Silene uniflora; contrary to its English name, the sea campion can be found almost anywhere on Iceland and is a characteristic plant of the highland deserts. It prefers sandy and gravel-rich soils. The inflated calyx is makes this plant easily recognizable. It is member of the pink family (Caryophyllaceae). I have seen two distinct flower colors: i.e. calyx coloring. Most plants have inflated calyxes that are purpelish because the veins of the calyx-leaves are purple colored. However I have also seen plants with calyx's with yellowish-green colors without a special vein color.