07-03-2026 13:06
éric ROMERO
Bonjour tous, Sur cône d'épicea fortement imbu,
05-03-2026 16:30
François BartholomeeusenDear forum members, On the 2nd of February 2026,
06-03-2026 09:41
Alain GARDIENNET
Hi forum, I'm now looking for another reference c
05-03-2026 10:07
Hulda Caroline HolteHello, I found and collected this species growing
19-02-2026 17:49
Salvador Emilio JoseHola buenas tardes!! Necesito ayuda para la ident
Ascolichen on Blechnum?
Enrique Rubio,
03-09-2025 12:44
Hi 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.
Hans-Otto Baral,
03-09-2025 16:31
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
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.
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.
Franz Berger,
16-09-2025 11:20
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
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