Dianthus carthusianorum

Dianthus carthusianorum, commonly known as Carthusian pink, is a species of Dianthus, native to Europe, from Spain north to Belgium and Poland, and east to Ukraine, occurring in dry, grassy habitats at altitudes of up to 2,500 m (8,200 ft) in mountains. It is a variable herbaceous perennial plant growing to 60 cm (24 in) tall. The leaves are slender, green to slightly glaucous greyish-green, up to 7 cm (2.8 in) long and 5 mm (0.20 in) broad. The flowers are 18–20 mm (0.71–0.79 in) wide, dark pink to purple, occasionally white; they are produced several together in tight flowerhead....read more on Wikipedia.