26-03-2026 15:31
Åke Widgren
Hello,I found this one in October last year, on r
27-03-2026 10:47
Åge OterhalsI have tentatively identified this Stictis to S. f
25-03-2026 10:35
Hulda Caroline HolteHello,I collected this species growing on a dead b
24-03-2026 21:37
Elisabeth StöckliBonsoir,Sur bois (tronc) très pourri de conifère
25-03-2026 22:23
Marc Detollenaere
Dear Forum,On a debarked stem of Tilia, we found s
24-03-2026 15:44
Åge OterhalsI hope someone can confirm the name of this collec
25-03-2026 20:53
François BartholomeeusenDear forum members,On 23 March 2026, I found sever
23-03-2026 20:16
Miguel Ángel Ribes
Good eveningI'm unable to identify this Coprotus o
Hymenoscyphus ombrophiliformis?
Åke Widgren,
26-03-2026 15:31
Hello,I found this one in October last year, on rutten leaves of Carex elata, on the bank of a small stream (Blekinge, southern Sweden). Unfortunately only a single fruit body, so I have microscoped just a small part of it. I´m quite sure it´s a Hymenoscyphus, and if so there are probably two alternatives - H. ombrophiliformis and H. syringaecolor. I think H. ombrophiliformis fits better, but the substrate maybe a bit odd? Are there any other alternatives?
Fb: about 4 mm wide, 2,5 mm high.
Color: purple
Spores: (17,9-) 19,3-21,5 (-22,5) x 4,5-5,0 um. Me = 20,4 x 4,8. Qe = 4,3.
Asci: about 140-155 um long.
Paraphyses: filiform and septated, with small vacuoles.
I am grateful for your comments. Any help will be appreciated.
Best regards,
Åke
Michel Hairaud,
26-03-2026 15:58
Re : Hymenoscyphus ombrophiliformis?
Hi Ake,
Did you test IKI (Lugol) on asci apex ? This would give an essential character to a Hymenoscyphus possibility and would reject - or not - an Ombrophila species , which I suspect.
Amitié
Michel
Did you test IKI (Lugol) on asci apex ? This would give an essential character to a Hymenoscyphus possibility and would reject - or not - an Ombrophila species , which I suspect.
Amitié
Michel
Hans-Otto Baral,
26-03-2026 16:20
Re : Hymenoscyphus ombrophiliformis?
The spore areclearly scutuloid, so I am sure it is not an Ombrophila. Anyway, IKI reaction and croziers are essential. H. ombrohiliformis occurs on branches or pericarps of Fagus and has croziers. The similar H. syringaecolor, which has spore guttules very similar to this one here on Carex, occurs on Fagus leaves and lacks croziers.
Åke Widgren,
27-03-2026 10:18
Re : Hymenoscyphus ombrophiliformis?
Thanks for your comments!
I searched for croziers, and couldn't find any (but they are not always easy to see). Unfortunately I have no IKI, so I couldn´t check the reaction. Anyway - the substrate (Carex) is a bit confusing. There was a discussion about H. ombrophiloformis vs. syingaecolor in Ascomycetes of the world a year ago. Björn Wergen wrote that he was convinced that "there are additional undescribed species, growing on different substrates, all under the name 'H. syringaecolor'." Maybe that´s the problem? Now I will look for croziers a second time, and I´ll see if I can check the IKl reaction as well.
Regards
Åke
I searched for croziers, and couldn't find any (but they are not always easy to see). Unfortunately I have no IKI, so I couldn´t check the reaction. Anyway - the substrate (Carex) is a bit confusing. There was a discussion about H. ombrophiloformis vs. syingaecolor in Ascomycetes of the world a year ago. Björn Wergen wrote that he was convinced that "there are additional undescribed species, growing on different substrates, all under the name 'H. syringaecolor'." Maybe that´s the problem? Now I will look for croziers a second time, and I´ll see if I can check the IKl reaction as well.
Regards
Åke
Hans-Otto Baral,
27-03-2026 11:22
Re : Hymenoscyphus ombrophiliformis?
I d not know on which data Björn relies. H. syringaecolor is very rarely reported in the literature. Did he say which substrates he means to have similar species?