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06-02-2026 01:14

Tomaz Vucko Tomaz Vucko

Hello!How would you name this species? Most perith

04-08-2014 17:35

Leandro Sánchez Leandro Sánchez

Sur branche de feuillus, jusqu'à 22 mm diamètre,

05-02-2026 15:07

Vasileios Kaounas Vasileios Kaounas

Found on a fallen needle of Pinus halepensis, diam

05-02-2026 06:43

Stefan Blaser

Hello everybody, Any help on this one would be mu

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

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Karstenia? anamoph?
Margot en Geert Vullings, 28-12-2025 12:08
This possible Karstenia was found on the bark of deciduous wood. We found only two septate spores that point to Karstenia idaei, and we think we see the periphysoids.
Spore measured in water: 50 × 3 µm
When making a slide, orange strings containing many anamorphic spores emerged from beneath these craters.
Conidia measured in water: 6.7 - 7.5 × 1.6 - 1.9µm, Q = 3.6 - 4.6
Could this be the anamorph of K. idaei? We haven't found any anamorphs of Karstenia idaei in Ellis&Ellis or online.

Thank you in advance for your help, 

Geert&Margot
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Lothar Krieglsteiner, 28-12-2025 12:13
Lothar Krieglsteiner
Re : Karstenia? anamoph?
I don`t think so. Look better in the vicinity of Valsa and Leucostoma.
Yours, Lothar
Martin Bemmann, 28-12-2025 12:49
Martin Bemmann
Re : Karstenia? anamoph?
the tiny black spots could be an Eutypella quaternata with its orange anamorph Libertella faginea.

Though the septate conidia look more like a Fusarium. Maybe another contamination...

Regards

Martin
Margot en Geert Vullings, 28-12-2025 15:50
Re : Karstenia? anamoph?
Thanks to both of you for the replies.
We'll continue our search and see if we can find asci.

Martin: The orange strands emerged from under the white perithecia when I poked them. We also initially thought it was Eutypella quaternata, which we've seen before, but we couldn't place it with the white discs.

Best regards, Geert&Margot