Rosebay willowherb (Chamerion angustfolium)

A companion of the fir and the spruce, assisting their reproduction, rosebay willowherb lights up the clearings with its purple flowers from June to August. Its flowers develop in bunches at the end of a long stalk which can reach 1.2m in length, giving rise to light seeds with silky hairs, allowing them to be easily carried off by the wind which distributes them onto the northern faces of mountains and beside mountain streams up to 2000m in altitude.