Hi

I think you should compare with Serpula lacrymans.

Thank you very much!

81

Hi Aleksandra

I think you can make cross section, and determine some characterize to see which group  this fungus

Hi,

These could be either basidiomycetes or ascomycetes fungi. But a microscopic examination is required for confirmation.

Thank you very much!

May be Fusarium, make the slide

103

You are welcome

Hi Aleksandra, the pictures show that the fungus is growing on or very close to some kind of wood. So I would suggest a basidiomycete fungis.