About Petrorhagia saxifraga (L.) Link
Petrorhagia saxifraga (L.) Link, commonly called tunic flower, coat flower, tunic saxifrage, pink saxifrage, or simply pink, is a small herbaceous flowering plant in the family Caryophyllaceae. It is native to central and southern Europe, Turkey, the Caucasus, and Iran, and has been introduced to the United States, Canada, Great Britain, the Baltic States, Poland, and Sweden. This is a wiry plant with numerous branching stems, narrow leaves, and solitary flowers that grow at the ends of branches. Its petals range in color from pink to white. It is commonly cultivated in rock gardens and used along planting borders, and has escaped cultivation to grow in lawns, roadsides, shorelines, and other sandy disturbed areas. Originally described as Dianthus saxifragus by Carl Linnaeus in 1753, this species was renamed Petrorhagia saxifraga in 1831. Both the genus name and the species name refer to its natural habitat: rock crevices. Two subspecies of Petrorhagia saxifraga are currently accepted: Petrorhagia saxifraga subsp. gasparrinii (Guss.) Pignatti ex Greuter & Burdet, which occurs in Sicily, and Petrorhagia saxifraga subsp. saxifraga (L.) Link.
