I found this plant in a city park in Germany. The leaves were about 20cm of height; the smell of the squeezed leaves was a bit like carrots. The stems were edged. So I guess it was Aegopodium podagraria (aka ground elder), but I'm not sure about it.
1 Answer
A man, collecting herbs, confirmed my suggestion about Aegopodium podagraria. Together with what I read about this plant, I can set my question as being answered with Yes.