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02-06-2026 14:33

Nicolas VAN VOOREN Nicolas VAN VOOREN

Hello.I'm searching for a PDF copy of the followin

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Louis DENY

Bonjour forum, Sur feuille de Populus tremula, en

31-05-2026 22:53

éric ROMERO éric ROMERO

Bonjour tous, Je n'ai pas d'idée pour cette esp

28-07-2011 18:31

Alex Akulov Alex Akulov

Dear FriendsToday I made the pdf file of Velenovsk

11-09-2025 16:57

Jason Karakehian Jason Karakehian

Our revision of Marthamycetales (Leotiomycetes) is

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Miguel Ãngel Ribes Miguel Ángel Ribes

Hi againExactly at the same place than my previous

25-12-2019 17:54

Valencia Lopez Francisco Javier

Hola a todos/asEstas supuestas pezizas estaban en

12-07-2015 00:05

Nedim Jukic Nedim Jukic

This one from the same locality as the previous on

28-08-2014 18:36

Rubén Martínez-Gil Rubén Martínez-Gil

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Philippe PELLICIER

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Hymenoscyphus-like species
Nicolas VAN VOOREN, 25-08-2011 15:57
Nicolas VAN VOORENBonjour / Hello.
Voici un Helotiale qui me pose problème. Espèce récoltée parmi des mousses et des hépatiques, au bord d'un ruisseau, mais non greffée aux mousses, plutôt aux petits débris (aiguilles d'épicéa, feuille morte de Vaccinium...)
Apothécies Ø 2-4 mm
Excipulum ectal de textura primastica. Asques 95-105 x 8-10 µm, sans crochet (difficile d'être affirmatif à 100%), à 8 sp. bisériées (pars spor. 40-50 µm), à anneau apical IKI+ (bb), type Hymenoscyphus. Paraphyses sans vacuole, à sommet parfois difforme. Spores ciborioïdes, 12,2-15 (19) x 4-5,5 (6) µm, parfois avec 1 cloison (y compris dans l'asque), avec de rares guttules (1-4).

Une idée ?

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English description
Ectal excipulum of textura primastica. Asci 95-105 x 8-10 µm, without crozier (not sure at 100%), with 8 biseriate spores (pars spor. 40-50 µm), apical ring IKI+ (bb), Hymenoscyphus type. Paraphyses without VBs, with some twisted apex. Spores ciborioid, 12.2-15 (19) x 4-5.5 (6) µm, sometimes 2-celled (including in ascus), with rare LBs (1-4).
  • message #16157
Hans-Otto Baral, 25-08-2011 18:35
Hans-Otto Baral
Re : Hymenoscyphus-like species
Did you compare my Hymenoscyphus pezoloma = Pezoloma herbicola nom. prov.?

Needs to have croziers and is more white, but otherwise quite similar. Also quite unspecific to the substrate.

Zotto
Nicolas VAN VOOREN, 25-08-2011 19:28
Nicolas VAN VOOREN
Re : Hymenoscyphus-like species
Indeed, it seems that your H. pezoloma is close to this species. My apos were all yellow and stipitate, and the content of the spores seems to be a bit different...
In my previous description, I ommited to mention that the cells of excipulum do not react in Lugol reagent.
Hans-Otto Baral, 25-08-2011 21:07
Hans-Otto Baral
Re : Hymenoscyphus-like species
Did you tgry with Congo red to be sue about the croziers? If the fungus is still fresh and in bon etat, a section should give a clear result.

The apical ring is a bit too narrow for this Pezoloma species. Looks more like a true Hymenoscyphus. But without VBs is strange.

Zotto
Nicolas VAN VOOREN, 25-08-2011 21:40
Nicolas VAN VOOREN
Re : Hymenoscyphus-like species
I will check again for the croziers.
Nicolas VAN VOOREN, 27-08-2011 17:42
Nicolas VAN VOOREN
Re : Hymenoscyphus-like species
I confirm that asci do not have any crozier (see pictures)
  • message #16203
  • message #16203