Information on Sea Mouse-ear

Common Name: Sea Mouse-ear
Scientific Name: Cerastium diffusum
Irish Name: Cluas luchóige mhara
Family Group: Caryophyllaceae
Distribution: View Map (Courtesy of the BSBI)
Flowering Period


Click for list of all flowering by month
Sea Mouse-ear could sometimes be confused with:

Mouse-ear, Common, Mouse-ear, Sticky,

Almost prostrate and rarely growing more than 25 cm high, Sea Mouse-ear is a very sticky little plant which tends to grow more by the sea than inland. Found on sandy ground, old coastal walls and grassland, it bears small white flowers (3–6 mm) which usually have four, notched petals and sepals, with four stamens and styles. These bloom from May to August. It has ovate green leaves and bracts which are without transparent margins, is a native plant and belongs to the Caryophyllaceae family.

I first recorded and photographed this plant at Kinvara, County Galway in 2010.

If you are satisfied you have correctly identified this plant, please submit your sighting to the National Biodiversity Data Centre

Mouse-ear, Sea
Mouse-ear, Sea

Because Sea Mouse-ear is covered with sticky hairs, all sorts of debris, such as grains of sand and the hairy tufts of seedheads, had attached themselves to the plants I found.