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02-12-2025 18:59

Malcolm  Greaves Malcolm Greaves

This pair of ascos 2.5cm across were on recently b

02-12-2025 19:25

Buckwheat Pete

Hello, can anyone identify this hairy fungus growi

02-12-2025 14:28

Mirek Gryc

527 / 5 000Hello everyoneThey grew on dead shoots

30-11-2025 12:53

Edvin Johannesen Edvin Johannesen

White short-stipitate apothecia found on thin twig

30-11-2025 10:47

William Slosse William Slosse

I recently found a collection of small Peziza sp.

27-11-2025 12:01

Thomas Læssøe

https://svampe.databasen.org/observations/10496727

27-11-2025 11:46

Thomas Læssøe

https://svampe.databasen.org/observations/10493918

17-09-2025 10:50

Heather Merrylees

Hi there!I am hoping for any advice on the identif

29-11-2025 08:40

Andreas Millinger Andreas Millinger

Hello,on a splintered part of a branch on the grou

28-11-2025 16:45

Nogueira Héctor

November 23, 2025 Requejo de Sanabria (León) SPAI

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Ressemble à un Cudoniella sur Cirsium palustre
Bernard CLESSE, 13-05-2016 22:06
Bernard CLESSEBonsoir à tous,

Hier, j'ai trouvé dans une prairie marécageuse, à la base d'une tige pourrie de cirse des marais (Cirsium palustre) quelque chose qui ressemble à un Cudoniella mais les asques sont IKI+ donc je ne vois pas ce que c'est…

a) longueur pied : 5 mm
b) diamètre apothécie : 3,5-4 mm 
c) spores étroitement ellipsoïdes-subfusiformes, lisses, hyalines, sans guttules :  11,5-16x4,5-5,2
d) asque à crochet à la base, IKI+, à base fort dextrinoïde 
e) excipiulum à textura intricata, avec parfois des guttules dans les hyphes

Bernard
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Hans-Otto Baral, 13-05-2016 22:13
Hans-Otto Baral
Re : Ressemble à un Cudoniella sur Cirsium palustre
I think it is Cudoniella clavus.
Bernard CLESSE, 15-05-2016 07:50
Bernard CLESSE
Re : Ressemble à un Cudoniella sur Cirsium palustre
Thank you for your opinion Zotto !

I also think it is Cudoniella clavus. On your DVD, I see that sometimes you indicate asques IKI + and other places IKI-


Here for my harvest, asci were IKI +

Best regards,

Bernard 

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Luc Bailly, 15-05-2016 22:40
Luc Bailly
Re : Ressemble à un Cudoniella sur Cirsium palustre
Hello all,
Just adding another photo from the same population. Same host. We were together in the marshes. The site looks quite promising.

Cheers - LUC.
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Hans-Otto Baral, 15-05-2016 22:55
Hans-Otto Baral
Re : Ressemble à un Cudoniella sur Cirsium palustre
Such variation occurs, yes. Maybe C. clavus is heterogeneous, but we have so few DNA data on it that we cannot say. I found that Phaeohelotium epiphyllum is usually IKI+ but can also be IKI-, and I could support this by DNA.
Peter Püwert, 15-05-2016 23:55
Peter Püwert
Re : Ressemble à un Cudoniella sur Cirsium palustre
Hi all,
in our distrikt is C. clavus a common fungus on wet places and many host plants, C. palustre too. On the fotos the hosts are Rubus, Filipendula, Alnus- and Quercus fruits.
Greetings Peter.
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Hans-Otto Baral, 16-05-2016 09:34
Hans-Otto Baral
Re : Ressemble à un Cudoniella sur Cirsium palustre
Hi Peter
I suppose you live in a region with acidic soil? In my area with more basic Keuper I never saw this species. But sometimes I saw C. tenuispora.
Zotto
Bernard CLESSE, 16-05-2016 11:51
Bernard CLESSE
Re : Ressemble à un Cudoniella sur Cirsium palustre
Thank you all for your additional information and new pictures.

Bernard
Peter Püwert, 16-05-2016 21:06
Peter Püwert
Re : Ressemble à un Cudoniella sur Cirsium palustre
Hi Zotto,
mainly we find the species here in South- Thuringia about acidic soil, but also now and then in the calcerous areas. Peculiarly is here C. tenuispora not to find, but also surely frequently about acidic soil.
Greetings Peter.
For me hardly conceivable, that during an excursion the last weekend the biggest part of the participants C. clavus the first time has seen.
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