Jason Karakehian

The entire run of Mycotaxon is now available throu

21-11-2025 15:22

Vasileios Kaounas Vasileios Kaounas

Found in moss, forest with Pinus halepensis. Dime

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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