A small annual mouse-ear of sandy ground such as sand-dunes. The upper bracts are almost entirely translucent and papery. Flowers have five sepals, petals, stamens and styles (contrast the similar dark-green mouse-ear, C. diffusum).
All names: Cerastium semidecandrum L.
NBN Atlas mapping: Species account : NBN Atlas UK Species Observations database
iNaturalist: Species account : iNaturalist World Species Observations database