Galeopsis sp.
Found in wood with sandy soil...
Thank you for ID suggestion Marta :)
I don't think the leaves match Galeopsis angustifolia...
Thank you for ID suggestion Daniele :)
I am afraid I don't think it's a Lamium, it wasn't very tall about 12 cm, and it didn't make me think of Lamium, I only took the photo because I had never seen it before..
Lat: 50.91, Long: 14.23
Spotted on Jul 22, 2012
Submitted on Aug 5, 2012