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07-06-2025 15:39

Edvin Johannesen Edvin Johannesen

A friend sent me a few Betula seeds with tiny blac

07-06-2025 15:38

Edvin Johannesen Edvin Johannesen

A friend sent me a few Betula seeds with tiny blac

07-06-2025 15:38

Edvin Johannesen Edvin Johannesen

A friend sent me a few Betula seeds with tiny blac

07-06-2025 15:28

Edvin Johannesen Edvin Johannesen

A friend sent me a few Betula seeds with tiny blac

07-06-2025 15:27

Edvin Johannesen Edvin Johannesen

A friend sent me a few Betula seeds with tiny blac

07-06-2025 15:27

Edvin Johannesen Edvin Johannesen

A friend sent me a few Betula seeds with tiny blac

07-06-2025 15:26

Edvin Johannesen Edvin Johannesen

A friend sent me a few Betula seeds with tiny blac

07-06-2025 15:26

Edvin Johannesen Edvin Johannesen

A friend sent me a few Betula seeds with tiny blac

07-06-2025 15:25

Edvin Johannesen Edvin Johannesen

A friend sent me a few Betula seeds with tiny blac

07-06-2025 15:25

Edvin Johannesen Edvin Johannesen

A friend sent me a few Betula seeds with tiny blac

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Ascomycete on crust
Dieter Slos, 26-12-2012 10:24
Hi all,

I found this small ascomycete on a corticoid fungus. I have totally no idea where to start. Any ideas would be welcome. The spores are about 23 x 13 µm. I only found one fruitbody.

Regards,
Dieter
  • message #20867
  • message #20867
  • message #20867
Hans-Otto Baral, 26-12-2012 13:13
Hans-Otto Baral
Re : Ascomycete on crust
an Erisyphales I suspect.
Dieter Slos, 26-12-2012 14:18
Re : Ascomycete on crust
Thanks Zotto,

Any idea of usable keys in this order? And I suspect this is the theleomorph because it produces asci?

Dieter
Hans-Otto Baral, 26-12-2012 14:54
Hans-Otto Baral
Re : Ascomycete on crust
I hope someone else in this forum can help here. The hairs are surely important for an identification.

Chris Yeates, 27-12-2012 21:34
Chris Yeates
Re : Ascomycete on crust
I agree with Zotto about Erysiphales; always a challenge when you don't know the original host; to start with you need good details of the hairs (length, number and whether they have terminal ornamentation), plus how many asci are in the chasmothecium and how many spores per ascus . . .
amitiés
Chris
Dieter Slos, 29-12-2012 10:53
Re : Ascomycete on crust
Oké, thx for the confirmation. It seems that I have to find more material before I can continue this quest.

Dieter
Chris Yeates, 29-12-2012 13:53
Chris Yeates
Re : Ascomycete on crust
Hello Dieter
try and discover which host plant this came from - that is by far the easiest way to begin to identify members of the Erysiphales
best wishes
Chris