Sagina, Sp. Pl. 1: 128. 1753 sec. Bittrich (1993c)
- =Spergella, Handb. Gewächsk., ed. 2, 1: 65. 1827 syn. sec. Bittrich (1993c)
A genus of about 30 species, most diverse in north temperate and arctic areas with a few taxa found on some tropical mountains. Sampling shows Sagina to be monophyletic although infrageneric relationships have not been studied.