Silene uniflora

Silene uniflora is a species of flowering plant in the family Caryophyllaceae known by the common name sea campion.

Description
Silene uniflora is a herbaceous perennial plant, similar in appearance to the bladder campion (Silene vulgaris) but with flowers generally solitary. It is generally prostrate, mat-forming. The leaves are linear, grey-green glabrous and glaucous in opposite and decussate pairs, the flowers white with five deeply notched petals, the 5 sepals fused and inflated to form a bladder.

Distribution
Silene uniflora is a maritime species, almost confined to Iceland, the Atlantic and Baltic Sea coasts of western Europe, Madeira and the Azores. In Britain it also occurs rarely in the mountains.

References

uniflora