Cuckooflower (Cardamine pratensis)

Cuckooflower (Cardamine pratensis)

Observation - Cuckooflower (Cardamine pratensis) - UK and Ireland. Description: Can anyone identify this one for me, please? I've tried, and failed, to key it out in Rose. Leaves approx 1cm, oval, coarsely hairy, reddish tinge especially on edges. Stems coarsely hairy, squarish. Found in an an area of rough grass. Edit: Changed to

Can anyone identify this one for me, please? I've tried, and failed, to key it out in Rose. Leaves approx 1cm, oval, coarsely hairy, reddish tinge especially on edges. Stems coarsely hairy, squarish.
Found in an an area of rough grass.
Edit: Changed to match Tim's ID. Many thanks.