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23-05-2026 11:44

Charles Grapinet Charles Grapinet

Hello, I am having trouble identifying this copro

22-05-2026 21:35

Steve Clements

Bonjour, I expected this find on old wood on our

22-05-2026 18:12

Lothar Krieglsteiner Lothar Krieglsteiner

... in moist chamber from Portugal.As the fungus s

22-05-2026 20:08

Ethan Crenson

Hello all,  Yesterday in NYC I was visiting an e

11-01-2022 16:36

Jason Karakehian Jason Karakehian

Hi does anyone have a digital copy of Raitviir A (

20-05-2026 17:47

Margot en Geert Vullings

We found this Mollisia on dead Juncus stems mown l

22-05-2026 14:47

Gernot Friebes

Hi,superficial ascomata collected on bark of a liv

22-05-2026 14:44

Lothar Krieglsteiner Lothar Krieglsteiner

in unripe condition citrine yellow, then soon fadi

22-05-2026 13:29

Gernot Friebes

Hi,I am curious to hear your opinion on this mater

22-05-2026 10:59

Nicolas VAN VOOREN Nicolas VAN VOOREN

Trouvé sur Phragmites, ce que je pense être un L

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--> Rebentischia unicaudata (immature) on Cytisus
William de Jong, 24-02-2021 11:51
Hi,

A few days ago I found Helminthosporium velutinum/genistae (https://waarneming.nl/observation/207729435/) on a dead attached branch of Cytisus scoparius in The Netherlands. Together with this Helminthosporium I found several 8-spored asci: 63,8-76,2 x 14,7-17,3 µm. The spores are narrowed towards one side, with a sept in the middle: 32,2-35,8 x 5,3-5,6 µm. I added some pictures, one in Lugol.
Does anyone have suggestion which species this could be?

Thanks in advance. Regards, William
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William de Jong, 23-01-2022 21:22
Re : Asco with Helminthosporium on Cytisus
Almost a year later ;) Has anyone any idea what this could be?
Martin Bemmann, 24-01-2022 08:57
Martin Bemmann
Re : Strange ascospores with Helminthosporium on Cytisus
Hi William,

how about an unmature Rebentischia unicaudata?

Barr 1980:147 "Ascospores hyaline at first"....

Regards

Martin
Martin Bemmann, 24-01-2022 18:32
Martin Bemmann
Re : Strange ascospores with Helminthosporium on Cytisus
Here is a German collection with many immature spores (collection no. 6):

William de Jong, 24-01-2022 19:16
Re : Strange ascospores with Helminthosporium on Cytisus
That seems to be it!
Thanks a lot Martin!