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19-10-2025 18:58

Bernard CLESSE Bernard CLESSE

Bonsoir à toutes et tous,Il y a un peu plus de de

19-10-2025 14:10

Camille Mertens

Bonjour à tous.Asco stipité 1mm de texture appar

17-10-2025 18:45

Riet van Oosten Riet van Oosten

Hello, Found by Laurens van der Linde, Oct. 2025.

23-09-2025 13:31

Thomas Læssøe

https://svampe.databasen.org/observations/10534623

15-10-2025 16:39

Edvin Johannesen Edvin Johannesen

These tiny (0.2-0.6 mm), white, pulvinate apotheci

03-10-2025 13:44

Riet van Oosten Riet van Oosten

Hello, Found by Laurens van der Linde on Populus

13-10-2025 19:05

Louis DENY

Bonjour forumSur tronc décortiqué de feuillu x,

17-02-2013 21:11

Peter Welt Peter Welt

Jamoni, P.G. 1998. Un nuovo discomicete coprofilo

11-10-2025 20:27

Marcel Heyligen Marcel Heyligen

Found on a barked branch, 14 mm in diameter, of Ro

11-10-2025 14:20

Jean-Luc Ranger

bonjour à tous, Je ne vois pas comment l'on peut

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Valsa on Salix
Karl Soler Kinnerbäck, 30-01-2022 20:13
Hi! 

Need help with this Valsa on Salix, Uppsala, Sweden, 2022-01-29. 

Sp. 14-19 x 2,5-3.    Asci 8-spored.

No stromatic line as far as I can see. Was thinking about V. ambiens or sordida. 

Best regards
Karl
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Eduard Osieck, 31-01-2022 11:19
Re : Valsa on Salix
Hi,
Probably V. ambiens because V. sordida usually has much shorter ascospores: 8-12 (-15) x 1-3 um according to Hayova & Minter 1998.
Eduard
Karl Soler Kinnerbäck, 31-01-2022 13:30
Re : Valsa on Salix
Hi Eduard,

Thanks for your suggestion! It sounds resonable. I actually found V. ambiens on Acer during the same field visit but that specimen had clearly wider spores (3-4), which made me wonder if they were really the same. Is it a reasonable variation in spore size?

Best regards
Karl