Wood Anemone Anemone nemorosa
Anemone nemorosa is an early-spring flowering plant in the Genus Anemone in the family Ranunculaceae. Common names include wood anemone, windflower, European thimbleweed and smell fox. They are perennial herbaceous plants, growing in early spring from 5 to 15 cm tall. Plants start blooming soon after the foliage emerges from the ground, with the leaves parted into three segments and the flowers produced in the middle of the foliage on short stems above the foliage with one flower per stem. The plants grow from swollen tuber like, more or less vertical underground stems formed on the rhizomes. The plants die back down to the root-like rhizomes by mid summer (summer dormant). The rhizomes spread just below the soil surface, forming long spreading clumps that grow quickly, contributing to its rapid spread in woodland conditions, where they often carpet large areas.
from Wikipedia (dutch name: Bos-Anemoon)