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 elevations of up to 2500 m in mountains.

It is a variable herbaceous perennial plant growing to 60 cm tall. The leaves are slender, up to 7 cm long and 5 mm broad. The flowers are 18 - 20 mm wide, dark pink to purple, occasionally white; they are produced several together in tight flowerhead.