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12-06-2026 14:50

Mollisia revincta (?)
François Freléchoux François Freléchoux

Bonjour, Voici la brève description d'une Mollis

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Ascomycète stipité sp. sur Filipendula ulmaria
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Bonsoir,Le dernier du jour, en attendant votre avi

11-06-2026 16:24

Orbilia
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Hi all, Recently, a friend found this Orbilia in

11-06-2026 19:01

Spinellus-like fungus on Scathophaga stercoraria
William Slosse William Slosse

Hello all,In an attempt to make a culture of a sus

11-06-2026 19:03

IMPORTANT >> MAINTENANCE 15-06
Nicolas VAN VOOREN Nicolas VAN VOOREN

Chers membres d'Ascofrance,Le site sera placé en

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Mollisia nervicola ?
éric ROMERO éric ROMERO

Bonjour tous, Je vous propose un Mollisia trouvé

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Vibrisseaceae(?) sur phragmites
Camille Mertens

Sur morceau de roseau immergé 0,5 - 0,7 mm de dia

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A dematiaceous hyphomycete on Filipendula
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Bonjour encore, Pouvez-vous m'aider, s'il vous pl

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Pyrénomycète ? sur Gentiana lutea
François Freléchoux François Freléchoux

Toutes les tiges de gentianes jaunes de l'an passÃ

10-06-2026 13:41

Ascomycète sp. sur Gentiana lutea
François Freléchoux François Freléchoux

Bonjour à nouveau, Voici une trouvaille d'hier.

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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