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17-04-2026 19:16

Enrique Rubio Enrique Rubio

Hi to everybodyI would appreciate any assistance r

14-04-2026 05:32

Ethan Crenson

Hi all, A few weeks back a friend pointed out som

17-04-2026 15:14

Bruno Coué Bruno Coué

Bonjour.Récoltes du 16/04/2026, sur feuilles mort

12-04-2026 15:52

Gernot Friebes

Hi,I'm looking for help with this anamorph collect

14-04-2026 21:52

Gernot Friebes

Hi,found on dead leaves of Carex elata. Conidia: 4

16-04-2026 22:09

Buckwheat Pete

Hello, I'd like to ask about this older specimen:

15-04-2026 19:33

Fátima Durán Manzaneque

Hi!! I need help, I found this Ascomycete but I d

14-04-2026 20:31

Gernot Friebes

Hi,can this be Psilachnum lateritioalbum on Phragm

12-04-2026 17:56

Hardware Tony Hardware Tony

Found on dead stems in February earlier this year

12-04-2026 12:22

William Slosse William Slosse

In a dune grassland in Oostduinkerke (Belgium), on

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Unknown beheaded stubble lichen
Erik Van Dijk, 07-02-2022 19:22
I recently found in moisty riparian forest with willows along the Rhine the following lichen/fungus. It appeared like a beheaded stubble lichen. Investigation with the microscpe revealed in the top a collection of spores. 

The spores were 45-50 um by 3-4 um. 

See the following link.
https://waarneming.nl/observation/233387391/

Other observers in the Netherlands have found the same unknown species. See:  
https://waarneming.nl/observation/134021261
https://waarneming.nl/observation/223933166/

Does anyone has any idea?
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Adam Polhorský, 07-02-2022 20:40
Re : Unknown beheaded stubble lichen
I saw similar/same fungus recently, so I think I can help.
Look here https://doi.org/10.1139/b85-051
The best fit for your fungus seems Morrisographium boudieri.
Conidia from my collections often exceeded 50um so I decided for M. ulmi.

I think only M. boudieri is known from Europe, however I'm unsure of boundaries between these 2 species. Here are some pics https://drive.google.com/drive/folders/1a5WOxiTO_-fRC_ZTJqoL_CWG9EQta1Dg?usp=sharing

I saw it on Acer campestre and Cornus mas bark, what could be your substrate?
Erik Van Dijk, 08-02-2022 20:02
Re : Unknown beheaded stubble lichen
Thank you for you response.

It looks indeed rather similar. My substrate was willow. 

The entire genus Morrisographium is until not found in the Netherlands, but these tiny fungus might easily be overlooked.