cluster of white mountain avens flowers

seydisfjordur circumpolar groundcover environment wildflower eightpetal octopetala prostrate mountains evergreen highlands temperate mountain woodland sunlight national rosaceae subshrub altitude cluster flowers iceland blossom creeper species climate natural regions flower nature meadow garden yellow tundra floral emblem alpine arctic petals summer white avens plant petal shrub taiga dwarf dryad dryas eight green flora bloom sunny leaf wild stem rock cold high cool