25-04-2025 17:24
Stefan BlaserHi everybody, This collection was collected by JÃ
10-02-2026 17:42
Bernard CLESSE
Bonjour à toutes et tous,Pourriez-vous me donner
10-02-2026 18:54
Erik Van DijkDoes anyone has an idea what fungus species this m
09-02-2026 20:10
Lothar Krieglsteiner
The first 6 tables show surely one species with 2
09-02-2026 14:46
Anna KlosGoedemiddag, Op donderdag 5 februari vonden we ti
02-02-2026 21:46
Margot en Geert VullingsOn a barkless poplar branch, we found hairy discs
07-02-2026 20:30
Robin Isaksson
Hi!Anyone that have this one and can sen it to me?
25-01-2026 23:23
Tomaz Vucko
Hello! I found this species that resembles Delitsc
Eutypa ?
Petra Eimann,
29-12-2019 15:54
Hello together, need help. Found 21.12.2019 in a mixed deciduous forest. Growing place was a branch of Sambucus nigra. We think it might be a Eutypa but not sure. Average spore size 4.97 x 1.47 Q=3.42, IKI Reaction not sure, if then little. Any ideas what it might be?
Jacques Fournier,
29-12-2019 18:28
Re : Eutypa ?
Dear Petra,
the identification of Diatrypaceae is most often challenging and requires the accurate observation of several characters, not only ascospores.
A common species on Sambucus is Peroneutypa scoparia, and ascospore dimensions fit fairly well. However the ascus shape on your photos is not typical for this species.
You need information on the ostioles and stromatal configuration. For the latter purpose a vertical section as you did would hav been much more informative if you had used a sharp razor blade. It is important to assess whether ascomata are widespread in a common stroma with separately emergent ostioles (Eutypa or Diatrype) or in small groups with convergent ostioles (Eutypella or Peroneutypa)
The apical ring of P. scoparia is relatively conspicuous for the genus and must be observed in Melzer's reagent after a 15 s pre-treatment in 3% KOH.
If you encounter problems with the vocabulary and the delimitation of genera, I suggest you to consult Rappaz' article (1987).-Taxonomie et nomenclature des Diatrypacées à asques octosporés. Mycologia Helvetica vol 2, n° 3, p. 285-648.
Good luck,
Jacques
Petra Eimann,
30-12-2019 00:22
Re : Eutypa ?
thank you very much Jacques, we will try again. Petra