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03-03-2024 15:14

Marc Detollenaere Marc Detollenaere

Dear forum,In the moss dunes of Bray-Dunes(F),one

01-03-2024 18:06

Marc Detollenaere Marc Detollenaere

Dear Forum,On unidentified moss I found some small

01-03-2024 23:06


Bonjour, Sur laissée de mustélidé indeterminé

02-03-2024 12:37

Bernard Declercq Bernard Declercq

Hello,I am looking for a pdf of following paper:Ud

29-02-2024 10:42

Charles Grapinet Charles Grapinet

Hello, Yesterday I found a Periconia on a dead Ae

22-10-2019 00:02

Yannick Mourgues Yannick Mourgues

On Fagus decorticated wood near a stream. Diametr

29-02-2024 16:43

Malcolm  Greaves Malcolm Greaves

Can someone suggest what this might be. It is deve

25-02-2024 19:50

Robin Isaksson Robin Isaksson

Found this one 3-4 times on resin in SwedenAsci IK

24-02-2024 15:15

Louis DENY

Bonjout ForumTrouvé à Belfort (400m altitude), s

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Parasite on Octospora
Savic Dragisa, 31-01-2023 13:50
Regards to all
An unusual finding, especially for me. Some anamorphic parasite on Octospora aff. gyalectoides. I need help or advice where to look?

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  • message #75035
Viktorie Halasu, 01-02-2023 01:33
Viktorie Halasu
Re : Parasite on Octospora
there is Melanospora brevirostris on hymenium of Geopora sp, perhaps this is related?
Charles Aron, 01-02-2023 19:21
Charles Aron
Re : Parasite on Octospora


Really interesting to find a parasite on a genus which, to my mind, is difficult to locate. Melanospora brevirostris(see photos) is not uncommon on Geopora on the sand dunes of west Anglesey. Melanospora ascospores look quite diifferent so it does suggest some other (probably anamorphic) genus.

Best wishes,


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  • message #75064
Robin Isaksson, 01-02-2023 20:36
Robin Isaksson
Re : Parasite on Octospora
Sorry to borrow your thread, but i wounder if anyone have seen this one. I have found twice on pulvigera with hyaline conidia and black small perithecia. 4.5-5,4-1.8-2.3 um pictures

I have seen your parasite aswell or close. On octospora coccinea in Sweden, with brownish spores.
couldent fina a name for it though.

I think it is amazing to find species on so shortlived species like this.

Best regards
  • message #75066
  • message #75066
Alain GARDIENNET, 02-02-2023 16:09
Re : Parasite on Octospora
Phoma-like ?
Jan Eckstein, 06-02-2023 17:45
Re : Parasite on Octospora
Dear Dragisa,

an extraordinary find! I never encountered this and I also didn't came across something like it in the Octospora sl literature. I wonder if it is host specific.

This doesn't help you, but thank you for this very cool observation.

With best wishes 

Savic Dragisa, 06-02-2023 17:56
Re : Parasite on Octospora
Thanks Alain, very possibly Phoma or something close to it. We'll see what the sequence says.

Jan, this was actually found by Lukaš Janošik, and many other Octospora species of course. He was visiting me for a week.