Accès membres

Mot de passe perdu? S'inscrire

03-02-2026 20:44

Zetti Mario

When I first saw this white mould on an Agaricus s

18-08-2025 15:07

Lothar Krieglsteiner Lothar Krieglsteiner

.. 20.7.25, in subarctic habital. The liverwort i

02-02-2026 21:46

Margot en Geert Vullings

On a barkless poplar branch, we found hairy discs

02-02-2026 14:55

Andgelo Mombert Andgelo Mombert

Bonjour,Sur thalle de Lobaria pulmonaria.Conidiome

02-02-2026 14:33

Andgelo Mombert Andgelo Mombert

Bonjour,Sur le thalle de Peltigera praetextata, ne

31-01-2026 10:22

Michel Hairaud Michel Hairaud

Bonjour, Cette hypocreale parasite en nombre les

02-02-2026 09:29

Bernard CLESSE Bernard CLESSE

Bonjour à toutes et tous,Pour cette récolte de 2

01-02-2026 19:29

Nicolas Suberbielle Nicolas Suberbielle

Bonjour, Marie-Rose D'Angelo (Société Mycologiq

30-01-2026 22:49

éric ROMERO éric ROMERO

Bonjour tous, Récolté dans les Vosges le 22/10/

31-01-2026 09:17

Marc Detollenaere Marc Detollenaere

Dear Forum,On decorticated wood of Castanea,I foun

« < 1 2 3 4 5 > »
ascomata with dark hymenium and red-brown excipulum?
François Bartholomeeusen, 21-10-2021 15:44
Dear forum members,

On a rotten piece of wood I found among several fruiting bodies of Mollisia melaleuca other ascomata of which the hymenium is blue-black and the excipulum red-brown.
Plenty of paraphyses and only a few asci. 12 days after the find still few asci and mature spores;
- Diameter ascomata < 1.5 mm;
- Spores: ellipsoid with two drops: 8.4 - 10.5 × 4.3 - 5.2 µm, Q = 1.9 - 2.4;
- Asci: clavate, with croziers, IKI (+/- no reaction) in Melzer + (blue): 120 x 7.7 µm;
- Paraphyses: hyaline with dark top, filiform, apex round and a bit swollen, longer than asci;
- Textura globulosa and ectal excipulum more hyaline and textura intricata.

Macroscopically similar to Pattelariopsis atrovinosa but the spores are different.
Who can help me with the identification?

Thank you very much in advance,

François Bartholomeeusen
  • message #70394
  • message #70394
  • message #70394
  • message #70394
  • message #70394
  • message #70394
  • message #70394
  • message #70394
Viktorie Halasu, 21-10-2021 17:07
Viktorie Halasu
Re : ascomata with dark hymenium and red-brown excipulum?
Hello,
compare with Ascocoryne lilacina.
Viktorie
Hans-Otto Baral, 21-10-2021 17:15
Hans-Otto Baral
Re : ascomata with dark hymenium and red-brown excipulum?
Yes, this is the solution. But IKI gives the reaction also. Perhaps the reagent is too old? Previously called Ombrophila lilacina.
François Bartholomeeusen, 21-10-2021 20:57
Re : ascomata with dark hymenium and red-brown excipulum?

Good evening Viktorie and Zotto,

During my search, I saw a picture of fully-grown Ascocoryne lilacina, but it differed so much from my find that I ignored it.
Thank you very much for your quick reply!

Kind Regards,

François
Hans-Otto Baral, 21-10-2021 21:57
Hans-Otto Baral
Re : ascomata with dark hymenium and red-brown excipulum?
You have the form with an olive disc. Usually O. lilacina has a lilaceous disc but it seems the olive pigment that occurs in the VBs in some samples has no relevance.