12-06-2026 14:50
François Freléchoux
Bonjour, Voici la brève description d'une Mollis
10-06-2026 21:16
François Freléchoux
Bonsoir,Le dernier du jour, en attendant votre avi
11-06-2026 19:01
William Slosse
Hello all,In an attempt to make a culture of a sus
11-06-2026 19:03
Nicolas VAN VOOREN
Chers membres d'Ascofrance,Le site sera placé en
10-06-2026 23:08
éric ROMERO
Bonjour tous, Je vous propose un Mollisia trouvé
09-06-2026 18:32
Camille MertensSur morceau de roseau immergé 0,5 - 0,7 mm de dia
10-06-2026 12:54
Steve ClementsBonjour encore, Pouvez-vous m'aider, s'il vous pl
10-06-2026 21:07
François Freléchoux
Toutes les tiges de gentianes jaunes de l'an passÃ
10-06-2026 13:41
François Freléchoux
Bonjour à nouveau, Voici une trouvaille d'hier.
Hymenoscyphus sulphuratus? On spruce needles
Edvin Johannesen,
29-09-2021 15:26
These yellow (more so as fresh than photos indicate) apothecia were found on spruce needles in the sand of a dried-out creek, Northern Norway. Asci IKI-, very long (up to 200 micr.) and narrow (~7-8 micr.), 8-spored, uniseriate. Presence of croziers uncertain. Spores quite consistently 12x6 (up to 13x7) micr., one-celled, with indistinct granular content. Paraphyses filiform, 2-3 micr. broad, some with vacuolar bodies (?), making them appear septate. Ectal excipulum mostly consisting of (sub-)globose cells, medullary/ectal excipulum more complex (prismatica, maybe).
I have compared with Hymenoscyphus sulphuratus as neotypified by Van Vooren (see attached article) and find a pretty good match. Objections and alternative suggestions welcomed.
AscomyceteOrg-06-05-154-157-1-Hymenoscyphus-sulphuratus-0001.pdf
Edvin Johannesen,
29-09-2021 15:38
Re : Hymenoscyphus sulphuratus? On spruce needles
I now noticed that H. suphuratus is described as having bi-seriate spores (in dead asci?), whereas this (relatively fresh) specimen has consistently uni-seriate spores. I don't how significant this is, or if this changes in live vs. dead asci.
Nicolas VAN VOOREN,
29-09-2021 15:50
Re : Hymenoscyphus sulphuratus? On spruce needles
You can also take a look to this paper:
https://www.researchgate.net/publication/270159704_Hymenoscyphus_sulphuratus_un_petit_discomycete_inopercule_meconnu_Helotiales_Helotiaceae
https://www.researchgate.net/publication/270159704_Hymenoscyphus_sulphuratus_un_petit_discomycete_inopercule_meconnu_Helotiales_Helotiaceae
Hans-Otto Baral,
29-09-2021 15:59
Re : Hymenoscyphus sulphuratus? On spruce needles
Your figured ascus is dead, I remember subbiseriate in living asci.
Edvin Johannesen,
29-09-2021 16:20
Re : Hymenoscyphus sulphuratus? On spruce needles
Thanks a lot. I was aware of this paper - now I have downloaded it. I see that the depicted spores/asci in this paper aren't truly biseriate. Are they what you call subbiseriate, Zotto? And regarding dead ascus, I assume that refers to my picture.
Not sure if your replies meant an endorsement to H. sulphuratus or if more studies are needed.
PS. The specimen was "fresh" in the sense "not dried", when I did the microscopy, but had been in the fridge in a small container for about a week and a half. Now it is dried, so fuether studies will have to be done on dried material.
Hans-Otto Baral,
29-09-2021 16:44
Re : Hymenoscyphus sulphuratus? On spruce needles
I would even say biseriate, with the addition obliquely, which is the case in most Helotiales. See my HB 5592 or 813. Nicolas' picture could show dead asci too. The identity sounds certain,
Edvin Johannesen,
29-09-2021 19:20
Re : Hymenoscyphus sulphuratus? On spruce needles
Under what name in your folder? When searching "sulphuratus", I don't get a hit.
Hans-Otto Baral,
29-09-2021 21:56
Re : Hymenoscyphus sulphuratus? On spruce needles
It is in the Cudoniella folder.
Edvin Johannesen,
29-09-2021 23:35
Re : Hymenoscyphus sulphuratus? On spruce needles
Got it. Looks quite convincing to me :)