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30-08-2025 18:29

Joaquin Martin

Hi,I found this undetermined ascomycete on broadle

29-08-2025 19:04

Thomas Flammer

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

28-08-2025 17:24

Thomas Flammer

I know, that this is not the real topic of this fo

29-08-2025 05:16

Francois Guay Francois Guay

I think I may have found the teleomorph of Dendros

24-08-2025 21:59

Edmond POINTE Edmond POINTE

Bonsoir amis mycologues,Trouvé sur crottin de che

27-08-2025 12:02

Pavol Palo

Hello dear friendsI would like to ask for sharing

25-08-2025 17:37

François Freléchoux François Freléchoux

Bonjour,Nous avons trouvé samedi dernier à l'ét

24-08-2025 21:30

Ethan Crenson

Found yesterday in a New Jersey park.  An Orbilia

21-08-2025 18:09

Edmond POINTE Edmond POINTE

Bonjour Amis mycologues.Trouvé sur crottin de che

22-08-2025 18:10

Ethan Crenson

Hello everyone,  I found what I think might be P

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Dermateaceae s/ Cirsium palustre
Luc Bailly, 29-05-2010 21:35
Luc BaillyEn petits groupes sur une tige morte de Cirsium palustre, en compagnie de Leptosphaeria macrospora.
Apothécie sessile, -> 1-1.5 mm de diamètre, brun noirâtre extérieurement avec une marge poilue plus claire; hyménium gris foncé, tirant sur le bleuté, parfois le brunâtre.

Excip. ectal text. glob. à cellules brun foncé. Poils de la marge brunâtres, septés, 58-63 x4-5 µ.
Asques 8-sp, à crochets; spores bisériées. IKI bleu.
Spores hyalines, non septées, avec parfois quelques petites guttules, 6.5-10 x 1.5-2 µ.
Paraphyses réfringentes, cylindriques ou faiblement clavées au sommet, x 2.5-4 µ, ne réagissant pas dans le KOH.

J'avais émis l'hypothèse de Pyrenopeziza revincta. Votre avis?

Amitiés - LUC.
  • message #11667
Luc Bailly, 29-05-2010 21:36
Luc Bailly
Re:Dermateaceae s/ Cirsium palustre
Certaines fructifications sont plus nettement poilues.
  • message #11668
Luc Bailly, 29-05-2010 21:37
Luc Bailly
Re:Dermateaceae s/ Cirsium palustre
Asque
  • message #11669
Luc Bailly, 29-05-2010 21:37
Luc Bailly
Re:Dermateaceae s/ Cirsium palustre
Spores
  • message #11670
Luc Bailly, 29-05-2010 21:38
Luc Bailly
Re:Dermateaceae s/ Cirsium palustre
Paraphyses
  • message #11671
Luc Bailly, 29-05-2010 21:39
Luc Bailly
Re:Dermateaceae s/ Cirsium palustre
Poils de la marge.
  • message #11672
Hans-Otto Baral, 29-05-2010 22:17
Hans-Otto Baral
Re:Dermateaceae s/ Cirsium palustre
As far as I can see the paraphyses and hairs do not contain refringent vacuoles. Also the macro reminds me of a Pyrenopeziza rather than a Mollisia. P. revincta is a Mollisia, with VBs that react yellow in KOH.

Pyrenopeziza spec.

Zotto
Luc Bailly, 29-05-2010 23:12
Luc Bailly
Re:Dermateaceae s/ Cirsium palustre
Hm. I will check the refs I have about the Pyrenopeziza. By the way, I found something very similar from the sphagnum bog of Arcon in what I took back home from France. And also on Cirsium palustre.
Andreas Gminder, 08-06-2010 14:13
Andreas Gminder
Re:Dermateaceae s/ Cirsium palustre
Hello,

in my opinion this is the very common Pyrenopeziza escharodes s.l. (possibly still a collective species). Mollisia revincta never has such elongate cells, but in the opposite distinctly round cells, even the marginal cells are nearly round. NANNFELDT did describe some of the taxa around Mollisia atrata (which is Pyrenopeziza escharodes in my opinion), so may be you find something there.

best regards,
Andreas
Hans-Otto Baral, 08-06-2010 16:36
Hans-Otto Baral
Re:Dermateaceae s/ Cirsium palustre
Hi Andreas

I am surprized about your opinion on P. escharodes. I thought this is a species typically on Rubus, with a strongly white-fringed margin, and erumpent, see also Breitenbach pl. 281.

P. atrata is smooth at the margin and superficial. I attach both, the upper from Chemnitz on Rubus idaeus, the lower from Mecklenburger Seenplatte, on Epilobium hirsutum.

Of course, the question of the identity of the types may be obscure.

Zotto
  • message #11836
Luc Bailly, 08-06-2010 21:10
Luc Bailly
Re:Dermateaceae s/ Cirsium palustre
Hello Andreas, hello Zotto,

Thanks for your explanations. Do you have the complete ref for Nannfeldt's paper, so I could check if it's available on Cyberliber?

And indeed, Zotto, the upper photo is much closer to what I found. Although I didn't notice my sample on Cirsium might be erumpant.

Cheers - LUC.