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21-04-2026 13:36

Wentiomyces-like on Salix
Gernot Friebes

Hi,I am out of ideas for this one. I collected Sal

21-04-2026 13:19

Lophodermium on Typha
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Hi,this Lophodermium on Typha has ascospores measu

21-04-2026 13:05

Hyphomycete on Typha
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Hi,this hyphomycete feels familiar but I was not a

20-04-2026 22:00

Trichobolus dextrinoideosetosus?
Malcolm Greaves Malcolm Greaves

These pale yellow, hairy ascos were growing on cul

19-04-2026 21:23

Hairy anamorph on plywood with beaked curved conidia
Steve Clements

Bonjour, I found this anamorphic fungus on old pl

19-04-2026 20:46

Anamorphic fungus on plywood
Steve Clements

1 mm diameter approx spherical conidiophores on pl

12-04-2026 17:56

Seeking genus for 1 – 3 septate spored asco. on herb Nepteta cataria (Mint).
Hardware Tony Hardware Tony

Found on dead stems in February earlier this year

17-04-2026 19:16

Small dark synnemata on rotten hardwood
Enrique Rubio Enrique Rubio

Hi to everybodyI would appreciate any assistance r

14-04-2026 05:32

Pyrenomycete with yellow subiculum on Aralia
Ethan Crenson

Hi all, A few weeks back a friend pointed out som

17-04-2026 15:14

sur feuilles de Luzula
Bruno Coué Bruno Coué

Bonjour.Récoltes du 16/04/2026, sur feuilles mort

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Microthyrium on Rubus?
Björn Wergen, 08-04-2012 20:58
Björn WergenHi all,

I have found a small, Microthyrium-like pyrenomycete with unitunicate (?) asci and spores about 10-14x3-4,5µm, first with a single medium septa, mature spores with 3 septa, smooth, hyaline, without appendices. 

Substrate: Rubus fruticosus.

I have checked Ellis&Ellis, there are some Microthyrium species described but I think this here is something else. Who can help?

thanks and regards,
björn

edit: Can it be Microthyrium versicolor?
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Alain GARDIENNET, 08-04-2012 22:37
Alain GARDIENNET
Re : Microthyrium on Rubus?
Hi Björn,
Your fungus doesn't look like Microthyrium which are superficial species.
No idea at once.
Alain
Chris Yeates, 09-04-2012 03:42
Chris Yeates
Re : Microthyrium on Rubus?
hello Björn

I agree with Alain - this certainly isn't Microthyrium versicolor which in my experience has quite a thick upper surface and distinctive margin - see the images (not brilliant, but you will get the idea); your spores, while mostly immature, as you say are developing 3 septa - again not suggesting the Microthyriaceae . . . 

Chris
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Björn Wergen, 09-04-2012 07:21
Björn Wergen
Re : Microthyrium on Rubus?
Thank you both, it would be the first time for me with a Microthyrium...so I need some experience, which I get even if THIS is not a Microthyrium ;)

I am interested in what this is...
Chris Yeates, 09-04-2012 14:13
Chris Yeates
Re : Microthyrium on Rubus?
If you want to see Microthyrium, Björn, have a look at fallen Ilex aquifolium and Buxus leaves - you should find it pretty quickly! You will find that the thyriothecia will easily lift off the surface of the leaf with a needle or sharp scalpel blade.

best wishes

Chris