22-04-2026 01:06
Richard VALERI
Bonjour à tous.Je vous présente cette Nectria s.
21-04-2026 22:14
Margot en Geert VullingsThis cup fungus was found on April 10, 2026, on lo
21-04-2026 13:36
Gernot FriebesHi,I am out of ideas for this one. I collected Sal
21-04-2026 13:19
Gernot FriebesHi,this Lophodermium on Typha has ascospores measu
21-04-2026 13:05
Gernot FriebesHi,this hyphomycete feels familiar but I was not a
20-04-2026 22:00
Malcolm Greaves
These pale yellow, hairy ascos were growing on cul
19-04-2026 21:23
Steve ClementsBonjour, I found this anamorphic fungus on old pl
19-04-2026 20:46
Steve Clements1 mm diameter approx spherical conidiophores on pl
12-04-2026 17:56
Hardware Tony
Found on dead stems in February earlier this year
Thyridaria sp.
Andgelo Mombert,
15-09-2020 17:27
Bonjour,
Sur branche morte décortiquée de Berberis vulgaris en montagne (Valais, Suisse).
Ascospores : 19,5-25 x 6-9 µm, en moyenne 22 x 7 µm, brunes, à 3(4) cloisons, lisses.
Asques : cylindriques, bituniqués, contenant huit ascospores unisériées ou bisériées.
Pourrait-il s'agir de Thyridaria triseptata ?
Merci d'avance pour votre aide !
Andgelo
Gernot Friebes,
11-03-2026 13:38
Re : Thyridaria sp.
Dear Andgelo,
I likely found the same species, also on Berberis vulgaris. Ascospores: approx. 21.2-24.3 x 6.5-8.6 µm, apparently always 3-septate.
I would put this in the vicinity of Lophiostoma quadrinucleatum. The ascospore size of our collections falls between L. quadrinucleatum and L. caespitosum. Interestingly, Holm & Holm mention collections from Berberis deviating from L. quadrinucleatum, but I have not seen the additional septa that they describe, and the ascospore length they give is still on the larger side.
So, my best guess would be that this is a distinct (undescribed?) species from the L. quadrinucleatum complex.
Best wishes,
Gernot
I likely found the same species, also on Berberis vulgaris. Ascospores: approx. 21.2-24.3 x 6.5-8.6 µm, apparently always 3-septate.
I would put this in the vicinity of Lophiostoma quadrinucleatum. The ascospore size of our collections falls between L. quadrinucleatum and L. caespitosum. Interestingly, Holm & Holm mention collections from Berberis deviating from L. quadrinucleatum, but I have not seen the additional septa that they describe, and the ascospore length they give is still on the larger side.
So, my best guess would be that this is a distinct (undescribed?) species from the L. quadrinucleatum complex.
Best wishes,
Gernot
