It was peculiarly warm day. That the Pink sorrel flowers are blooming in the Buttercup oxalis was found three days ago. So it not was blooming Pink sorrel by the influence of warmth of today. Although it is fun there are flowers, I'm worried about effect on the native species.
I thought to be similar to flowersof Winter Daphne, it was the same Thymelaeaceae plant. This is the Oriental paperbush the bark is the raw material of paper, this plant is called Red flower Oriental paperbush (Akabana-mitsumata) because the red flowers not be yellow.