At the beginning of April every year, many flowers of Fringed Iris (flowers of Shaga in Japanese) bloom under the trees in front of the garden of my house.
The white flowers with a little purple and yellow spot on its petal.
It is the flower which may be found in relatively wet grassland on hillside, or at the edge of open forest (like the place under the trees).
It has light green, sword-shaped leaves
Fringed Iris is a native of Japan and China.
It is evergreen and perennial plant.