19-02-2026 17:49
Salvador Emilio JoseHola buenas tardes!! Necesito ayuda para la ident
01-03-2026 08:55
Michel Hairaud
Bonjour , Je souhaiterais recevoir cet article :Â
28-02-2026 14:43
Alain GARDIENNET
A new refrence desired :Svanidze, T.V. (1984) Novy
27-02-2026 17:51
Michel Hairaud
Bonjour, Quelqu'un peut il me donner un conseil p
29-11-2024 21:47
Yanick BOULANGERBonjourJ'avais un deuxième échantillon moins mat
27-02-2026 16:17
Mathias Hass
Hi, Found this on Betula, rather fresh fallen twi
Mollisia or Pyrenopeziza Cf. subviridula
Michel Hairaud,
02-11-2023 18:59
Bonsoir, Je présente une récolte qu'il m'est diffficile d'identifier précisément.Â
Apothécies jusqu'à 1,5 mm , relativement groupées. Sur bois de feuillu
KOH -Â
Asques IKI - 4043 x 4-5 , spores bisériées , PS 10-13 µm, 4-5 x 1,5, 2, biguttulées (une guttule à chaque pôle x 0,5 µm)Â
Paraphyses x3-4 µm, à vacuole réfringente homogène, CRB +Â
Ectal globulosa , parois brunes, cellules x 7-10 µm , cellules marginales également avec VacuolesÂ
Beaucoup d'éléments concordent avec le genre Mollisia mais pas d'hyphes d'ancrage observées .Â
En cherchant sur le site de Zotto, on peut trouver une récolte assez semblable dans le dossier de Pyrenopeziza subviridula .Â
Merci pour tout avis Amitiés
Michel
Hans-Otto Baral,
02-11-2023 20:36
Re : Mollisia or Pyrenopeziza Cf. subviridula
Hi Michel
from the photo I thought it is IKI+. Valuable would be to see a dead ascus in IKI to show the apical wall thickening. Also I would like to see the VBs of the paraphyses in water. The strongly refractive globose drops we see in the IKI photo originate from the VBs induced by the IKI ?
I would also consider "Mollisia" caespiticia. VBs actually do occur in Pyrenopeziza, but only weakly refractive.
Zotto
Michel Hairaud,
02-11-2023 20:52
Re : Mollisia or Pyrenopeziza Cf. subviridula
Hi Zotto, thanks for your quickk answer.Â
as I was surprised with the IKI reaction, I made several tests , all negative.Â
I was surprised to discover the placement of these species (caespiticia, subviridula) in Pyrenopeziza .Â
I join a pic of the hymenium in water , paraphyses VBs can also be seen here.Â
I also considered M. caespiticia. I have collections of that species , with spores slightly longer and macro colors with other tinges. Also IKI négativeÂ
Another complex to be clarified ?Â
Michel
as I was surprised with the IKI reaction, I made several tests , all negative.Â
I was surprised to discover the placement of these species (caespiticia, subviridula) in Pyrenopeziza .Â
I join a pic of the hymenium in water , paraphyses VBs can also be seen here.Â
I also considered M. caespiticia. I have collections of that species , with spores slightly longer and macro colors with other tinges. Also IKI négativeÂ
Another complex to be clarified ?Â
Michel
Hans-Otto Baral,
02-11-2023 21:30
Re : Mollisia or Pyrenopeziza Cf. subviridula
M. caespiticia tends to have slightly allantoid spores and can be confused with Calycina vulgaris. A sequence of M. caespiticia in GB actually falls in Calycina, while others belong in Pyrenopeziza s.l. The VBs are not strikin here, I would say low-refractive, but I do not see them clearly.
Michel Hairaud,
02-11-2023 21:57
Re : Mollisia or Pyrenopeziza Cf. subviridula
Rather lower refractive than in typical Mollisia species, yes. Michel
Hans-Otto Baral,
04-11-2023 19:40
Re : Mollisia or Pyrenopeziza Cf. subviridula
I placed your fungus in my caespiticia folder because viridula s.l. has much larger spores. Also M. caespiticia is often longer, but some are similar as yours. E.g. I see the same IKI-induced refractive guttules in the paraphyses in most docus by Ingo Wagner, which make up the majority of docus in my folder "caespiticia 4.5-8.5 x 1.5-2 IKI-"
.
Michel Hairaud,
05-11-2023 10:00
Re : Mollisia or Pyrenopeziza Cf. subviridula
ok. Michel