Geranium cinereum

Geranium cinereum, the ashy cranesbill, is a species of flowering plant in the family Geraniaceae, native to the Pyrenees. Growing to tall and wide, it is a small, deciduous or semi-evergreen perennial usually grown for low ground cover, rockeries or underplanting larger subjects like roses. Leaves are deeply divided and grey-green - whence The Latin specific epithet "cinereum" “ash-grey”. It flowers in summer, with striking black-eyed flowers with black stamens. 
The plant grows in full sunlight, and is hardy down to .
In cultivation in the UK the following cultivars in the Cinereum Group have been given a Royal Horticultural Society Award of Garden Merit:- 