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01-04-2025 23:18

Yanick BOULANGER

BonsoirRécolté par un ami sur dans un tas de bra

29-03-2025 09:08

Martine  Vandeplanque Martine Vandeplanque

Bonjour.J’ai essayé d’étudier un Daldinia.Qu

30-03-2025 10:24

Gonzalez Garcia Marta

Good morning, I would like to know the opinion of

01-04-2025 10:35

Yanick BOULANGER

BonjourSur bois très pourriApothécie 0,2 - 0,5 m

31-03-2025 17:01

akcay mustafa emre

Hello everyone, My name is Mustafa Emre Akçay, a

30-03-2025 12:41

Castillo Joseba Castillo Joseba

Me mandan el material seco de Galicia (España), r

24-03-2025 21:26

éric ROMERO éric ROMERO

Bonjour, J'ai besoin d'une confirmation ou infirm

29-03-2025 21:13

Tomaz Vucko Tomaz Vucko

Hello! I found this Cistella on old stem of Impa

29-03-2025 06:21

Francois Guay Francois Guay

Hi! I found this interesting tiny ascomycete on i

29-03-2025 05:45

Sebastien Basso

Hello, I'm conducting a mycological inventory in

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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