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09-09-2015 20:18

Blasco Rafael Blasco Rafael

Hola, En este caso creo que puede ser una Pyrenope

10-09-2015 02:18

ACAR ismail ACAR ismail

hi allon branch of quercusascospores 27-31 x 9-12

10-09-2015 16:35

Blasco Rafael Blasco Rafael

Hola, les parece que esto puede ser Dasyscyphella

10-09-2015 17:53

Castillo Joseba Castillo Joseba

madera muy deteriorada de FagusA ver que os parece

10-09-2015 17:55

Castillo Joseba Castillo Joseba

Imposible de determinar con exactitud la madera, Â

09-09-2015 18:49

Castillo Joseba Castillo Joseba

hoy he encontrado unas Xylarias,  todas ellas en

10-09-2015 12:21

Jakob Schneller Jakob Schneller

I have difficulties identifying this asco on Cirsi

09-09-2015 21:25

Jakob Schneller Jakob Schneller

I need help

03-09-2015 20:28

Patrice TANCHAUD

Bonjour,récolte réalisée en plaine sur feuilles

09-09-2015 21:24

Jakob Schneller Jakob Schneller

I need help

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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