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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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Hymenoscyphus on Betula leaves
Juuso Äikäs, 29-10-2020 17:28
There were plenty of these growing on decaying Betula sp. leaves. 

Spores fusiform, with tiny dark drops, measuring 13.4-16 x 6.5-7.1 micrometres. Praphyses cylindrical, top parts full of rapidly moving VBs. Margin also with VBs. Croziers present, IKI+(b). 

Seems like a Hymenoscyphus once again, but further I can't tell.
  • message #65635
  • message #65635
Hans-Otto Baral, 29-10-2020 18:05
Hans-Otto Baral
Re : Hymenoscyphus on Betula leaves
I am unable to say. The apos look rather small, are they? Any stipe?

A section of the excipulum could give some further hint. Cudoniella probably, but spores quite large, larger than in H. imberbis which is a Cudoniella too.
Juuso Äikäs, 29-10-2020 19:11
Re : Hymenoscyphus on Betula leaves
The apos are quite small -- the largest ones maybe a millimeter in diameter or so. And they do have a stipe. Making a section would be quite difficult, but maybe I'll try it a bit later.