Accès membres

Mot de passe perdu? S'inscrire

10-05-2020 23:27

Stefan Jakobsson

Hello, For once the path through the main key of

07-05-2020 16:36

Bernard CLESSE Bernard CLESSE

Bonjour à toutes et tous,J'ai trouvé récemment

10-05-2020 17:59

Riet van Oosten Riet van Oosten

Hello, Found by Laurens van der Linde, May 2020,

10-05-2020 16:27

Riet van Oosten Riet van Oosten

Hello, Found by Laurens van der Linde, May 2020,

10-05-2020 15:12

Andgelo Mombert Andgelo Mombert

Bonjour à tous, Sur branche morte de Cedrus atla

08-05-2020 11:32

Andgelo Mombert Andgelo Mombert

Bonjour, Sur brindilles de Hedera helix (5-15 mm

09-05-2020 21:03

Louis DENY

Bonjour. Pas de macro, désolé. Petit (diametre

08-05-2020 18:14

Josep Torres Josep Torres

Hola: Muy diminutos peritecios de forma globosa y

08-05-2020 19:27

Mirek Gryc

Hi. Two ascocarps growing on a thin branch of Sal

09-05-2020 14:04

Bernard Declercq Bernard Declercq

Hi,Collected on female catkins of Populus canescen

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Graddonidiscus?
Stefan Jakobsson, 10-05-2020 23:27
Hello,

For once the path through the main key of Raitviir (2004) was short: two steps to Graddonidiscus and in the genus key one step to G. vandae. Then the problems start.


This fungus was growing on an old leaf of Vaccinium myrtillus(?) attached to a dropping of elk (Alces alces) in a boggy habitat, just a few minute scattered apos. Finland. Spores 4.7 - 5.6 × 1.4 - 1.9 µm; asci approx. 25 x 3-4; paraphyses lanceolate, about 45 x 5; ectal excipulum textura prismatica.


I would appreciate any help with this.


Stefan

  • message #63125
  • message #63125
Charles Aron, 11-05-2020 09:41
Charles Aron
Re : Graddonidiscus?

Hi Stefan,


To me this looks like Lachnum rhytismatis with its crystal-capped hairs combined with the substrate. I remember finding quite frquent ascomata on fallen leaves of Vaccinium myrtillus.


Best wishes,


Charles.

Hans-Otto Baral, 11-05-2020 09:54
Hans-Otto Baral
Re : Graddonidiscus?
Yes, I agree. But there exist different species. On Vaccinium Velenovsky described Lachnum microsporum, so this would be the option here. But there is not  molecular study with enough sequences to clarify how many species might exist and how host-specific they are. In any case, the only good morphological character to separate these microspecies seems th be the ascus base (with or without croziers). Available data suggest, however, that on Vaccinium both cases occur....

Zotto
Stefan Jakobsson, 11-05-2020 10:07
Re : Graddonidiscus?
Yes, of course you are right. Too late to think clearly.

Thanks,

Stefan