Ranunculus glacialis; The Glacier Buttercup is typically a mountain plant growing on higher altitudes (on Iceland above 600m). The flowers are large, much larger than other similar mountain plants. The flowers (corolla) are white to reddish with a green heart (carpels). Under the white corolla the calyx is downy with red hairs.
It is a member of the buttercup family (Ranunculaceae). The Icelandic name of this species is Jöklasóley.