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13-09-2025 14:10

Hymenoscyphus on Rubus
Wim de Groot

We found this hymenoscyphus on rubus fruticulosis.

13-09-2025 15:43

Recherche
Edmond POINTE Edmond POINTE

Bonjour Christian,J'ai trouvé deux spores ressemb

11-09-2025 16:57

Marthamycetales revision published
Jason Karakehian Jason Karakehian

Our revision of Marthamycetales (Leotiomycetes) is

13-09-2025 14:01

Otidea platyspora or something else?
Thomas Flammer

dark brown apothecia, splitIKI-Spores biguttulate

10-09-2025 23:53

Strickeria kochii?
Marcel Heyligen Marcel Heyligen

Found on Robinia pseudoacasia together with Diapor

10-09-2025 17:18

Pseudocoprotus catenipilus ???
Blasco Rafael Blasco Rafael

Hola, encontre este estiercol de vaca estos apotec

02-09-2025 11:34

dark- and small-spored Sordariomycetes on Fraxinus - Denmark
Thomas Læssøe

https://svampe.databasen.org/observations/10527903

07-09-2025 08:19

Hymenoscyphus?
Josep Torres Josep Torres

Hello.Tiny pinkish discomycetes, photographed and

09-09-2025 12:07

Trichobolus
Edmond POINTE Edmond POINTE

Bonjour amis mycologues,Trouvé sur moquette de ch

08-09-2025 19:07

Hymenoscyphus sp
ruiz Jose

Hola me pasan esta recolecta en madera de fraxinus

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Gray, reddening Hymenoscyphus(?)
Juuso Äikäs, 30-06-2019 08:43
I found these yesterday in a wet, muddy depression, growing on pieces of moist wood. I didn't first think of Hymenoscyphus when I saw these but the microscopy is something like it, I think. The apos seem to redden with age and/or when damaged. Some of the asci colored orange in Melzer's and some of them had amyloid apical rings. The spore dimensions are 14.5-20 x 4-5 micrometres. Any thoughts?
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Hans-Otto Baral, 30-06-2019 10:30
Hans-Otto Baral
Re : Gray, reddening Hymenoscyphus(?)
Could you please clarify if coniferous or not? How large are the apos?
The iodine reaction is rather faint. Did you also check in Lugol?  This and the croziers excludes Phalohelotium fulvidulum, but it could be of this group of species.

My subfolder "griseobrunneum ~amyloid H+" might come closest though the excipulum tends to be brownish. You find it in the folder Phaeohelotium monticola group.
Zotto
Juuso Äikäs, 30-06-2019 17:40
Re : Gray, reddening Hymenoscyphus(?)
I got the impression that it's hardwood, but I'm not sure. The biggest apos were about 3mm in diameter. I don't unfortunately have any Lugol.
Hans-Otto Baral, 30-06-2019 17:53
Hans-Otto Baral
Re : Gray, reddening Hymenoscyphus(?)
Hardwood is easy to verify, you only need a cross section and view either under a handlens (20x) or larger.
Juuso Äikäs, 30-06-2019 19:10
Re : Gray, reddening Hymenoscyphus(?)
I don't have the sample anymore but I'll bring some more if I return to the place soon.