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15-11-2025 23:22

Hymenoscyphus macroguttatus? on Phytolacca
Mario Filippa

Hello,this is what I think to be Hymenoscyphus mac

14-11-2025 16:26

Small species on Cytisus scoparius
Marian Jagers Marian Jagers

Hello everyone, On dead wood of Cytisus scoparius

15-11-2025 20:25

Cryptosphaeria ligniota?
Riet van Oosten Riet van Oosten

Hello, Found by Laurens van der Linde, Nov. 2025

15-11-2025 09:21

Anamorph on Buxus.
Josep Torres Josep Torres

Hello.An anamorph resembling Capronia is sprouting

14-11-2025 18:31

literature request
Lothar Krieglsteiner Lothar Krieglsteiner

Hello,can somebody provide me with a file of:Rothe

12-11-2025 21:47

sp en restos de poda
ruiz Jose

Hola a todos, me envían esta colección en resto

12-11-2025 09:25

Pseudombrophila on soil
Viktorie Halasu Viktorie Halasu

Hello, I need help with a pale terrestric Pseudom

11-11-2025 20:16

yellow discs on a Quercus robur leaf
Bohan Jia

Hi, lastly I have found these tiny yellow decayin

09-11-2025 13:20

Ascomycete on Rubus.
Josep Torres Josep Torres

Hello.A tiny ascomycete, appearing as erupting gra

08-11-2025 12:10

Phacidium
Elisabeth Stöckli

Bonjour, Trouvé sur tiges mortes de Rubus (ronce

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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 :-)