18-03-2026 18:42
Gonzalez Garcia MartaI have collected some lyre-shaped apothecia on the
18-03-2026 17:22
Katarina PastircakovaHi there,I'm looking for the following literature:
27-11-2025 15:41
Thomas LæssøeSpores brownish, typically 4-celled; 26.8 x 2.4;
18-03-2026 13:09
Khomenko Igor
I recently examined Celtis occidentalis branches
18-03-2026 11:52
Thomas Læssøehttps://svampe.databasen.org/observations/10493688
11-03-2026 17:36
Michel Hairaud
Bonjour, Je cherche des indices pour cette réc
17-03-2026 10:40
Martine Vandeplanque
Bonjour à tous.Chaque année en mars ou avril, il
17-03-2026 19:41
Bernard CLESSE
Bonsoir à toutes et tous,Pourriez-vous m'aider à
12-03-2026 19:44
Enrique Rubio
Hi to everybody.Can you give me any suggestions ab
17-03-2026 10:09
François Freléchoux
Bonjour, Voici la description rapide d'un petit d
Hello forum,I have an interesting discomycete found on bark of (living?) Prunus padus. First I thought Heterosphaeria cf patella, but:
- medulla is not gelified
- paraphyses apex looks different, not so enlarged, no VBs
- there's a gel layer on receptacle surface
- different spore size, IKI+bb asci.
- excipulum turns dark brown-olive in KOH
Some characters remind me on Mollisia (KOH reaction, white hymenium when drying), but others on Heterosphaeria. Growing in lowland, former wetland forest (mostly Fraxinus and Populus spp.), Dermea padi and Biscogniauxia granmoi were found nearby. Apothecia 0,5-1 mm wide.
Thank you in advance for any advice.
Viktorie
Great, I cannot remember such a fungus. Did you study the anamorph also? How sure does this belong to the apothecia in your opinion?
Zotto
thank you very much. I feared I'll get answer like this since I didn't find anything similar in your folder. : )
I didn't study it yet in detail, I'll try to do that today evening and test the KOH as well. But here's the upper part of one conidioma (pyknid? don't know correct term) where I measured the conidia and it has the same gel layer. I don't know how common this feature is among inoperculates.
I wanted to test it with CRB, but still have some problems with this reagent - either it's too concentrated (and staind everything violet) or I get no reaction at all. Could you please advise me the correct way to apply it? I tried it with the medium becoming only light blue, which avoided the overstaining, but never got those beautiful turquise VBs (in other species).
Viktorie
Not sure what you want, maybe staining of the gel layer? That should work, usually.
Nous pensons avoir trouvé la même espèce que celle présentée par Viktorie dans ce forum :
Trouvé sur les branches de Prunus padus, apothécies de 0,5 - 1 mm de diamètre, isolé à grégaire, hyménium gris.
Ascospores : 8,5 - 11 x 2,25 - 2,75 µm, hyalines, conidies 5,75 - 7,5 x 1,5 - 2,25µm, asques 52 - 70 x 7 - 8 µm, avec crochets, IKI+, paraphyses légèrement élargies à l'extrémité.
Merci pour vos commentaires.
Elisabeth
great, it's indeed the same fungus. Would you please send me the collection data? Meanwhile I identified it as Glutinium laevatum, a species described several times in anamorph stage.
edit: was it on Padus avium, or P. serotina?
If you ever find something similar on Salix (maybe shrub Salix?), we would be much interested in studying and sequencing it. (There's a sister species, perhaps less common, G. palinum. I have Petrak's locality nearby, but haven't found it there yet.)
Viktorie
Je t'envoie les données de la récolten par courriel.
Elisabeth