Accès membres

Mot de passe perdu? S'inscrire

23-12-2025 11:27

Louis DENY

bonjour forum,sur débris de bois de feuillu (acer

20-12-2025 10:49

Mirek Gryc

Hi. „I doubt it is possible to identify this ti

23-12-2025 08:27

Josep Torres Josep Torres

Hello.Small, yellowish ascomata, with very short a

21-12-2025 09:32

Josep Torres Josep Torres

Hello.A tiny ascomycete found embedded in wood in

21-12-2025 21:32

Pol Debaenst

Hello, Garden, Burgweg 19, Veurne, BelgiumOn 10/1

22-12-2025 23:38

Patrice TANCHAUD

Bonsoir, récolte sur un mur en pierre, apothéci

21-12-2025 12:34

Castillo Joseba Castillo Joseba

me mandan el material seco de Galicia (España) 

22-12-2025 00:47

Patrice TANCHAUD

Bonsoir, récolte à proximité du milieu dunaire

21-12-2025 21:40

Isabelle Charissou

Bonjour, j'aimerais connaitre les références de

20-12-2025 23:08

Patrice TANCHAUD

Bonsoir, récolte sur sol sablonneux dans l'arriÃ

« < 1 2 3 4 5 > »
Ombrophila violacea?
Marek Capoun, 26-11-2020 20:43
Marek CapounHello everybody, I need help with the determination of an Ombrophila on the fallen trunk (Alnus, probably, or Acer, maybe). Collected 1.11.2020, altitude cca 300 meters.
I thought it could be Ombrophila violacea or O. pura, but the ascospores are smaller than they should be.
Apos max. 6 mm on average, sessile or very shortly stalked, pink or rather pinkish white. Medullary excipulum gelified, in the tissue found conidiophores (really?). Ectal excipulum with text. prismatica (with incrustation?). Ascospores ellipsoid, (5.3) 5.7 - 6.6 (7.6) × (3.5) 3.7 - 4.1 (4.2) µm with 2 LBs and sometimes some others smaller.
There was some apos last year on that place too, on this same substrate and at the same time, but it was not examined by microscopy then.
Are such information and photos sufficient for a determination?
Thanks a lot.
Marek
  • message #66204
  • message #66204
  • message #66204
  • message #66204
  • message #66204
  • message #66204
  • message #66204
  • message #66204
  • message #66204
  • message #66204
  • message #66204
  • message #66204
  • message #66204
Hans-Otto Baral, 26-11-2020 22:16
Hans-Otto Baral
Re : Ombrophila violacea?
Yes, I guess this belongs in the scope of O. violacea. There are samples in my folder that are close: VII.2013 and IX.2014.

But I ask myself how heterogeneous this complex would be when sequenced.

There are no conidiophores in the medulla, this must be hyphae with exudate or crystal sheath.

Alnus and Acer are easily distinguished by wood anatomy.

Zotto
Marek Capoun, 26-11-2020 23:30
Marek Capoun
Re : Ombrophila violacea?
Dear Zotto, thanks for the post, confirmation and correction, and special thanks for placing my photos into your folders ;) Well, and I'm going to learn the anatomy of wood :))
Marek
Hans-Otto Baral, 27-11-2020 08:22
Hans-Otto Baral
Re : Ombrophila violacea?
Radial, tangential and cross sections would promptly show if it is Alnus or Acer or something else.