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03-02-2026 20:44

Zetti Mario

When I first saw this white mould on an Agaricus s

18-08-2025 15:07

Lothar Krieglsteiner Lothar Krieglsteiner

.. 20.7.25, in subarctic habital. The liverwort i

02-02-2026 21:46

Margot en Geert Vullings

On a barkless poplar branch, we found hairy discs

02-02-2026 14:55

Andgelo Mombert Andgelo Mombert

Bonjour,Sur thalle de Lobaria pulmonaria.Conidiome

02-02-2026 14:33

Andgelo Mombert Andgelo Mombert

Bonjour,Sur le thalle de Peltigera praetextata, ne

31-01-2026 10:22

Michel Hairaud Michel Hairaud

Bonjour, Cette hypocreale parasite en nombre les

02-02-2026 09:29

Bernard CLESSE Bernard CLESSE

Bonjour à toutes et tous,Pour cette récolte de 2

01-02-2026 19:29

Nicolas Suberbielle Nicolas Suberbielle

Bonjour, Marie-Rose D'Angelo (Société Mycologiq

30-01-2026 22:49

éric ROMERO éric ROMERO

Bonjour tous, Récolté dans les Vosges le 22/10/

31-01-2026 09:17

Marc Detollenaere Marc Detollenaere

Dear Forum,On decorticated wood of Castanea,I foun

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Hymenoscyphus-like with fusiform spores
Juuso Äikäs, 17-07-2020 14:23
I found these growing on a fallen, decorticated branch (probably deciduous) at the bottom of a forest stream. 

Asci with croziers, IKI negative. 

Spores:

(12.1) 12.8 - 15.7 (16.9) × (5.4) 5.6 - 6 (6.1) µm
Q = (2) 2.2 - 2.6 (3.1) ; N = 15
Me = 14 × 5.8 µm ; Qe = 2.4

What might this be?
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Hans-Otto Baral, 17-07-2020 17:01
Hans-Otto Baral
Re : Hymenoscyphus-like with fusiform spores
This must be Hymenoscyphus phiala, a name that is not clear at all, but the species is. I know it only from Alnus, and your branch looks like this as there are false radial rays that cause a slight slit-like depression on the wood surface.

I have it in my Cudoniella folder.

Zotto
Juuso Äikäs, 17-07-2020 19:18
Re : Hymenoscyphus-like with fusiform spores
Thank you, that seems to fit quite well. Once again a species that doesn't seem to be on the Finnish species list. 

There was Alnus incana growing at the place, so there's a good chance that's the substrate. I checked the pores and looks like hardwood to me, and I suspect the orange layer might speak for Alnus.
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Hans-Otto Baral, 17-07-2020 22:26
Hans-Otto Baral
Re : Hymenoscyphus-like with fusiform spores
The pores in radial rays tell for a Betulaceae. You can check in radial section the dense ladders in the vessels typical of Alnus.