dryas octopetala eightpetal mountain avens flowering plant, bright white dryad in bloom with green leaves on stones

dryad dryas octopetale eightpetal mountainavens mountains avens white arctic alpine color bright yellow small green leaf foliage stem evergreen subshrub flower plant eight petals season summer botany botanic botanical flora floral nature natural world bud bloom blooming blossom blossoming daylight macro closeup detail wild wildflower sunny rosaceae stone rock