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04-11-2025 12:43

Edvin Johannesen Edvin Johannesen

Hi! One more found on old Populus tremula log in O

04-11-2025 09:07

Josep Torres Josep Torres

Hello.A suspected Hymenoscyphus sprouting on a thi

03-11-2025 21:34

Edvin Johannesen Edvin Johannesen

These tiny (0.4-0.5 mm diam.), whitish, short-stip

03-11-2025 19:41

David Chapados David Chapados

Hi,Does anyone knows which genus could this be? G

28-10-2025 15:37

Carl Farmer

I'd be grateful for any suggestions for this strik

03-11-2025 16:30

Hans-Otto Baral Hans-Otto Baral

Hello I want to ask you if you have found this ye

01-11-2025 09:14

Francis Maggi

Bonjour,Trouvé sur Xanthoria parietina à Valdebl

28-10-2025 19:33

Nicolas Suberbielle Nicolas Suberbielle

Bonjour à tous,Je voudrais votre avis sur cette r

31-10-2025 09:19

Lothar Krieglsteiner Lothar Krieglsteiner

Can somebody provide me with a file of:Rogerson CT

30-10-2025 03:53

Ethan Crenson

Hi all,  I would like an opinion on whether this

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Ciboria cf. caucus
Nina Filippova, 27-04-2015 15:43
Hello dear Forum.

This very early species was found today on catkins of Populus tremula, on road side in mixed coniferous-deciduous forest. It is still snow in the forest, but south slopes are exposed and there was the fungus fruiting.

It goes to C. caucus using Nordic Macromycetes (2000) key, but the spores in my specimen are some larger.

Asci 155 (140-180) x 10.5 (10-11); paraphyses cylindrical, slightly enlarged in upper part, 3-3.8 broad there; spores 11.7 (10.8-12.3) x 6.7 (6.3-7.1), Q=1.74, n=23.
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Hans-Otto Baral, 27-04-2015 15:52
Hans-Otto Baral
Re : Ciboria cf. caucus
Hello Nina

this spore size is fully o.k., see my drawings on Salix.

Those on Corylus and Alnus have smaler spores and are a different species, C. amentacea.

Probably Nordic M. mixes both, also they probably give dimensions of dead spores.

I usually find the species on Salix, while on Populus , the type substrate, it is not often collected.

Zotto
Nina Filippova, 27-04-2015 18:19
Re : Ciboria cf. caucus
Thank you, Zotto!