Low-growing herbs widely distributed in temperate and arctic northern hemisphere,sandworts,distinguished from members of the genus Arenaria mainly by having 4- rather than 5-petaled flowers.

• 一个矮生草本属，广泛分布于北半球的北温带地区和北极区，鹅不食，主要以其4-瓣而非5-瓣花与蚤缀属植物相区别。