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Mot de passe perdu? S'inscrire

17-09-2025 19:43

Philippe PELLICIER

Sur branche morte de Mélèze. Les ascospores sphÃ

17-09-2025 16:14

Philippe PELLICIER

Apothécies enterrées, fermées au début puis s'

17-09-2025 10:50

Heather Merrylees

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

11-09-2025 16:57

Jason Karakehian Jason Karakehian

Our revision of Marthamycetales (Leotiomycetes) is

16-09-2025 12:53

Philippe PELLICIER

Pézizes de 1-4 mm, brun grisâtres, sur les capsu

03-09-2025 12:44

Enrique Rubio Enrique Rubio

Hi to somebody.I would like to know your opinion o

15-09-2025 14:40

Nicolas VAN VOOREN Nicolas VAN VOOREN

Hello.I'm searching for a digital copy of the seco

14-09-2025 22:16

Philippe PELLICIER

Apothécies petites jusquà 3 mm, oranges, avec de

13-09-2025 14:01

Thomas Flammer

dark brown apothecia, splitIKI-Spores biguttulate

10-09-2025 17:18

Blasco Rafael Blasco Rafael

Hola, encontre este estiercol de vaca estos apotec

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Mytilinidion on Picea
Juuso Äikäs, 27-02-2022 13:11
This Mytilinidion(?) species was growing at the black, resinous base of a dead, thin branch of Picea abies that was still attached to the living tree. It was growing together with Sarea difformis. 

The spores are 4-celled and measure 18.4 - 23.5 × 5.6 - 6.6 µm. Asci bitunicate, no iodine reactions in Lugol's solution.

Any ideas what the species might be?
  • message #71930
  • message #71930
Alain GARDIENNET, 27-02-2022 22:38
Alain GARDIENNET
Re : Mytilinidion on Picea
Hello Juuso,
It seems to be very close to Mytilinidion tortile.
If you have enough material, I would be happy to study it.
Alain GARDIENNET
14vrue roulette 21260 VERONNES
France
Juuso Äikäs, 28-02-2022 06:57
Re : Mytilinidion on Picea
Thanks for the reply and offer! After some searching M. tortile was actually my best candidate, but the spores are a bit on the large side. I probably could send you the sample this week.
Gernot Friebes, 28-02-2022 09:51
Re : Mytilinidion on Picea
Hi,

I know similar collections on resin and they might be somewhat close to Mytilinidion resinicola, although that species is described as having spores with constricted septa, which I have never clearly observed in my material. Some years ago I sent photos to Eric Boehm and he confirmed that M. resinicola might be the best name to use for these collections.
I am curious to hear your results, Alain.

Best wishes,
Gernot
Juuso Äikäs, 28-02-2022 14:05
Re : Mytilinidion on Picea
The sample is now posted, but it might take some time, since it's an economy letter. 

I found one key that stated that M. resinicola is a North American species, but who knows. The name sounds promising :).
Adam Polhorský, 28-02-2022 14:24
Re : Mytilinidion on Picea
Hey everyone,

I know this species aswell, it is fairly common on blackened Picea abies resin, usually from higher altitudes. One collection from friend is on Abies alba. It can grow together with Lophium mytilinum, but that one is larger and more conchate.

I've got sequences from two cultures. In LSU there is about 4% (30nt) difference to either M. tortile, M.resinicola or Lophium arboricola. In spore morphology, there are clear and constant differences to these species.

In time we could put these collections together, if you would be interested.

bw,

Adam
  • message #71945
  • message #71945
Alain GARDIENNET, 28-02-2022 21:17
Alain GARDIENNET
Re : Mytilinidion on Picea
Good news !

My idea was indeed that it could be a new species. Indeed, not only the morphology and the size of the ascospores is different from the known species quoted, but also the morphology of the ascomata. Adam's answer confirms me. We can compare the results. I will contact you privately.
Alain