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17-01-2026 19:35

Cosmospora aurantiicola: Gibt es dazu Literatur ?
Arnold Büschlen

Hallo, ich suche zu Cosmospora aurantiicola Lite

17-01-2026 10:41

Pulvinula
Blasco Rafael Blasco Rafael

Hola, he descubierto que he creado una Pulvinula t

08-12-2025 17:37

possibly related to Melanomma - on Abies
Lothar Krieglsteiner Lothar Krieglsteiner

20.6.25, on branch of Abies infected and thickened

16-01-2026 00:45

Hyphodiscus (?) on hardwood, hemiamyloid, staining reddish-orange
Ethan Crenson

Hi all, On decorticated hardwood from a New York

16-01-2026 11:20

Una para ID
Castillo Joseba Castillo Joseba

Me mandan el material seco de Galicia (España) 

10-01-2026 20:00

Lichenicolous fungus on Protoparmeliopsis muralis
Tom Schrier

Hi all,We found picnidia on Protoparmeliopsis mur

13-01-2026 07:28

Chlorociboria glauca on indet. decorticate hardwood log - 303627368
Danny Newman Danny Newman

Chlorociboria glauca on indet. decorticate logThe

15-01-2026 15:55

pyrenomycete on Quercus
Lothar Krieglsteiner Lothar Krieglsteiner

this one is especially interesting for me because

15-01-2026 10:35

Hyphomycete ?
Johan Boonefaes Johan Boonefaes

Last week I found this fungus, possibly a hyphomyc

13-01-2026 08:43

Tricladium varicosporioides on indet. decorticate stick - 303997395
Danny Newman Danny Newman

Tricladium varicosporioides on indet. decorticate

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Bionectriaceae (?) on stems of Rosa rugosa, March 2020, Denmark
Thomas Læssøe, 07-03-2020 15:22
spores mostly 11x 7 µm, but very variable, and asci not always with 8 spores. Slightly roughened walls, non-constricted, 2-celled, hyaline. KOH negative (or slightly pinkish under LM). Surface white bristly hairy; hairs widened at the tips. Outer exc. of very thick-walled,clavate cells. Apparently gathered on some stroma -nothing underneath in section

see images on the Danish atlas project

https://svampe.databasen.org/observations/10085848

Christian Lechat, 07-03-2020 15:54
Christian Lechat
Re : Bionectriaceae (?) on stems of Rosa rugosa, March 2020, Denmark
Hi Thomas,
it could be a species of Fusicolla but you should check it the ascomata change of colour in lactic acid, which become bright yellow to orange in this reagent.

If there is no change in colour, maybe you should consider the genus Nectriopsis.

I attach two articles with illustrations about Fusicolla.

All the best,
Christian
Thomas Læssøe, 07-03-2020 16:16
Re : Bionectriaceae (?) on stems of Rosa rugosa, March 2020, Denmark
thanks :-)