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03-09-2025 12:44

Enrique Rubio Enrique Rubio

Hi to somebody.I would like to know your opinion o

02-09-2025 10:28

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De ayer en madera muy podrida de haya (Fagus)A ver

31-08-2025 19:41

Enrique Rubio Enrique Rubio

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Thomas Læssøe

https://svampe.databasen.org/observations/10527903

31-08-2025 17:32

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01-09-2025 08:42

François Corhay

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31-08-2025 14:34

Thomas Flammer

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29-08-2025 19:04

Thomas Flammer

Spores 21.2 - 26.2 x 8.3 - 11.3 µm - Q: 2.20 - 2.

30-08-2025 18:29

Joaquin Martin

Hi,I found this undetermined ascomycete on broadle

28-08-2025 17:24

Thomas Flammer

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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.