Description: 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.

Distribution Map from NBN: Cerastium semidecandrum at National Biodiversity Network mapping facility, data for UK.

iNaturalist: Cerastium semidecandrum at iNaturalist World Species Observations database.