Carex limosa; The Common Bog-sedge is very similar to the Alpine Bog-sedge. The Common Bog-sedge is generally a taller plant and has more female flowers in the female spikes. However, these differences are difficult to use for identification. More easy is the color of the of the bracts of the female flowers. They are brown in the Common Bog-sedge (C. limosa) and very dark/black with a distinct white midrib in the Mountain Bog-sedge (C. rariflora). It should be noted that on Iceland the Alpine Bog-sedge is more common than the Common Bog-sedge! The Common Bog-sedge grows only in lowland wetlands.
The Common Bog-sedge (C. limosa) is a member of the sedge family (Cyperaceae). The Icelandic name of this species is Flóastör.