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12-05-2020 13:21

Fedorenko Vassiliy Fedorenko Vassiliy

Can anyone help me with with the following articl

11-05-2020 20:43

Zuzana Sochorová (Egertová) Zuzana Sochorová (Egertová)

Hello, I would like to consult this recent find fr

12-05-2020 20:57

Louis DENY

Bonsoir forum,trouvé au bord d'un ruisseau, sur t

24-04-2020 14:10

Sigrid Jakob

Asci with hyaline spores 40-45µm x 5µm. Dark cel

12-05-2020 21:36

Juuso Äikäs

I visited a small, swampy forest today and found s

12-05-2020 18:19

Sven Heinz Sven Heinz

Hello everyone, can someone help me with the mushr

12-05-2020 19:56

Angel Pintos Angel Pintos

Hello anybody has this description?Dothiorella rha

11-05-2020 14:56

Juuso Äikäs

I found some Lasiobolus growing on dung of some an

11-05-2020 14:45

Edvin Johannesen Edvin Johannesen

Very small (up to 0,2 mm diam.) whitish apothecia

11-05-2020 19:30

Juuso Äikäs

I photographed these a couple weeks ago or so. The

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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