Only found in wet acidic ground, ditches and soggy places, this is a very pretty little annual or perennial wildflower. Its flowers (15-18mm across) have 5, well-separated white petals which become greeny-white towards the centre of the flower where they surround bright yellow stamens. The petals are twice as long as the sepals. They bloom from May to August. The leaves are fleshy and divided, not deeply, with the lobes widest above the base. This is a native plant and it belongs to the family Ranunculaceae.
I first identified this wildflower in 2008 by the river at Trooperstown, Co Wicklow and I photographed it on that occasion.
If you are satisfied you have correctly identified this plant, please submit your sighting to the National Biodiversity Data Centre