alpine, american dog or labrador violet (viola labradorica) 'purpurea' with purple flowers

american dog labrador violet lowgrowing purpurea viola labradorica adunca alpine attractive bloom blooming blue botanic botanical botany close closeup conspersa cottage cover dainty early flora floral flower flowering flowers foliage garden gardening ground growing growth heartshaped lavender leaves macro nature ornamental outdoors park petals plant purple semievergreen small spring springtime stalks summer vegetation woodland 'purpurea' heart-shaped