Accès membres

Mot de passe perdu? S'inscrire

01-06-2025 09:37

Octospora
Charles Aron Charles Aron

Hi All, I found this Octospora growing with liver

06-07-2025 19:36

Auda con esta
Castillo Joseba Castillo Joseba

me mandan el material de Galicia (España) recolec

07-07-2025 19:22

Ascomycota
David Chapados David Chapados

Hi,Does anyone know what could this anamorph be?ht

05-07-2025 12:38

Pyrenomycetous fungi on dead Juniperus twig
Åge Oterhals

I found this pyrenomycetous fungi in pine forest o

02-07-2025 18:45

Sur Osmunda regalis
Elisabeth Stöckli

Bonsoir,Sur feuilles d'Osmunda regalis (Saulaie),

04-07-2025 20:12

Black thready anamorph
Josep Torres Josep Torres

Hello.A fungus growing on the surface of a trunk o

20-06-2025 08:33

Ascomycete on a herbaceous stem.
Josep Torres Josep Torres

Hello.Small, blackish, mucronated surface grains s

28-06-2025 16:00

Salvia leaf parasite
Josep Torres Josep Torres

Hello.A tiny fungus shaped like globose black grai

04-07-2025 12:43

En tallo de herbaceas 1102
Castillo Joseba Castillo Joseba

me mandan el material seco de Galicia (España) 

03-07-2025 18:40

Melampsora ??? en Salix
Castillo Joseba Castillo Joseba

me mandas el material seco de Galicia (España) re

« < 1 2 3 4 5 > »
Cudoniella clavus?
Masanori Kutsuna, 11-06-2012 03:06

??Dear everyone.

This discomycete, frequently found in Japan, seems to be identical to Cudoniella clavus in macroscopic, microscopic, and ecological characters.
According to Dennis, etc., ascus pore of C. clavus is non-amyloid, but this ascus pore turns blue by IKI, more clearly with KOH pre-treatment. (I have no microphoto)
Is it true C. clavus?


Masanori Kutsuna



 

  • message #18900
Hans-Otto Baral, 11-06-2012 09:17
Hans-Otto Baral
Re : Cudoniella clavus?
I think your collection is very typical C. clavus.

In Huhtinen 1985: 511 (mycoflora Poste-de-la-Baleine?) the reaction is clearly blue after KOH. Also In my collections I saw repeatedly a distinct blue reaction in IKI (Hymenoscyphus-type).


However, at least in one (HB 1000, from Black Forest) ?I noted IKI-. This explains why authors like Dennis, Breitenbach & Kränzlin or Gamundi 1998: 114? likewise found inamyloid asci.


Zotto?

Masanori Kutsuna, 11-06-2012 09:27
Re : Cudoniella clavus?
Dear Zotto

Thank you for the answer.
Let me ask you a question.

If so, what is the difference between Hymenoscyhus and Cudoniella?

Regards,
Masanori Kutsuna 
Hans-Otto Baral, 11-06-2012 10:08
Hans-Otto Baral
Re : Cudoniella clavus?
That is a good question. The generic concept is under reorganization since many years. Hymenoscyphus will mainly comprise species with scutuloid spores (with a pointed base), but also some with homopolar spores. My idea is that Cudoniella includes also species such as Hymenoscyphus imberbis, immutabilis and fagineus, but I am not sure if molecular data support this in every case. To give characters of these genera is difficult. Only the consistent absence of scutuloid spores in the genera Cudoniella and Phaeohelotium seems to be a sharp difference to Hymenoscyphus. The convex disc in Cudoniella is probably not a good character.

Zotto
Masanori Kutsuna, 11-06-2012 10:14
Re : Cudoniella clavus?
Thanks again.

Regards,
Kutsuna