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23-12-2025 08:27

Hymenoscyphus?
Josep Torres Josep Torres

Hello.Small, yellowish ascomata, with very short a

07-03-2026 22:22

Volutella?
Josep Torres Josep Torres

Hello.Some very tiny conidiomes collected in the D

07-03-2026 13:06

Phaeohelotium parasulphuratus ?
éric ROMERO éric ROMERO

Bonjour tous, Sur cône d'épicea fortement imbu,

06-03-2026 17:51

Orbilia?
William Slosse William Slosse

Good evening all,On March 4, 2026, I found the fol

05-03-2026 16:30

Is this Diaporthe rudis?
François Bartholomeeusen

Dear forum members, On the 2nd of February 2026,

06-03-2026 09:41

indian literature
Alain GARDIENNET Alain GARDIENNET

Hi forum, I'm now looking for another reference c

28-02-2026 11:05

Peziza
Yanick BOULANGER

Bonjour à tousLe 24/02/2026 à Montmacq, devant m

05-03-2026 10:07

White apothecia on pine cone
Hulda Caroline Holte

Hello, I found and collected this species growing

05-03-2026 19:29

Ciboria caucus?
William Slosse William Slosse

Good evening everyone,On March 4, 2026, I found th

19-02-2026 17:49

Ayuda con Tarzetta sp
Salvador Emilio Jose

Hola buenas tardes!! Necesito ayuda para la ident

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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