Greater bird’s Foot trefoil
Lotus pedunculatus, the big trefoil, greater bird’s-foot-trefoil or marsh bird’s-foot trefoil, is a member of the pea family. It is a herbaceous perennial growing throughout Europe in damp, open locations.
Photo: By André Karwath aka Aka – Own work, CC BY-SA 2.5, https://commons.wikimedia.org/w/index.php?curid=231447