First: thanks for your help! And yes, Virginia, you are of help!
I looked (gain ) in both species, but they are not (to different petals, colour, lining on petals and leaves). The I found an article which describes M. sylvestris as creeping... so I stick to that. Not that I am fully convinced so it will be Malva cf. sylvestris. Cf. meaning "i think it could be..."
By the way, this is the article if you are curious:
https://cronodon.com/NatureTec...
and a few acorns for you both, although you, as i, am probably drowning in them.
