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03-04-2026 17:11

Schizoxylon?
Bohan Jia

Lastly, I have found these small apothecia on a co

31-03-2026 21:18

Lambertella tetrica paper
Miguel Ãngel Ribes Miguel Ángel Ribes

Good evening. oes anyone have the original descrip

31-03-2026 20:57

"Nectria" - for a lack of better knowledge...
Stefan Blaser

Hello everybody, I hope somebody can help me with

26-03-2026 15:31

Hymenoscyphus ombrophiliformis?
Ãke Widgren Åke Widgren

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

31-03-2026 16:20

Helotiales from Tanzania
Mlcoch Patrik Mlcoch Patrik

Hello, Please about help with determination. On

31-03-2026 08:19

Daldinia childiae parasité
Bernard CLESSE Bernard CLESSE

Bonjour à toutes et tous,Pourriez-vous m'aider à

30-03-2026 12:18

Demande d'aide
Sylvie Le Goff

BonjourRécolté sur la base de Pteridium aquilinu

30-03-2026 12:03

Dumontinia on Ficaria?
William Slosse William Slosse

Hello all,On 27/03/26, in Kraaiveld in Wingene (Be

25-03-2026 10:35

Encoelia impudicella?
Hulda Caroline Holte

Hello,I collected this species growing on a dead b

28-03-2026 17:41

Mollisia sur Molinia
Louis DENY

Bonjour forum,Mollisia trouvée sur tige de Molini

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Greenish on Betula leaf
Juuso Äikäs, 16-10-2020 15:02
These yellowish-greenish little ascos were growing on a fallen leaf of Betula sp. The paraphyses and hairs had nice greenish VBs that disappeared with the addition of KOH. IKI+, croziers+. The spores measured 14.3-17.5 x 1.8-2.6 microns.

This seems both macro- and microscopically fairly distinctive and interesting to me. Maybe someone knows the species?
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Hans-Otto Baral, 16-10-2020 15:47
Hans-Otto Baral
Re : Greenish on Betula leaf
This is Calycellina araneocincta. Very close to C. lachnobrachya but with yellow VBs and specific to Betula.

Both species are unsequenced as far as I know, only C. lachnobrachyoides is in GenBank. To base a distinct species solely on colour is unusual, therefore I wonder about the genetic distance between the two.
Juuso Äikäs, 16-10-2020 16:28
Re : Greenish on Betula leaf
Thanks for the info. So this time it was a Calycellina! I found Phialina lachnobrachya from our species list (apparently a synonym for C. lachnobrachya), but no araneocincta. Maybe I'll try to find more to make a sample for storage.
Hans-Otto Baral, 16-10-2020 16:39
Hans-Otto Baral
Re : Greenish on Betula leaf
yes, some authors follow Huhtinen to place the group in Phialina.