Accès membres

Mot de passe perdu? S'inscrire

10-01-2023 23:54

Lophiostoma or Massarina on Salix?
Marc Detollenaere Marc Detollenaere

Dear Forum,On dead branches of Salix sp, I found s

04-01-2023 14:28

A mollisioid aspect but...
Michel Hairaud Michel Hairaud

Bonjour, I have lately been given a puzzling coll

18-12-2022 11:12

Index to Höhnel's works?
Viktorie Halasu Viktorie Halasu

Hello, is there any index to Höhnel's works (bot

08-01-2023 18:08

Hyaloscypha? On Symphoricarpos albus
Robin Isaksson Robin Isaksson

Hi, Dont know if it is correct genera. Maybe so

07-01-2023 22:54

Hydropisphaera sp. on wood
Thorben Hülsewig

Hi there,last year (22.10.22) i found on a branch

07-01-2023 15:12

Pezicula sepium
Riet van Oosten Riet van Oosten

Hello, Found by Laurens van der Linde on Crataegu

06-01-2023 16:09

Nectriella exigua on Ammophila arenaria?
Marc Detollenaere Marc Detollenaere

Dear Forum,On the leaves of Ammophila arenaria ( n

17-08-2017 20:37

Peziza badiofusca?
Viktorie Halasu Viktorie Halasu

Hello,I found this Peziza 10 days ago, in a mixed

05-01-2023 17:24

Geoglossum
Malcolm Greaves Malcolm Greaves

I was asked to look at this dried Geoglossum speci

04-01-2023 19:57

Asco imparfait sur grande plante de roselière (Impatiens glandulifera?)
Bernard CLESSE Bernard CLESSE

Bonsoir à toutes et tous,J'ai trouvé cet asco im

« < 173 174 175 176 177 > »
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?
  • message #71745
  • message #71745
  • message #71745
  • message #71745
  • message #71745
  • message #71745
  • message #71745
  • message #71745
  • message #71745
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.