Sagina procumbens; The procumbent pearlwort is a rather small plant with small flowers. These flowers are usually green because the white petals are nearly always missing leaving the sepals as the flower color-defining organs. The flowers develop on trailing stems sprouting from a central rosette. The plant usually grows on damp gravel-rich soils and is wide-spread over Iceland.
It is a member of the Pink family (Caryophyllaceae). The Icelandic name of this species is Skammkrækill.