So many mushrooms under my oak tree :))

I put "types of wild mushroom" into search, found lots of pages, you mgith find one that's the best for you, but how about htis for starters
http://www.mushroomexpert.com/

Thank you very much, Fran. Will have a look, although I would rely on real living expert. Devil is in detail, you know.

well, if you search for "images" you might find one that looks exactly like the ones in your pic, and then go to the sight to find out what it's called. would a local musem or college have a botany section?

HI Katerina. I believe your fungus is Paxillus involutus . Very common at this time of year.Look it up under this name &see if it fits the description. Feverfew

Thank you very much, Feverfew. You are absolutely right, and I appreciate your comment so much. Thank you. I found that trees benefit from the symbiosis as the fungus reduces their intake of heavy metals and increases resistance to pathogens such as Fusarium oxysporum. To me it sounds sarcastic what I read, that "Previously considered edible and eaten widely in Eastern and Central Europe, it has since been found to be dangerously poisonous, responsible for the death of German mycologist Julius Schäffer in 1944"
Sounds like we were from Borgia lineage :)))

Is it your hobby or are you recreational mushroom picker?