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26-03-2026 15:31

Hymenoscyphus ombrophiliformis?
Ã…ke Widgren Ã…ke Widgren

Hello,I found this one in October last year, on r

27-03-2026 15:23

Trichopezizella barbata?
Gernot Friebes

Hi,this Trichopezizella deviates from typical T. b

25-03-2026 10:35

Encoelia impudicella?
Hulda Caroline Holte

Hello,I collected this species growing on a dead b

27-03-2026 15:08

Coelomycete on Cirsium
Gernot Friebes

Hi,I'm looking for help with this coelomycete on C

27-03-2026 10:47

Stictis cf. friabilis and literature request
Ã…ge Oterhals

I have tentatively identified this Stictis to S. f

24-03-2026 21:37

Helminthosphaeria
Elisabeth Stöckli

Bonsoir,Sur bois (tronc) très pourri de conifère

26-03-2026 12:50

Pseudombrophila
David Chapados David Chapados

Hi,I'm having a hard time figuring which Pseudombr

26-03-2026 11:17

asco in Ulmus
Vasileios Kaounas Vasileios Kaounas

Found 11-03-26, in leaf of Ulmus sp. Diameter 2-4

25-03-2026 22:23

Orbilia with resin deposits
Marc Detollenaere Marc Detollenaere

Dear Forum,On a debarked stem of Tilia, we found s

24-03-2026 15:44

Leptodontidium cf. trabinellum
Ã…ge Oterhals

I hope someone can confirm the name of this collec

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Asco (Diatrype?) on Quercus robur
William de Jong, 14-03-2021 21:04
Hi,
I found an ascomycete on a dead attached branch of Quercus robur. Black perithecia/ostioles hidden under bark. It looks a bit like a Diatrype species. Ascus with 6-8 spores. Spore size: 20,6-26,5 x 5,8-7,4 µm; average: 23,9 x 6,8 µm.
Does anyone know a good fit for this one?
William
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Alain GARDIENNET, 14-03-2021 21:15
Alain GARDIENNET
Re : Asco (Diatrype?) on Quercus robur
Asci are bitunicate, please check out  Massarina s.l. .