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29-04-2024 21:32

Yellowish asco on Pteridium aquilinum
Robin Isaksson Robin Isaksson

Hi! Found in Sweden. Ascomata with haris, se

29-04-2024 21:51

Anamorph with very large dark round conidia found on Cedrus
Mathias Hass Mathias Hass

Hi everyone, Found on attached branches of top pa

28-04-2024 18:05

Pseudoophiobolus (?) sur Teucrium botrys
Bernard CLESSE Bernard CLESSE

Bonsoir à toutes et tous,J'ai trouvé ce matin ce

28-04-2024 13:30

Pale Trichopeziza
Juuso Äikäs

On Friday I found these pale, hairy little discos

24-03-2024 08:27

Rosellinia britannica ?
Thierry Blondelle Thierry Blondelle

HiOn Hedera helix fallen branchEcological habitat:

26-04-2024 10:07

Rhytismataceae on Juniperus sabina
Mathias Hass Mathias Hass

Hello, Does anyone know what this is? Found on J

24-04-2024 21:54

Lasiobolus macrotrichus
éric ROMERO éric ROMERO

Bonjour, J'ai trouvé ce Lasiobolus sur laissées

23-04-2024 15:18

out of topic - peculiar unripe fungus, not an ascomycete
Lothar Krieglsteiner Lothar Krieglsteiner

... but likely a basidiomycete. I hope it is o.k.

23-04-2024 13:17

Ascobolus foliicola
Edouard Evangelisti Edouard Evangelisti

Bonjour à tous, Je viens de récolter ce que je

23-04-2024 21:49

Byssonectria (?) Pyronemataceae from Eastern US
Ethan Crenson

Hello all, A friend recently found this orange as

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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