This is an early flowering plant and is also very easy to overlook, the flowers being quite tiny. From February to June it can be found on dry banks, and bare, gravelly places. It's a very small annual plant, only reaching about 20cm high, and it bears really small white flowers (3-6mm) each having four deeply cleft petals. They are in loose racemes on stems which arise from the centre of a basal rosette. The leaves are lanceolate and slightly toothed. The seeds are held in oval flattened pods. This is a native plant and belongs to the family Brassicaceae.
I first recorded this plant in Gibletstown, Co Wexford in March 2009 at which time I also photographed it.
If you are satisfied you have correctly identified this plant, please submit your sighting to the National Biodiversity Data Centre