[Wikipedia] Eurasia Native, Weed Status, Description: Silene noctiflora is a species of flowering plant in the family Caryophyllaceae known by the common names night-flowering catchfly,[1] nightflowering silene[2] and clammy cockle. It is native to Eurasia, but it is known on other continents as an introduced species and sometimes a weed. In North America, it is a common weed of grain crops in the Canadian prairie provinces and in much of the United States.[3] It grows in fields and in other disturbed habitat. As night falls the flowers of the night-flowering catchfly open and release a strong fragrance which attracts night-flying moths which feed on the copious nectar and pollinate the plant.[5] (link added by Mary Ann Machi)