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Anamorf on decaying leaves of Euonymus japonicus 'Microphyllus'
Pol Debaenst, 21-12-2025 21:32
Hello,

Garden, Burgweg 19, Veurne, Belgium
On 10/12/2025 I found anamorf fungi on decaying leaves of Euonymus japonicus 'Microphyllus'
- Conidiomata black, pustular, on both sides of the leaf but mainly on the underside, 0,2-0,4 mm Ø; few specimen were sparsely 'hairy' (see photo's 5 and 6)
- Conidia brown, ellipsoid to ovoid, 1-septate, rarely 2-septate, with a (slightly) thick septum, 17,5-24,5(-28) x 9,1-11,2 µm


Thanks in advance for determination.

  • message #84138
  • message #84138
  • message #84138
  • message #84138
  • message #84138
  • message #84138
François Bartholomeeusen, 21-12-2025 22:15
Re : Anamorf on decaying leaves of Euonymus japonicus 'Microphyllus'
Good evening Pol,

Maybe compare to Cladosporium macrocarpum?


Regards,


François

Alain GARDIENNET, 22-12-2025 04:22
Alain GARDIENNET
Re : Anamorf on decaying leaves of Euonymus japonicus 'Microphyllus'
Hi,
Cladosporium is an hyphomycete.
Here is a pycnidial morph, closed to Diplodia (s.l.) 
Albert Ibars, 23-12-2025 01:07
Albert Ibars
Re : Anamorf on decaying leaves of Euonymus japonicus 'Microphyllus'
Hello,

It looks like a Dothiorella species (Botryosphaeriaceae), most likely Dothiorella sarmentorum, which is documented on Euonymus.


Regards,

Albert

Pol Debaenst, 28-12-2025 12:29
Re : Anamorf on decaying leaves of Euonymus japonicus 'Microphyllus'
Hi Alberd,

Dotiorella sarmentorum fits perfectly with my found.
Thank you very much.

Kind regards,
pol